PANASONIC CS-E18JD3EA (01) PDF Document

Electrical work must be installed or serviced by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit for the model installed.

The items to be followed are classified by the symbols:

• This symbol denotes item that is PROHIBITED from doing.

Carry out test run to confirm that no abnormality occurs after the servicing. Then, explain to user the operation, care and maintenance as stated in instructions. Please remind the customer to keep the operating instructions for future reference.

WARNING items:

• Do not modify the machine, part, material during repairing service.
• If wiring unit is supplied as repairing part, do not repair or connect the wire even only partial wire break. Exchange the whole wiring unit.
• Do not wrench the fasten terminal. Pull it out or insert it straightly.
• Engage dealer or specialist for installation and servicing. If installation of servicing done by the user is defective, it will cause water leakage, electrical shock or fire.
• Install according to this installation instructions strictly. If installation is defective, it will cause water leakage, electric shock or fire.
• Use the attached accessories parts and specified parts for installation and servicing. Otherwise, it will cause the set to fall, water leakage, fire or electrical shock.
• Install at a strong and firm location which is able to withstand the set’s weight. If the strength is not enough or installation is not properly done, the set will drop and cause injury.
• For electrical work, follow the local national wiring standard, regulation and the installation instruction. An independent circuit and single outlet must be used. If electrical circuit capacity is not enough or defect found in electrical work, it will cause electrical shock or fire.
• This equipment is strongly recommended to install with Earth Leakage Circuit Breaker (ELCB) or Residual Current Device (RCD). Otherwise, it may cause electrical shock and fire in case equipment breakdown or insulation breakdown.
• Do not use joint cable for indoor / outdoor connection cable. Use the specified indoor / outdoor connection cable, refer to installation instruction CONNECT THE CABLE TO THE INDOOR UNIT and connect tightly for indoor / outdoor connection. Clamp the cable so that no external force will be acted on the terminal. If connecting or fixing is not perfect, it will cause heat up or fire at the connection.
• Wire routing must be properly arranged so that control board cover is fixed properly. If control board cover is not fixed perfectly, it will cause heat-up or fire at the connection point of terminal, fire or electrical shock.
• When install or relocate air conditioner, do not let any substance other than the specified refrigerant, e.g. air etc. mix into refrigeration cycle (piping). (Mixing of air etc. will cause abnormal high pressure in refrigeration cycle and result in explosion, injury etc.).
• Do not install outdoor unit near handrail of veranda. When installing air-conditioner unit at veranda of high rise building, child may climb up to outdoor unit and cross over the handrail and causing accident.
• This equipment must be properly earthed. Earth line must not be connected to gas pipe, water pipe, earth of lightning rod and telephone. Otherwise, it may cause electric shock in case equipment breakdown or insulation breakdown.
• Keep away from small children, the thin film may cling to nose and mouth and prevent breathing.
• Do not use unspecified cord, modified cord, joint cord or extension cord for power supply cord. Do not share the single outlet with other electrical appliances. Poor contact, poor insulation or over current will cause electrical shock or fire.
• Tighten the flare nut with torque wrench according to specified method. If the flare nut is over-tightened, after a long period, the flare may break and cause refrigerant gas leakage.
• In case of using existing (R22) pipes during installation of R410 models, must carry out pump down properly to collect back the refrigerant and oil before installation new unit. Thickness of copper pipes used with R410A must be more than 0.6mm. Never use copper pipes thinner than 0.6mm. It is desirable that the amount of residual oil is less than 40 mg/10m.
• During installation, install the refrigerant piping properly before run the compressor. (Operation of compressor without fixing refrigeration piping and valves at opened condition will cause suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion, injury etc.).
• During pump down operation, stop the compressor before remove the refrigerant piping. (Removal of refrigeration piping while compressor is operating and valves are opened condition will cause suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion, injury etc.).
• After completion of installation or service, confirm there is no leakage or refrigerant gas. It may generate toxic gas when the refrigerant contacts with fire.
• Ventilate if there is refrigerant gas leakage during operation. It may cause toxic gas when refrigerant contacts with fire.
• Do not insert your fingers or other objects into the unit, high speed rotating fan may cause injury.
• Must not use other parts except original parts describe in catalog and manual.

CAUTION items:

• Do not install the unit at place where leakage of flammable gas may occur. In case gas leaks and accumulates at surrounding of the unit, it may cause fire.
• Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage the furniture.
• Tighten the flare nut with torque wrench according to specified method. If the flare nut is over-tightened, after a long period, the flare may break and cause refrigerant gas leakage.
• Do not touch outdoor unit air inlet and aluminium fin. It may cause injury.
• Select an installation location which is easy for maintenance.
• Pb free solder has a higher melting point than standard solder; typically the melting point is 50°F – 70°F (30°C – 40°C) higher. Please use a high temperature solder iron. In case of the soldering iron with temperature control, please set it to 700 ± 20°F (370 ± 10°C). Pb free solder will tend to splash when heated too high (about 1100°F / 600°C).
• Power supply connection to the air conditioner. Connect the power supply cord of the air conditioner to the mains using one of the following methods. Power supply point shall be the place where there is ease for access for the power disconnection in case of emergency. In some countries, permanent connection of this room air conditioner to the power supply is prohibited.
  • Power supply connection to the receptacle using a power plug. Use an approved 15/16A (1.0 ~ 1.75HP) or 16A (2.0HP) or 20A (2.5HP) power plug with earth pin for the connection to the socket.
  • Power supply connection to a circuit breaker for the permanent connection. Use an approved 16A (1.0 ~ 2.0HP) or 20A (2.5HP) circuit breaker for the permanent connection. It must be a double pole switch with a minimum 3.0 mm contact gap.
• Do not release refrigerant during piping work for installation, servicing, reinstallation and during repairing a refrigerant parts. Take care of the liquid refrigerant, it may cause frostbite.
• Installation or servicing work: It may need two people to carry out the installation or servicing work.
• Do not install this appliance in a laundry room or other location where water may drip from the ceiling, etc.
• Do not sit or step on the unit, you may fall down accidentally.
• Do not touch the sharp aluminium fin, sharp parts may cause injury.

The specifications for the PANASONIC CS-E18JD3EA CU-E18HBEA are as follows, based on EUROVENT / AS Performance Test Condition, Single, 50 Phase, Hz:

Cooling Specifications (Voltage 230V)

Cooling Specifications (Voltage 240V)

Heating Specifications (Voltage 230V)

Heating Specifications (Voltage 240V)

Compressor Details:

Fan Details (Indoor Unit – Sirocco):

Fan Details (Outdoor Unit – Propeller Fan):

Performance Data:

Refrigeration Cycle Details:

Dimension Details (mm (inch)):

Weight Details (kg (lb)):

Piping Details:

Heat Exchanger Details (Indoor Unit):

Heat Exchanger Details (Outdoor Unit):

Operation Range Details:

The features of the PANASONIC CS-E18JD3EA include:

Inverter Technology:

• Wider output power range
• Energy saving
• Quick Cooling
• Quick Heating
• More precise temperature control

Environment Protection:

• Non-ozone depletion substances refrigerant (R410A)

Long Installation Piping:

• Long piping up to 30 meter (E18HBEA)

Easy to use remote control

Quality Improvement:

• Random auto restart after power failure for safety restart operation
• Gas leakage protection
• Prevent compressor reverse cycle
• Inner protector to protect compressor
• Noise prevention during soft dry operation

Operation Improvement:

• Quiet mode to reduce the indoor unit operating sound
• Powerful mode to reach the desired room temperature quickly
• 24-hour timer setting

Serviceability Improvement:

• Breakdown Self Diagnosis function

The Test Run operation for the PANASONIC CU-E18HBEA will be activated by short-circuiting CN-S at the outdoor unit PCB after applying power between the terminal 1 and 2. The unit is then forced to run rated frequency cooling operation mode.

The location of CN-S on the outdoor unit PCB is shown in the diagram for the CU-E15HBEA CU-E18HBEA.

For the Cooling Operation thermostat control on the PANASONIC CS-E18JD3EA:

• Compressor is OFF when Intake Air Temperature – Internal Setting Temperature is less than -1.5°C.
• Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature – Internal Setting Temperature is greater than the Compressor OFF point.

For the Soft Dry Operation thermostat control on the PANASONIC CS-E18JD3EA:

• Compressor is OFF when Intake Air Temperature – Internal Setting Temperature is less than -2.0°C.
• Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature – Internal Setting Temperature is greater than the Compressor OFF point.

For the Heating Operation thermostat control on the PANASONIC CS-E18JD3EA:

• Compressor is OFF when Intake Air Temperature – Internal Setting Temperature is greater than +2.0°C.
• Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature – Internal Setting Temperature is less than the Compressor OFF point.

When the powerful mode is selected on the PANASONIC CS-E18JD3EA, the internal setting temperature will shift higher up to 3.5°C (for Heating) or lower up to 2°C (for Cooling/Soft Dry) than the remote control setting temperature for 20 minutes to achieve the setting temperature quickly.

For the ON Timer Control on the PANASONIC CS-E18JD3EA, 60 minutes before the set time, the indoor fan motor (at fan speed of Lo-) and the outdoor fan motor start operating for 30 seconds to determine the indoor intake air temperature and outdoor air temperature in order to judge the operation starting time. The decided operation will start operating earlier than the set time based on this judgment.

When the power supply is cut off during the operation of the PANASONIC CS-E18JD3EA air conditioner, the compressor will re-operate within three to four minutes (there are 10 patterns between 2 minutes 58 seconds and 3 minutes 52 seconds to be selected randomly) after power supply resumes. This control is not applicable during ON/OFF Timer setting.

The indication panel on the PANASONIC CS-E18JD3EA has the following meanings for the LED:

Note: If OFF/ON operation LED is OFF and OFF indicator does not show on remote control display, there is an abnormality operation occurs.

Protection Control For All Operations on the PANASONIC CS-E18JD3EA includes:

Restart Control (Time Delay Safety Control):

• The Compressor will not turn on within 3 minutes from the moment operation stops, although the unit is turned on again by pressing OFF/ON button at remote control within this period.
• This control is not applicable if the power supply is cut off and on again.
• This phenomenon is to balance the pressure inside the refrigerant cycle.

30 Seconds Forced Operation:

• Once the air conditioner is turned on, the compressor will not stop within 30 seconds in a normal operation although the intake air temperature has reached the thermo-off temperature. However, force stop by pressing the OFF/ON button at the remote control is permitted or the Auto OFF/ON button at indoor unit.
• The reason for the compressor to force operation for minimum 30 seconds is to allow the refrigerant oil run in a full cycle and return back to the outdoor unit.

Total Running Current Control:

1. When the outdoor unit total running current (AC) exceeds X value, the frequency instructed for compressor operation will be decreased.
2. If the running current does not exceed X value for five seconds, the frequency instructed will be increased.
3. However, if total outdoor unit running current exceeds Y value, compressor will be stopped immediately for 3 minutes.

The first 30 minutes of cooling operation, (A) will be applied, according to the following table for PANASONIC CS-E18JD3EA:

IPM (Power transistor) Prevention Control:

A. Overheating Prevention Control:

1. When the IPM temperature rises to 110°C, compressor operation will stop immediately.
2. Compressor operation restarts after three minutes the temperature decreases to 95°C.

B. DC Peak Current Control:

1. When electric current to IPM exceeds set value of 22.33 ± 5.0 A, the compressor will stop operate. Then, operation will restart after three minutes.
2. If the set value is exceeded again more than 30 seconds after the compressor starts, the operation will restart after two minutes.
3. If the set value is exceeded again within 30 seconds after the compressor starts, the operation will restart after one minute. If this condition repeats continuously for seven times, all indoor and outdoor relays will be cut off.

Compressor Overheating Prevention Control:

• Instructed frequency for compressor operation will be regulated by compressor discharge temperature. The changes of frequency are as shown in the figure.
• If compressor discharge temperature exceeds 112°C, compressor will be stop, occurs 4 times per 20 minutes, timer LED will be blinking (“F97” is to be confirmed).

Protection Controls For Cooling & Soft Dry Operation on the PANASONIC CS-E18JD3EA include:

Outdoor Air Temperature Control:

• The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the diagram.
• This control will begin 1 minute after the compressor starts.
• Compressor frequency will adjust base on Outdoor Air Temperature.

Cooling Overload Control (Pipe temperature limitation/restriction):

• Detects the Outdoor pipe temperature and carry out below restriction/limitation (Limit the compressor Operation frequency).
• The compressor stops if outdoor pipe temperature exceeds 63°C.
• If the compressor stops 4 times in 20 minutes, Timer LED blinking (F95: outdoor high pressure rise protection).

Dew Prevention Control 1:

1. To prevent dew formation at indoor unit discharge area.
2. This control activates if:
   • Outdoor air temperature and Indoor pipe temperature judgment by microcontroller is fulfilled.
   • When Cooling or Dry mode is operated more than 20 minutes or more.
3. This control stops if:
   • Compressor stopped.
   • Remote control setting changed (fan speed / temperature).
   • Outdoor air temperature and indoor intake temperature changed.

Dew Prevention Control 2:

1. To prevent dew formation at indoor unit discharge area.
2. This control starts if all conditions continue for 20 minutes:
   • Operated with Cooling or Soft Dry Mode.
   • Indoor intake temperature is between 25°C and 29°C.
   • Outdoor air temperature is less than 30°C.
   • Quiet Lo fan speed.
3. This control stops if:
   • When receive air swing change signal from Remote Control.

Freeze Prevention Control:

1. When indoor heat exchanger temperature is lower than 7°C continuously for six minutes, compressor will stop operating.
2. Compressor will resume its operation 3 minutes after the indoor heat exchanger is higher than 13°C.
3. At the same time, indoor fan speed will be higher than during its normal operation.
4. If indoor heat exchanger temperature is higher than 13°C for 5 minutes, the fan speed will return to its normal operation.

Protection Controls For Heating Operation on the PANASONIC CS-E18JD3EA include:

Intake Air Temperature Control:

• Compressor will operate at maximum frequency if below conditions occur:
  • When the indoor intake air temperature is 30°C or above.

Outdoor Air Temperature Control:

• The maximum current value is regulated when the outdoor air temperature rises above 14°C in order to avoid compressor overloading.

Overload Protection Control:

• The compressor operating frequency is regulated in accordance to indoor heat exchanger temperature as shown in below figures. If the heat exchanger temperature exceeds 60°C, compressor will stop.

Cold Draught Operation:

• When indoor pipe temperature is low, cold draught operation starts where indoor fan speed will be reduced.

Deice Operation:

• When outdoor pipe temperature and outdoor temperature is low, deice operation starts where indoor fan motor and outdoor fan motor stop and operation LED blinks.

The malfunction causes for Error Code H11 (Indoor/Outdoor Abnormal Communication) on the PANASONIC CS-E18JD3EA are:

• Faulty indoor unit PCB.
• Faulty outdoor unit PCB.
• Indoor unit-outdoor unit signal transmission error due to wrong wiring.
• Indoor unit-outdoor unit signal transmission error due to breaking of wire in the connection wires between the indoor and outdoor units.
• Indoor unit-outdoor unit signal transmission error due to disturbed power supply waveform.

Troubleshooting steps for Error Code H11 (Indoor/Outdoor Abnormal Communication) on the PANASONIC CS-E18JD3EA when abnormality indication starts again:

1. Check the indoor-outdoor units’ connection wires. If there is any wiring error, correct the indoor-outdoor units connection wires.
2. If no wiring error, disconnect terminal 3 wire and measure Vdc between terminal 2 & 3 from the outdoor unit.
   • If the Vdc fluctuates between 20-70Vdc, reconnect terminal 3 wire and measure Vdc between terminal 2 & 3 from the outdoor unit again. If the Vdc fluctuates between 20-50Vdc, replace indoor unit PCB.
   • If the Vdc does not fluctuate between 20-70Vdc, replace outdoor PCB.

Caution: For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Troubleshooting steps for Error Code H12 (Indoor/Outdoor Capacity Rank Mismatched) on the PANASONIC CS-E18JD3EA when abnormality indication starts again:

1. Check the indoor and outdoor unit connection wires. If there is any wiring error, correct the indoor-outdoor units connection wires.
2. If no wiring error, check indoor and outdoor units model number.
   • If indoor unit and outdoor unit model numbers do not match, match the compatible model(s).
   • If model numbers match, check the spare part numbers of the indoor and outdoor unit PCBs and compare with their Part Data.
   • If compatibility is not matched, change for the specified indoor or outdoor unit PCB.
   • If compatibility is matched, replace the indoor and outdoor unit PCBs.

Caution: For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Troubleshooting steps for Error Code H14 (Indoor Intake Air Temperature Sensor Abnormality) on the PANASONIC CS-E18JD3EA when abnormality indication starts again:

1. Check the connector connection: Turn off the power and check the connector connection. If the connector connection is not normal, connect poor contact or correct the connection.
2. If the connector connection is normal, check the indoor intake air temperature sensor: Plug out connector from the indoor unit PCB and measure the resistance of the indoor intake air temperature sensor.
   • If the measured resistance of the indoor intake air temperature sensor matches the value specified in its characteristic chart (refer to the Sensor (Thermistor) Characteristics chart where curve (2) corresponds to the Intake Air Temp. Sensor), then proceed to the next step.
   • If the measured resistance does not match the value specified, defect in indoor intake air temperature sensor. Replace the indoor intake air temperature sensor. Or defect in indoor unit PCB. Replace the indoor unit PCB.

Caution: For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Troubleshooting steps for Error Code H15 (Compressor Temperature Sensor Abnormality) on the PANASONIC CS-E18JD3EA when abnormality indication starts again:

1. Check the connector connection: Turn off the power and check the connector connection. If the connector connection is not normal, connect poor contact or correct the connection.
2. If the connector connection is normal, check the outdoor compressor temperature sensor: Plug out connector from the outdoor unit PCB and measure the resistance of the outdoor compressor temperature sensor.
   • If the measured resistance of the outdoor compressor temperature sensor matches the value specified in its characteristic chart (refer to the Compressor Temp. Sensor (Thermistor) Characteristics chart where curve (1) corresponds to the Outdoor Compressor Temperature Sensor), then proceed to the next step.
   • If the measured resistance does not match the value specified, defect in outdoor compressor temperature sensor. Replace the outdoor compressor temperature sensor. Or defect in outdoor unit PCB. Replace the outdoor unit PCB.

Caution: For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Troubleshooting steps for Error Code H16 (Outdoor Current Transformer Open Circuit) on the PANASONIC CS-E18JD3EA when abnormality indication starts again:

1. Operate normal heating operation. When H16 occurs again, turn OFF the power.
2. Check the 2/3 way valve.
   • If the 2/3 way valve is closed, open the 2/3 way valve.
3. Check for gas leakage.
   • If oil oozing out from the 2/3 way valve, repair the pipe flare or union nuts. Reclaim and recharge refrigerant.
4. If no oil oozing, turn ON the power and operate FORCE HEATING. Measure the current from the outdoor LIVE terminal.
   • If the current is < 1.0A, defect in CT or Replace the outdoor unit PCB.
5. If the current is not < 1.0A (YES), while the system is still in FORCE HEATING, check the discharge pressure.
   • If the pressure is unchanged (same as when compressor stop), Replace the outdoor unit PCB.
   • If the pressure is changed, while the system is still in FORCE HEATING, further check by touching the compressor. If the compressor discharge pipe is cold and the compressor body is warm, this confirms the compressor low compression. Replace the compressor.

Caution: For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Troubleshooting steps for Error Code H19 (Indoor Fan Motor – DC Motor Mechanism Locked) on the PANASONIC CS-E18JD3EA when abnormality indication starts again:

1. Turn off power supply and rotate fan by hand.
   • If the fan does not rotate smoothly, replace fan motor.
2. If it rotates smoothly (YES), turn power supply on and operate fan.
   • If it rotates, stop fan motor.
3. If it does not rotate (NO), turn off power supply and disconnect fan motor connector, then turn power on. Check the rotation feedback output from fan motor.
   • If the rotation feedback voltage 15VDC (pin 7 & 4) is generated, rotate the fan motor by hand. If the rotation feedback voltage 15VDC (pin 7 & 4) is generated, proceed to check output from indoor PCB. If rotation feedback voltage is not generated, replace indoor PCB.
4. Check the output of fan motor from indoor PCB.
   • Is the motor power supply voltage ~325Vdc (pin 1 & 4) generated?
     • If NO, is the motor control voltage 15Vdc (pin 3 & 4) generated?
       • If NO, operate the fan, the rotation command voltage 1-5Vdc (pin 5 & 4) generated?
         • If NO, replace indoor PCB.
         • If YES, replace fan motor.
       • If YES, replace indoor PCB.
     • If YES, replace fan motor.

Caution: For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Troubleshooting steps for Error Code H23 (Indoor Pipe Temperature Sensor Abnormality) on the PANASONIC CS-E18JD3EA when abnormality indication starts again:

1. Check the connector connection: Plug out connector from the indoor unit PCB and measure the resistance of the indoor pipe temperature sensor. If the connector connection is not normal, connect poor contact or correct the connection.
2. If the connector connection is normal, check the outdoor air temperature sensor: Plug out connector from the outdoor unit PCB and measure the resistance of the outdoor air temperature sensor.
   • If the measured resistance of the outdoor air temperature sensor matches the value specified in its characteristic chart (refer to the Sensor (Thermistor) Characteristics chart where curve (1) corresponds to Outdoor Air Temp. Sensor), then proceed.
   • If the measured resistance does not match the value specified, defect in outdoor air temperature sensor or replace the outdoor air temperature sensor. Also, detect in outdoor unit PCB or replace the outdoor unit PCB.

Caution: For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Troubleshooting steps for Error Code H24 (Indoor Pipe Temperature Sensor 2 Abnormality) on the PANASONIC CS-E18JD3EA when abnormality indication starts again:

1. Check the connector connection: Plug out connector from the indoor unit PCB and measure the resistance of the indoor pipe temperature sensor. If the connector connection is not normal, connect poor contact or correct the connection.
2. If the connector connection is normal, check the outdoor air temperature sensor: Plug out connector from the outdoor unit PCB and measure the resistance of the outdoor air temperature sensor.
   • If the measured resistance of the outdoor intake air temperature sensor matches the value specified in its characteristic chart (refer to the Sensor (Thermistor) Characteristics chart where curve (2) corresponds to Intake Air Temp. Sensor), then proceed.
   • If the measured resistance does not match the value specified, defect in outdoor intake air temperature sensor or replace the outdoor intake air temperature sensor. Also, detect in outdoor unit PCB or replace the outdoor unit PCB.

Caution: For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Troubleshooting steps for Error Code H27 (Outdoor Air Temperature Sensor Abnormality) on the PANASONIC CS-E18JD3EA when abnormality indication starts again:

1. Check the connector connection: Turn off the power and check the connector connection. If the connector connection is not normal, connect poor contact or correct the connection.
2. If the connector connection is normal, check the outdoor air temperature sensor: Plug out connector from the outdoor unit PCB and measure the resistance of the outdoor air temperature sensor.
   • If the measured resistance of the outdoor air temperature sensor matches the value specified in its characteristic chart (refer to the Sensor (Thermistor) Characteristics chart where curve (1) corresponds to Outdoor Air Sensor), then proceed.
   • If the measured resistance does not match the value specified, defect in outdoor air temperature sensor or replace the outdoor air temperature sensor. Or defect in outdoor unit PCB. Replace the outdoor unit PCB.

Caution: For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Troubleshooting steps for Error Code H28 (Outdoor Pipe Temperature Sensor Abnormality) on the PANASONIC CS-E18JD3EA when abnormality indication starts again:

1. Check the connector connection: Turn off the power and check the connector connection. If the connector connection is not normal, connect poor contact or correct the connection.
2. If the connector connection is normal, check the outdoor heat exchanger temperature sensor: Plug out connector from the outdoor unit PCB and measure the resistance of the outdoor heat exchanger temperature sensor.
   • If the measured resistance of the outdoor heat exchanger temperature sensor matches the value specified in its characteristic chart (refer to the Sensor (Thermistor) Characteristics chart where curve (2) corresponds to Outdoor Heat Exchanger Sensor), then proceed.
   • If the measured resistance does not match the value specified, defect in outdoor heat exchanger temperature sensor or replace the outdoor heat exchanger temperature sensor. Or defect in outdoor unit PCB. Replace the outdoor unit PCB.

Caution: For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Troubleshooting steps for Error Code H30 (Compressor Discharge Temperature Sensor Abnormality) on the PANASONIC CS-E18JD3EA when abnormality indication starts again:

1. Check the connector connection: Turn off the power and check the connector connection. If the connector connection is not normal, connector poor contact or correct the connection.
2. If the connector connection is normal, check the outdoor discharge pipe temperature sensor: Plug out connector from the outdoor unit PCB and measure the resistance of the outdoor discharge pipe temperature sensor.
   • If the measured resistance of the outdoor discharge pipe temperature sensor matches the value specified in its characteristic chart, then proceed.
   • If the measured resistance does not match the value specified, defect in outdoor discharge pipe temperature sensor or replace the outdoor discharge pipe temperature sensor. Or defect in outdoor unit PCB. Replace the outdoor unit PCB.

Caution: For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Troubleshooting steps for Error Code H97 (Outdoor Fan Motor – DC Motor Mechanism Locked) on the PANASONIC CS-E18JD3EA when abnormality indication starts again:

1. Turn off power supply and rotate fan by hand.
   • If the fan does not rotate smoothly, replace fan motor.
2. If it rotates smoothly (YES), turn power supply on and operate fan.
   • If it rotates, stop fan motor.
3. If it does not rotate (NO), turn off power supply and disconnect fan motor connector, then turn power on. Check the rotation feedback output from fan motor.
   • If the rotation feedback voltage 15VDC (pin 1 & 4) is generated, rotate the fan motor by hand. If the rotation feedback voltage 15VDC (pin 1 & 4) is generated, proceed to check the output of fan motor from indoor PCB. If rotation feedback voltage is not generated, replace indoor PCB.
4. Check the output of fan motor from indoor PCB.
   • Is the motor power supply voltage ~325Vdc (pin 7 & 4) generated?
     • If NO, is the motor control voltage 15Vdc (pin 3 & 4) generated?
       • If NO, operate the fan, the rotation command voltage 1-5Vdc (pin 2 & 4) generated?
         • If NO, replace indoor PCB.
         • If YES, replace fan motor.
       • If YES, replace indoor PCB.
     • If YES, replace fan motor.

Caution: For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

The Malfunction Decision Conditions for Error Code H98 (Indoor High Pressure Protection) on the PANASONIC CS-E18JD3EA are: During heating operation, the temperature detected by the indoor pipe temperature sensor is above 60°C. This error code will not display (no Timer LED blinking) but is stored in EEPROM.

The Malfunction Causes for Error Code H98 (Indoor High Pressure Protection) on the PANASONIC CS-E18JD3EA are:

• Air short circuit.
• Clogged air filter of the indoor unit.
• Dust accumulation on the indoor unit heat exchanger.
• 2/3 way valve closed.
• Detection error due to faulty indoor fan motor.
• Excessive refrigerant.
• Clogged expansion valve or strainer.
• Detection error due to faulty indoor pipe temperature sensor.
• Detection error due to faulty indoor unit PCB.

The Malfunction Decision Conditions for Error Code H99 (Indoor Freeze Prevention Protection: Cooling or Soft Dry) on the PANASONIC CS-E18JD3EA are: Freeze prevention control takes place when the indoor pipe temperature is lower than 2°C continuously. This error code will not display (no TIMER LED blinking) but is stored in EEPROM.

The Malfunction Causes for Error Code H99 (Indoor Freeze Prevention Protection: Cooling or Soft Dry) on the PANASONIC CS-E18JD3EA are:

• Air short circuit.
• Clogged air filter of the indoor unit.
• Dust accumulation on the indoor unit heat exchanger.
• 2/3 way valve closed.
• Faulty indoor fan motor.
• Refrigerant shortage (refrigerant leakage).
• Detection error due to faulty indoor pipe temperature sensor.
• Detection error due to faulty indoor unit PCB.

Troubleshooting steps when F11 indication happens on the PANASONIC CS-E18JD3EA:

1. Check the indoor pipe temperature sensor.
   • If it does not conform to the sensor characteristic chart, replace the indoor pipe temperature sensor.
   • If it conforms to the sensor characteristic chart (YES), check if the 4-way valve coil is energized during cooling operation.
2. Check if the 4-way valve coil is energized during cooling operation?
   • If NO, replace the outdoor unit PCB.
   • If YES, check harness out of connector?
3. Check harness out of connector?
   • If NO, reconnect the harness.
   • If YES, check the continuity of the 4-way valve coil.
4. Check the continuity of the 4-way valve coil.
   • If NO, disconnect the harness from the connector. Resistance between harnesses about 18Ω?
     • If YES, replace the 4-way valve coil.
     • If NO, measure DC voltage supply to CN-HOT (pin1 & 2) during heating operation.
5. Measure DC voltage supply to CN-HOT (pin1 & 2) during heating operation.
   • If the voltage supply to 4-way valve is 2.5-4.5VDC (YES), replace the outdoor unit PCB.
   • If the voltage supply is not 2.5-4.5VDC (NO), replace the 4-way valve.

Caution: For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Troubleshooting steps when abnormality indication starts again for Error Code F90 (Power Factor Correction Protection) on the PANASONIC CS-E18JD3EA:

1. Check the supply voltage.
   • If supply voltage is not as specified, correct the power supply.
   • If supply voltage is as specified (YES), operate the system. Verify PFC abnormality by measuring DC voltage between P(+) and N(-) terminal at outdoor unit PCB.
2. Is the DC voltage between P(+) and N(-) terminal normal between 285-315Vdc?
   • If NO, defect in PFC circuitry or Replace the outdoor unit PCB.
   • If YES, check the compressor winding resistance. Turn off the power supply and then reconnect the harness U, V and W. Measure the winding resistance between U-V, V-W and W-U.
3. Are the compressor’s winding resistance (U-V, V-W, W-U) uniform?
   • If NO, replace the compressor.
   • If YES, replace the outdoor unit PCB.

Caution: For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Troubleshooting steps when F91 indication happens on the PANASONIC CS-E18JD3EA:

1. Check the indoor air intake and pipe temperature sensors.
   • If it does not conform to the sensor characteristic chart, replace the indoor intake air or pipe temperature sensor.
2. If it conforms to the sensor characteristic chart (YES), check 2/3-way valve opened?
   • If NO, open 2/3 way valve.
3. If 2/3-way valve is opened (YES), check for gas leaking.
   • If oil oozing out from the 2/3 way valve, repair the pipe flare or union nuts. Reclaim and recharge refrigerant.
   • If no oil oozing (NO), check if capillary tube or dryer is clogged?
4. Check if capillary tube or dryer is clogged?
   • If YES (ice formed), replace the capillary tube or dryer.
   • If NO, charge for a specified amount of fresh refrigerant.
5. If fresh refrigerant is charged, check if refrigerant cycle abnormality error again?
   • If YES, replace outdoor unit PCB & compressor.
   • If NO, procedure complete.

Caution: For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Troubleshooting steps for Error Code F93 (Compressor Rotation Failure) on the PANASONIC CS-E18JD3EA when F93 indication happens:

1. Check the U, V and W connector connection: Turn OFF the power and check the U, V and W connection at outdoor unit PCB and compressor terminal.
   • If the connector connection is not normal, correct the connection.
2. If the connector connection is normal (YES), disconnect the harnesses U, V and W from the compressor terminal.
   • From the disconnected harnesses U, V and W, connect them to the inverter checker. Turn ON the power and operate the inverter checker. If the 6 LEDs blinking condition is the same, proceed. If not the same, check the 6 LEDs blinking condition.
     • If the 6 LEDs are in the same sequence/condition, replace compressor.
     • If the 6 LEDs are not in the same sequence/condition, IPM defective or Replace outdoor unit PCB.

Caution: For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Troubleshooting steps for Error Code F95 (Cooling High Pressure Abnormality) on the PANASONIC CS-E18JD3EA when F95 indication happens:

1. Check the outdoor air passage.
   • If there is any short circuit, provide sufficient air passage.
2. If there is no short circuit (YES), check the dust accumulation on the outdoor unit heat exchanger.
   • If the outdoor unit heat exchanger is dirty, clean the outdoor heat exchanger.
3. If the outdoor unit heat exchanger is not dirty (YES), check the 2/3 way valve.
   • If the 2/3 way valve is closed, open the 2/3 way valve.
4. If the 2/3 way valve is not closed (YES), check the outdoor unit fan motor operation.
   • If the fan motor does not operate normally, replace the outdoor unit fan motor and/or outdoor PCB.
5. If the fan motor operates normally (YES), check refrigerant amount.
   • If the additional refrigerant amount filled correctly, reclaim and recharge with correct amount of refrigerant.
6. If the additional refrigerant amount is not filled correctly (YES), check for clogged expansion valve or strainer.
   • If the expansion valve or strainer is clogged (ice formed), replace the outdoor fan motor.
   • If the expansion valve or strainer is not clogged (NO), check the outdoor pipe temperature sensor.
7. Check the outdoor pipe temperature sensor.
   • If it does not conform to the sensor characteristic charts, replace the outdoor pipe temperature sensor.
   • If it conforms to the sensor characteristic charts (YES), replace outdoor unit PCB.

Caution: For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Troubleshooting steps for Error Code F96 (IPM Overheating) on the PANASONIC CS-E18JD3EA when F96 indication happens:

1. Check the outdoor unit installation environment during cooling or soft dry operation.
   • If there is improper heat radiation (YES), reinstall the outdoor unit, remove the obstacle(s), and clean the outdoor heat exchanger.
2. If there is no improper heat radiation (NO), check if outdoor fan motor is operating?
   • If NO, replace the outdoor fan motor.
   • If YES, defect in IPM or Replace the outdoor unit PCB.

Caution: For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Troubleshooting steps for Error Code F97 (Compressor Overheating) on the PANASONIC CS-E18JD3EA when F97 indication happens:

1. Check the compressor tank temperature sensor.
   • If it does not conform to the sensor characteristic chart, replace the compressor tank temperature sensor.
2. If it conforms to the sensor characteristic chart (YES), check if 2/3 way valve is closed?
   • If YES, open the 2/3 way valve.
3. If 2/3 way valve is not closed (NO), check for gas leakage.
   • If oil oozing out from the 2/3 way valve, repair the pipe flare or union nuts. Reclaim and recharge refrigerant.
   • If no oil oozing (NO), check if capillary tube or dryer is clogged?
4. Check if capillary tube or dryer is clogged?
   • If YES, replace the capillary tube or dryer.
   • If NO, charge for a specified amount of fresh refrigerant.
5. If fresh refrigerant is charged, check if refrigerant cycle abnormality error again?
   • If YES, replace outdoor unit PCB or replace outdoor unit compressor.
   • If NO, procedure complete.

Caution: For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Troubleshooting steps for Error Code F98 (Input Over Current Detection) on the PANASONIC CS-E18JD3EA when F98 indication happens:

1. Get restarted and measure the input current.
   • If input current > 15.06A (YES), turn off power supply. Check the main circuit electrolytic capacitor.
     • If Normal (YES), repair the pipe flare or union nuts. Reclaim and recharge refrigerant.
     • If not Normal (NO), replace the outdoor unit PCB.
   • If input current is not > 15.06A (NO), replace the outdoor unit PCB.

If the input current > 15.06A (YES) and after checking the main circuit electrolytic capacitor, the result is not Normal (NO), then check refrigerant amount.

• If excess refrigerant (YES), reclaim and recharge with correct amount of refrigerant.
• If not excess refrigerant (NO), replace outdoor unit PCB or replace outdoor unit compressor.

Caution: For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

Troubleshooting steps for Error Code F99 (Output Over Current Detection) on the PANASONIC CS-E18JD3EA when F99 indication happens:

1. Get restarted and measure the input current.
   • If input current > 20.2A (YES), check the compressor winding resistance. Turn off the power and disconnect the harness U, V and W. Measure the winding resistance between U-V, V-W and W-U.
     • Are the compressor’s winding resistance (U-V, V-W, W-U) uniform?
       • If YES, compressor defective due to winding shorted or Replace compressor.
       • If NO, outdoor electronic circuit defect due to power transistor shorted or Replace the outdoor unit PCB.
   • If input current is not > 20.2A (NO), replace the outdoor unit PCB.

Checking the power transistor:

• Never touch any live parts for at least 10 minutes after turning off the circuit breaker.
• If unavoidable necessary to touch a live part, make sure the power transistor’s supply voltage is below 50V using the tester.
• For the UVW, make measurement at the Faston terminal on the board of the relay connector.

Tester’s negative terminal to Power transistor (+), UVW, Tester’s positive terminal to Power transistor (-), UVW:

Caution: For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.

To detach the Upper and Inner Casing of the indoor unit for the PANASONIC CS-E18JD3EA:

1. Unscrew the 10 screws on the Upper and Inner Casing and detach them.

WARNING: High Voltage are generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding with repair work. Failure to heed this caution may result in electric shocks.

To detach the Control Board of the PANASONIC CS-E18JD3EA indoor unit:

1. Unscrew the 2 screws on the Control Board and open the Control Board Cover.
2. Pull the Control Board down following the Slide Guide.
3. Lift the Control Board up from the bottom, disengage the Catch holding the Board.

To detach the Fan for the PANASONIC CS-E18JD3EA indoor unit:

1. First detach the Upper and Inner Casing (refer to 16.1.1).
2. Disengage the 4 catches (2 each on the left and right) on the Air Guide.
3. Use a 2.5 mm hexagonal wrench to loosen the 2 bolts connecting the Fan Motor and Fan, detach the shaft connecting the Fan Motor and Fan, loosen the screw holding the Fan and detach the Fan.

To detach the Fan Motor for the PANASONIC CS-E18JD3EA indoor unit:

1. First detach the Upper and Inner Casing (refer to 16.1.1) and the Fan (refer to 16.1.3).
2. Unscrew the 4 screws holding the Fan Motor and detach it.

To detach the Drain Motor for the PANASONIC CS-E18JD3EA indoor unit:

1. First detach the Upper and Inner Casing (refer to 16.1.1) and the Fan (refer to 16.1.3).
2. From the Fan Motor side, undo the 2 hexagon bolts and detach the Drain Motor.

The Wire Stripping and Connecting Requirement for the PANASONIC CS-E18JD3EA installation:

• No loose strand when wire stripping.
• 5 mm or more gap between wires for Indoor/Outdoor connecting terminal board.

Conductor connection:

• Conductor fully insert is ACCEPTABLE.
• Conductor not fully insert is PROHIBITED.

The procedure to connect the cable to the Outdoor Unit for the PANASONIC CU-E18HBEA:

1. Remove the control board cover from the unit by loosening the screw.
2. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 × 1.5 mm2 flexible cord, type designation 245 IEC 57 or heavier cord.
3. Secure the cable onto the control board with the holder (clamper).
4. Cable connection to the power supply (230 – 240V, 50Hz) through knife switch (Disconnecting means).
   • Connect the approved polychloroprene sheathed power supply cable (3 x 1.5 mm2), type designation 245 IEC 57 or heavier cord to the terminal board, and connect the other end of the cable to knife switch (Disconnecting means). Note: Knife switch (Disconnecting means) should have minimum 3.5 mm contact gap.
   • Secure the cable onto the control board with the holder (clamper).

Wiring details for terminals on the indoor unit and outdoor unit for the connecting cable are:

Terminals on the knife switch (Disconnecting means):

Check after connecting the power supply for the drain system on the PANASONIC CS-E18JD3EA indoor unit installation:

• Pour approximately 600 cc of water into the drain pan of the main unit using a squeeze bottle, etc.
• Press the drain test run switch on the control board in the control box to start the drain motor and check whether the water drains normally. (The drain motor operates for approximately 5 minutes and then stops automatically.) (See the diagram for “Connecting the Indoor/Outdoor Connecting Cable”.)

The procedure for connecting the piping to the Outdoor Unit for the PANASONIC CU-E18HBEA:

1. Align the center of the pipings and sufficiently tighten the flare nut with fingers.
2. Finally, tighten the flare nut with torque wrench until the wrench clicks.
   • When tightening the flare nut with torque wrench, ensure the direction for tightening follows the arrow on the wrench.

CAUTION: Do not over tighten, over tightening cause gas leakage. Torque values for PANASONIC CU-E18HBEA piping sizes are:

If the gauge needle does not move from 0 cmHg (0 MPa) to -76 cmHg (-0.1 MPa) in step 3 of evacuation for the PANASONIC CU-E18HBEA, take the following measure:

• If the leak stops when the piping connections are tightened further, continue working from step 5.
• If the leak does not stop when the connections are retightened, repair the location of leak.

Do not release refrigerant during piping work for installation and reinstallation. Take care of the liquid refrigerant, it may cause frostbite.

The proper installation location selection for the outdoor unit of the PANASONIC CU-E18HBEA requires considering the following:

• If an awning is built over the unit to prevent direct sunlight or rain, be careful that heat radiation from the condenser is not obstructed.
• There should not be any animal or plant which could be affected by hot air discharged.
• Keep the spaces indicated by arrows from wall, ceiling, fence or other obstacles.
• Do not place any obstacles which may cause a short circuit of the discharged air.
• If piping length is over 10m, additional refrigerant should be added as shown in the table.

Example: If the unit is installed at a 12m distance, the quantity of additional refrigerant should be 40 g… (12-10) m × 20 g/m = 40 g.

The table for Piping size, Rated length, Max. Elevation, Min. Piping Length, Max. Piping Length, and Additional Refrigerant for PANASONIC CU-E18HBEA is:

To install the outdoor unit for the PANASONIC CU-E18HBEA at the best location, start installation according to the Indoor Outdoor Unit Installation Diagram:

1. Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø10 mm).
2. When installing at roof, please consider strong wind. Please fasten the installation stand firmly with bolt or nails.

Dimensions for fixing the installation stand for PANASONIC CU-E18HBEA are:

The procedure for Connecting The Piping To Outdoor Unit for the PANASONIC CU-E18HBEA is:

1. Align the center of the pipings and sufficiently tighten the flare nut with fingers.
2. Finally, tighten the flare nut with torque wrench until the wrench clicks.

CAUTION: Do not over tighten, over tightening cause gas leakage. Torque values for PANASONIC CU-E18HBEA piping sizes are:

The procedure for CUTTING AND FLARING THE PIPING for the PANASONIC CU-E18HBEA installation is:

1. Please cut using pipe cutter and then remove the burrs.
2. Remove the burrs by using reamer. If burrs is not removed, gas leakage may be caused. Turn the piping end down to avoid the metal powder entering the pipe.
3. Please make flare after inserting the flare nut onto the copper pipes.

The evacuation procedure for the equipment (for Europe & Oceania Destination) for the PANASONIC CU-E18HBEA when installing an air conditioner is:

1. Connect a charging hose with a push pin to the Low and High side of a charging set and the service port of the 3-way valve. Be sure to connect the end of the charging hose with the push pin to the service port.
2. Connect the center hose of the charging set to a vacuum pump with check valve, or vacuum pump and vacuum pump adaptor.
3. Turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves from 0 cmHg (0 MPa) to -76 cmHg (-0.1 MPa). Then evacuate the air approximately ten minutes.
4. Close the valve of the charging set and turn off the vacuum pump. Make sure that the needle in the gauge does not move after approximately five minutes. Note: BE SURE TO TAKE THIS PROCEDURE IN ORDER TO AVOID REFRIGERANT GAS LEAKAGE.
5. Disconnect the charging hose from the vacuum pump and from the service port of the 3-way valve.
6. Tighten the service port caps of both of the 3-way valve at a torque of 18 N m with a torque wrench.
7. Remove the valve caps of both of the 2-way valve and 3-way valve. Position both of the valves to “OPEN” using a hexagonal wrench (4 mm).
8. Mount valve caps onto the 2-way valve and the 3-way valve. Be sure to check for gas leakage.

If gauge needle does not move from 0 cmHg (0 MPa) to -76 cmHg (-0.1 MPa), in step 3 above take the following measure:

• If the leak stops when the piping connections are tightened further, continue working from step 5.
• If the leak does not stop when the connections are retightened, repair the location of leak.

Do not release refrigerant during piping work for installation and reinstallation. Take care of the liquid refrigerant, it may cause frostbite.

The Wire Stripping and Connecting Requirement for the PANASONIC CS-E18JD3EA connection:

Wire stripping:

• No loose strand when wire stripping.
• 5 mm or more gap between wires for Indoor/outdoor connecting terminal board.

Connecting cable details:

• Connecting cable between indoor unit and outdoor unit should be approved polychloroprene sheathed 4 x 1.5 mm2 flexible cord, designation type 245 IEC 57 (H05RN-F) or heavier cord.
• Ensure that the terminal numbers on the indoor unit are connected to the same terminal numbers on the outdoor unit by the right coloured wires as shown in the diagram.
• Earth lead wire should be longer than the other lead wires as shown in the diagram for electrical safety purpose in case the cord slips out from the anchorage.
• Secure the cable onto the control board with the holder (clamper).

Terminals on the indoor unit and outdoor unit for the connecting cable:

Terminals on the knife switch (Disconnecting means):

The drain check for the PANASONIC CS-E18JD3EA after completing drainage connections involves:

CHECK THE DRAINAGE

1. Check after connecting the power supply.
2. Pour approximately 600 cc of water into the drain pan of the main unit using a squeeze bottle, etc.
3. Press the drain test run switch on the control board in the control box to start the drain motor and check whether the water drains normally. (The drain motor operates for approximately 5 minutes and then stops automatically.) (See the diagram for “Connecting the Indoor/Outdoor Connecting Cable”.)

The process for INSULATING THE REFRIGERANT PIPING after connection for the PANASONIC CS-E18JD3EA installation is:

• After the piping is connected, insulate as shown in the illustration.

The illustration shows piping insulation being secured with tape, leaving no gaps, and using a band.

The general CHECK ITEMS after installation for the PANASONIC CS-E18JD3EA are: