PANASONIC CS-E15JD3EA (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. You must follow the caution items stated because they relate to safety. Incorrect installation or servicing due to ignoring the instruction will cause harm or damage.

Follow these items, which are classified by symbols:

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

Follow these warnings:

• 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.

Follow these cautions:

• 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.

For refrigerant piping insulation: use foamed polyethylene with a thickness of 8 mm or more.

For drain piping insulation: use foamed polyethylene with a thickness of 10 mm or more.

The Indoor Fan Motor for the PANASONIC CS-E15JD3EA has the following characteristics:

The specifications for the Outdoor Fan Motor for the PANASONIC CS-E15JD3EA are as follows:

The moisture removal rates for the PANASONIC CS-E15JD3EA are:

For the PANASONIC CS-E15JD3EA:

The Test Run operation for the PANASONIC CS-E15JD3EA is 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 in rated frequency cooling operation mode.

For the PANASONIC CS-E15JD3EA, here are the Error Codes, Abnormality Judgement, Emergency Operation, and Primary location to verify:

Troubleshooting steps for H11 (Indoor/Outdoor Abnormal Communication) on the PANASONIC CS-E15JD3EA when abnormality indication starts again:

Step 1. Check the indoor-outdoor units’ connection wires.

Step 2. If there is any wiring error, correct the indoor-outdoor units connection wires. If there is no wiring error, proceed.

Step 3. Disconnect terminal 3 wire and measure Vdc between terminal 2 & 3 from the outdoor unit.

Step 4. If the Vdc fluctuates between 20-70Vdc, then replace the outdoor PCB. If the Vdc does not fluctuate between 20-70Vdc, proceed.

Step 5. Reconnect terminal 3 wire and measure Vdc between terminal 2 & 3 from the outdoor unit.

Step 6. If the Vdc fluctuates between 20-50Vdc, then replace the indoor unit PCB. If the Vdc does not fluctuate between 20-50Vdc, the process is complete (assuming this is the final check).

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

Troubleshooting steps for H12 (Indoor/Outdoor Capacity Rank Mismatched) on the PANASONIC CS-E15JD3EA when abnormality indication starts again:

Step 1. Check the indoor and outdoor unit connection wires.

Step 2. If there is any wiring error, correct the indoor-outdoor units connection wires. If there is no wiring error, proceed.

Step 3. Check indoor and outdoor units model number.

Step 4. If indoor unit and outdoor unit model numbers do not match, match the compatible model(s). If they match, proceed.

Step 5. Check the spare part numbers of the indoor and outdoor unit PCBs and compare with their Part data.

Step 6. 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 H14 (Indoor Intake Air Temperature Sensor Abnormality) on the PANASONIC CS-E15JD3EA when abnormality indication starts again:

Step 1. Check the connector connection: Turn off the power and check the connector connection.

Step 2. If the connector connection is not normal, correct the connection or the connector has poor contact. If it is normal, proceed.

Step 3. 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.

Step 4. If the measured resistance of the indoor intake air temperature sensor matches the value specified in its characteristic chart, proceed. If it does not match, there is a defect in the indoor intake air temperature sensor, replace the indoor intake air temperature sensor. If the issue persists, there is a defect in the 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.

Sensor (Thermistor) Characteristics for Indoor Intake Air Temperature Sensor (Reference data from chart on page 62).

Troubleshooting steps for H15 (Compressor Temperature Sensor Abnormality) on the PANASONIC CS-E15JD3EA when abnormality indication starts again:

Step 1. Check the connector connection: Turn off the power and check the connector connection.

Step 2. If the connector connection is not normal, correct the connection or the connector has poor contact. If it is normal, proceed.

Step 3. Check the outdoor compressor temperature sensor: Plug out connector from the outdoor unit PCB and measure the resistance of the outdoor compressor temperature sensor.

Step 4. If the measured resistance of the outdoor compressor temperature sensor matches the value specified in its characteristic chart, proceed. If it does not match, there is a defect in the outdoor compressor temperature sensor, replace the outdoor compressor temperature sensor. If the issue persists, there is a defect in the 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.

Compressor Temp. Sensor (Thermistor) Characteristics (Reference data from chart on page 63).

Troubleshooting steps for H16 (Outdoor Current Transformer Open Circuit) on the PANASONIC CS-E15JD3EA when abnormality indication starts again:

Step 1. Operate normal heating operation. When H16 occurs again, turn OFF the power.

Step 2. Check the 2/3 way valve.

Step 3. If the 2/3 way valve is closed, open the 2/3 way valve. If not closed, proceed.

Step 4. Check for gas leakage.

Step 5. If oil is oozing out from the 2/3 way valve, repair the pipe flare or union nuts, Reclaim and recharge refrigerant. If no oil oozing, proceed.

Step 6. Turn ON the power and operate FORCE HEATING.

Step 7. Measure the current from the outdoor LIVE terminal.

Step 8. If the current is less than 1.0A, check for defect in CT or replace the outdoor unit PCB. If the current is not less than 1.0A, proceed.

Step 9. While the system is still in FORCE HEATING, check the discharge pressure.

Step 10. If the pressure is unchanged (same as when compressor stop), replace the outdoor unit PCB. If the pressure has changed, proceed.

Step 11. While the system is still in FORCE HEATING, further check (by touching): Compressor discharge pipe is cold, Compressor body is warm. To confirm 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 H19 (Indoor Fan Motor DC Motor Mechanism Locked) on the PANASONIC CS-E15JD3EA when abnormality indication starts again:

Step 1. Turn off power supply and rotate fan by hand.

Step 2. If the fan does not rotate smoothly, replace the fan motor. If it rotates smoothly, proceed.

Step 3. Turn power supply on and operate fan.

Step 4. If it does not rotate, stop the fan motor. If it rotates, proceed.

Step 5. Turn off power supply and disconnect fan motor connector, then turn power on.

Step 6. Check the rotation feedback output from fan motor.

Step 7. Check the output of fan motor from indoor PCB.

Step 8. If the rotation feedback voltage 15VDC (pin 7 & 4) is not generated by rotating the fan motor by hand, proceed. If it is generated, proceed.

Step 9. If the motor power supply voltage ~325Vdc (pin 1 & 4) is not generated, replace the indoor PCB. If it is generated, proceed.

Step 10. If the motor control voltage 15Vdc (pin 3 & 4) is not generated, replace the indoor PCB. If it is generated, proceed.

Step 11. If the rotation command voltage 1-5Vdc (pin 5 & 4) generated? If yes, replace the fan motor. If no, replace indoor PCB.

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

Troubleshooting steps for H23 (Indoor Pipe Temperature Sensor Abnormality) on the PANASONIC CS-E15JD3EA when abnormality indication starts again:

Step 1. Check the connector connection: Plug out connector from the indoor unit PCB and measure the resistance of the indoor pipe temperature sensor.

Step 2. If the connector connection is not normal, correct the connection or the connector has poor contact. If it is normal, proceed.

Step 3. Check the outdoor air temperature sensor: Plug out connector from the outdoor unit PCB and measure the resistance of the outdoor air temperature sensor.

Step 4. If the measured resistance of the outdoor air temperature sensor matches the value specified in its characteristic chart, proceed. If it does not match, there is a defect in the outdoor air temperature sensor, replace the outdoor air temperature sensor. If the issue persists, detect 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.

Sensor (Thermistor) Characteristics (Reference data from chart on page 66).

Troubleshooting steps for H24 (Indoor Pipe Temperature Sensor 2 Abnormality) on the PANASONIC CS-E15JD3EA when abnormality indication starts again:

Step 1. Check the connector connection: Plug out connector from the indoor unit PCB and measure the resistance of the indoor pipe temperature sensor.

Step 2. If the connector connection is not normal, correct the connection or the connector has poor contact. If it is normal, proceed.

Step 3. Check the outdoor air temperature sensor: Plug out connector from the outdoor unit PCB and measure the resistance of the outdoor intake air temperature sensor.

Step 4. If the measured resistance of the outdoor intake air temperature sensor matches the value specified in its characteristic chart, proceed. If it does not match, there is a defect in the outdoor intake air temperature sensor, replace the outdoor intake air temperature sensor. If the issue persists, detect 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.

Sensor (Thermistor) Characteristics (Reference data from chart on page 67).

Troubleshooting steps for H27 (Outdoor Air Temperature Sensor Abnormality) on the PANASONIC CS-E15JD3EA when abnormality indication starts again:

Step 1. Check the connector connection: Turn off the power and check the connector connection.

Step 2. If the connector connection is not normal, correct the connection or the connector has poor contact. If it is normal, proceed.

Step 3. Check the outdoor air temperature sensor: Plug out connector from the outdoor unit PCB and measure the resistance of the outdoor air temperature sensor.

Step 4. If the measured resistance of the outdoor air temperature sensor matches the value specified in its characteristic chart, proceed. If it does not match, there is a defect in the outdoor air temperature sensor, replace the outdoor air temperature sensor. If the issue persists, 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.

Sensor (Thermistor) Characteristics (Reference data from chart on page 68).

Troubleshooting steps for H28 (Outdoor Pipe Temperature Sensor Abnormality) on the PANASONIC CS-E15JD3EA when abnormality indication starts again:

Step 1. Check the connector connection: Turn off the power and check the connector connection.

Step 2. If the connector connection is not normal, correct the connection or the connector has poor contact. If it is normal, proceed.

Step 3. 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.

Step 4. If the measured resistance of the outdoor heat exchanger temperature sensor matches the value specified in its characteristic chart, proceed. If it does not match, there is a defect in the outdoor heat exchanger temperature sensor, replace the outdoor heat exchanger temperature sensor. If the issue persists, 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.

Sensor (Thermistor) Characteristics (Reference data from chart on page 69).

Troubleshooting steps for H30 (Compressor Discharge Temperature Sensor Abnormality) on the PANASONIC CS-E15JD3EA when abnormality indication starts again:

Step 1. Check the connector connection: Turn off the power and check the connector connection.

Step 2. If the connector connection is not normal, correct the connection or the connector has poor contact. If it is normal, proceed.

Step 3. 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.

Step 4. If the measured resistance of the outdoor discharge pipe temperature sensor matches the value specified in its characteristic chart, proceed. If it does not match, there is a defect in outdoor discharge pipe temperature sensor, replace the outdoor discharge pipe temperature sensor. If the issue persists, 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 H97 (Outdoor Fan Motor DC Motor Mechanism Locked) on the PANASONIC CS-E15JD3EA when abnormality indication starts again:

Step 1. Turn off power supply and rotate fan by hand.

Step 2. If the fan does not rotate smoothly, replace the fan motor. If it rotates smoothly, proceed.

Step 3. Turn power supply on and operate fan.

Step 4. If it does not rotate, stop the fan motor. If it rotates, proceed.

Step 5. Turn off power supply and disconnect fan motor connector, then turn power on.

Step 6. Check the rotation feedback output from fan motor.

Step 7. Check the output of fan motor from indoor PCB.

Step 8. If the rotation feedback voltage 15VDC (pin 1 & 4) is not generated, proceed. If it is generated, proceed.

Step 9. If the motor power supply voltage ~325Vdc (pin 7 & 4) is not generated, replace indoor PCB. If it is generated, proceed.

Step 10. If the motor control voltage 15Vdc (pin 3 & 4) is not generated, replace indoor PCB. If it is generated, proceed.

Step 11. Operate the fan, is the rotation command voltage 1-5Vdc (pin 2 & 4) generated? If yes, replace fan motor. If no, replace indoor PCB.

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

Troubleshooting steps for H98 (Indoor High Pressure Protection) on the PANASONIC CS-E15JD3EA:

Step 1. Check the air passage. If there is any short circuit, provide sufficient air passage. If not, proceed.

Step 2. Check the indoor unit air filter. If the air filter is dirty, clean the air filter. If not dirty, proceed.

Step 3. Check the dust accumulation on the indoor unit heat exchanger. If there is dust accumulation, clean the indoor unit heat exchanger. If not accumulated, proceed.

Step 4. Check if the indoor unit heat exchanger is dirty. If it is dirty, clean the indoor unit heat exchanger. If not dirty, proceed.

Step 5. Check the 2/3 way valve. If the 2/3 way valve is closed, open the 2/3 way valve. If not closed, proceed.

Step 6. Check the indoor unit fan motor operation. If the indoor unit fan motor does not operate normally, replace the indoor unit fan motor and/or indoor unit PCB. If it operates normally, proceed.

Step 7. Check refrigerant amount. If the additional refrigerant amount filled correctly, proceed. If not filled correctly, reclaim and recharge with correct amount of refrigerant.

Step 8. Check for clogged expansion valve or strainer. If the expansion valve or strainer is clogged (ice formed), replace the expansion valve and/or strainer, Reclaim and recharge refrigerant. If not clogged, proceed.

Step 9. 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, 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 H99 (Indoor Freeze Prevention Protection: Cooling or Soft Dry) on the PANASONIC CS-E15JD3EA when abnormality indication starts again:

Step 1. Check the air passage. If there is any short circuit, provide sufficient air passage. If not, proceed.

Step 2. Check the indoor unit air filter. If the air filter is dirty, clean the air filter. If not dirty, proceed.

Step 3. Check the dust accumulation on the indoor unit heat exchanger. If there is dust accumulation, clean the indoor unit heat exchanger. If not accumulated, proceed.

Step 4. Check the 2/3 way valve. If the 2/3 way valve is closed, open the 2/3 way valve. If not closed, proceed.

Step 5. Check the indoor unit fan motor operation. If the indoor unit fan motor does not operate normally, replace the indoor unit fan motor and/or indoor unit PCB. If it operates normally, proceed.

Step 6. Check for gas leakage. If oil is oozing out from the 2/3 way valve, repair the pipe flare or union nuts, Reclaim and recharge refrigerant. If no oil oozing, proceed.

Step 7. Check for clogged expansion valve or strainer. If the expansion valve or strainer is clogged (ice formed), replace the expansion valve and/or strainer, Reclaim and recharge refrigerant. If not clogged, proceed.

Step 8. 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, 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 F11 (4-way valve Abnormality) on the PANASONIC CS-E15JD3EA when F11 indication happens:

Step 1. Check the indoor pipe temperature sensor.

Step 2. If it does not conform to the sensor characteristic chart, replace the indoor pipe temperature sensor. If it conforms, proceed.

Step 3. If the 4-way valve coil is not energized during cooling operation, replace the outdoor unit PCB. If it is energized, proceed.

Step 4. Check the continuity of the 4-way valve coil.

Step 5. If the harness is out of connector, reconnect the harness. If not out of connector, proceed.

Step 6. If the 4-way valve coil is loose, correct the 4-way valve coil. If not loose, proceed.

Step 7. Disconnect the harness from the connector. Measure the resistance between harnesses 180?

Step 8. If the resistance is OK, replace the 4-way valve coil. If the resistance is not OK, proceed.

Step 9. Measure DC voltage supply to CN-HOT (pin1 & 2) during heating operation.

Step 10. If the voltage supply to 4-way valve 2.5-4.5VDC is supplied, replace the outdoor unit PCB. If not supplied, 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 for F91 (Refrigeration Cycle Abnormality) on the PANASONIC CS-E15JD3EA when F91 indication happens:

Step 1. Check the indoor air intake and pipe temperature sensors.

Step 2. If it does not conform to the sensor characteristic chart, replace the indoor intake air or pipe temperature sensor. If it conforms, proceed.

Step 3. Check if the 2/3-way valve opened. If the 2/3-way valve is not open, open the 2/3 way valve. If it is open, proceed.

Step 4. Check for gas leaking.

Step 5. If oil is oozing out from the 2/3 way valve, repair the pipe flare or union nuts, Reclaim and recharge refrigerant. If no oil oozing, proceed.

Step 6. Check if capillary tube or dryer is clogged. If the capillary tube or dryer is clogged (ice formed), replace the capillary tube or dryer. If not clogged, proceed.

Step 7. Charge for a specified amount of fresh refrigerant.

Step 8. If the refrigerant cycle abnormality error again, replace the outdoor unit PCB & compressor. If not again, 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 F93 (Compressor Rotation Failure) on the PANASONIC CS-E15JD3EA when F93 indication happens:

Step 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.

Step 2. If the connector connection is not normal, correct the connection. If it is normal, proceed.

Step 3. Disconnect the harnesses U, V and W from the compressor terminal.

Step 4. From the disconnected harness, turn ON the power and operate the inverter checker. Check if the 6 LEDs are blinking in the same sequence/condition.

Step 5. If the 6 LEDs are blinking in the same sequence/condition, replace the compressor. If not in the same sequence/condition, check for 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 F95 (Cooling High Pressure Abnormality) on the PANASONIC CS-E15JD3EA when F95 indication happens:

Step 1. Check the outdoor air passage. If there is any short circuit, provide sufficient air passage. If not, proceed.

Step 2. Check the dust accumulation on the outdoor unit heat exchanger. If the outdoor unit heat exchanger is dirty, clean the outdoor heat exchanger. If not dirty, proceed.

Step 3. Check the 2/3 way valve. If the 2/3 way valve is closed, open the 2/3 way valve. If not closed, proceed.

Step 4. 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. If it operates normally, proceed.

Step 5. Check refrigerant amount. If the additional refrigerant amount filled correctly, reclaim and recharge with correct amount of refrigerant. If not filled correctly, proceed.

Step 6. Check for clogged expansion valve or strainer. If the expansion valve or strainer (ice formed) is clogged, replace the outdoor fan motor. If not clogged, proceed.

Step 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, 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 F96 (IPM Overheating) on the PANASONIC CS-E15JD3EA when F96 indication happens:

Step 1. Check the outdoor unit installation condition during cooling or soft dry operation.

Step 2. If there is any improper heat radiation, reinstall the outdoor unit, remove the obstacle(s), and clean the outdoor heat exchanger. If there is no improper heat radiation, proceed.

Step 3. Check if outdoor fan motor operating?

Step 4. If the outdoor fan motor is not operating, replace the outdoor fan motor. If it is operating, proceed.

Step 5. Defect in IPM, 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 F97 (Compressor Overheating) on the PANASONIC CS-E15JD3EA when F97 indication happens:

Step 1. Check the compressor tank temperature sensor.

Step 2. Does it conform to the sensor characteristic chart? If no, replace the compressor tank temperature sensor. If yes, proceed.

Step 3. Check if 2/3 way valve closed?

Step 4. If the 2/3 way valve is closed, open the 2/3 way valve. If not closed, proceed.

Step 5. Check for gas leakage.

Step 6. 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, proceed.

Step 7. Check if capillary tube or dryer clogged?

Step 8. If the capillary tube or dryer is clogged, replace the capillary tube or dryer. If not clogged, proceed.

Step 9. Charge for a specified amount of fresh refrigerant.

Step 10. If refrigerant cycle abnormality error again, replace outdoor unit PCB or replace outdoor unit compressor. If not again, 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 F98 (Input Over Current Detection) on the PANASONIC CS-E15JD3EA when F98 indication happens:

Step 1. Get restarted and measure the input current.

Step 2. If Input current is greater than 15.06A, proceed. If not, replace the outdoor unit PCB.

Step 3. Turn off power supply. Check the main circuit electrolytic capacitor.

Step 4. If the condition is Normal, repair the pipe flare or union nuts, Reclaim and recharge refrigerant. If not Normal, proceed.

Step 5. Check refrigerant amount. If there is excess refrigerant, reclaim and recharge with correct amount of refrigerant. If not excess refrigerant, 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 F99 (Output Over Current Detection) on the PANASONIC CS-E15JD3EA when F99 indication happens:

Step 1. Get restarted and measure the input current.

Step 2. If Input current is greater than 20.2A, proceed. If not, replace the outdoor unit PCB.

Step 3. 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.

Step 4. Are the compressor’s winding resistance (U-V, V-W, W-U) uniform? If yes, the compressor is defective due to winding shorted, replace the compressor. If no, proceed.

Step 5. Outdoor electronic circuit defect due to power transistor(s). Replace the outdoor unit PCB.

For 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 (-), Tester’s positive terminal to Power transistor (+).

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

The steps for detaching the Upper and Inner Casing on the indoor unit of the PANASONIC CS-E15JD3EA are:

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

The steps for detaching the Control Board on the indoor unit of the PANASONIC CS-E15JD3EA are:

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.

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.

The steps for detaching the Fan on the indoor unit of the PANASONIC CS-E15JD3EA are:

1. First detach the Upper and Inner Casing (Refer to section 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.

The steps for detaching the Fan Motor and Drain Motor on the indoor unit of the PANASONIC CS-E15JD3EA are:

For Fan Motor:

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

For Drain Motor:

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

The procedure for removing the Outdoor Electronic Controller for the PANASONIC CS-E15JD3EA involves two main steps:

Step 1. Remove the top panel and front panel (Refer to Fig. 8).

Step 2. Remove the Outdoor Electronic Controller (Refer to Fig. 9 and Fig. 10).

WARNING:

• Be sure to return the wiring to its original position.
• There are many high voltage components within the heat sink cover so never touch the interior during operation. Wait at least two minutes after power has been turned off.

Caution! When handling electronic controller, be careful of electrostatic discharge.

The check items after installation for the PANASONIC CS-E15JD3EA are: