PANASONIC WH-UDZ05KE5 (01) PDF Document

When installing or servicing your PANASONIC WH-UDZ05KE5, it is crucial to follow these safety precautions to prevent serious injury or damage:

WARNINGS:

1. Only use manufacturer-recommended means to accelerate the defrosting process or to clean. Using incompatible materials may cause product damage, burst, and serious injury.

2. Do not use unspecified, modified, joint, or extension cords for the power supply. Do not share a single outlet with other electrical appliances to prevent shock or fire.

3. Do not insert fingers or other objects into the unit, as the high-speed rotating fan may cause injury.

4. Do not sit or step on the unit to avoid falling.

5. When installing or relocating the outdoor unit, do not allow any substance other than the specified refrigerant (e.g., air) to mix into the refrigerant cycle. This can cause abnormal high pressure, leading to explosion and injury.

6. Do not pierce or burn the appliance as it is pressurized. Do not expose it to heat, flame, sparks, or other ignition sources, as it may explode.

7. Do not add or replace refrigerant other than the specified R32 type. This can cause product damage, burst, and injury.

8. For electrical work, adhere to national regulations, legislation, and these installation instructions. An independent circuit and a single outlet must be used.

9. This equipment is strongly recommended to be installed with a Residual Current Device (RCD) on-site, according to national wiring rules.

10. During installation, install the refrigerant piping properly before running the compressor to prevent explosion or injury.

11. During a pump-down operation, stop the compressor before removing the refrigeration piping.

12. After installation, confirm there is no leakage of refrigerant gas. It may generate toxic gas if it contacts fire.

13. This equipment must be properly earthed. The earth line must not be connected to a gas pipe, water pipe, lightning rod, or telephone earth.

CAUTIONS:

1. Do not install the unit where leakage of flammable gas may occur, as it may cause a fire.

2. Do not release refrigerant during piping work for installation, re-installation, and repairs. Take care of liquid refrigerant to avoid frostbite.

3. Do not install this appliance in a laundry room or other high-humidity location, which can cause rust and damage.

4. Ensure the insulation of the power supply cord does not contact hot parts (e.g., refrigerant piping, water piping).

5. Do not touch the sharp aluminum fins, as sharp parts may cause injury.

6. Carry out drainage piping as mentioned in the installation instructions to prevent water damage to furniture.

The PANASONIC WH-UDZ05KE5 uses R32 refrigerant. While the basic installation procedures are similar to conventional models (R410A, R22), you must pay careful attention to the following points:

General Precautions:

1. Specialized Tools: The working pressure of R32 is higher than R22. Some piping, installation, and service tools are special. When replacing an R22 model, you must always replace the conventional piping and flare nuts with R32/R410A-specified parts.

2. No Mixing Refrigerants: Mixing different refrigerants within a system is prohibited. R32 and R410A models have a different charging port thread diameter (1/2 inch or 12.7 mm) to prevent accidental charging with R22.

3. Prevent Contamination: Ensure that foreign matter like oil and water does not enter the piping. Securely seal piping openings when storing.

4. Certified Personnel: Operation, maintenance, repair, and refrigerant recovery must be carried out by trained and certified personnel experienced in the use of flammable refrigerants.

5. Leak Testing: To ensure no leaks, field-made refrigerant joints indoors must be tightness tested. The test method must have a sensitivity of 5 grams per year of refrigerant or better under a pressure of at least 0.25 times the maximum allowable pressure (>1.04MPa, max 4.15MPa). No leak should be detected.

Installation Space & Servicing:

• Pipe-work: Keep pipe-work installation to a minimum. Avoid using dented pipes and do not allow sharp bends. Protect pipe-work from physical damage.

• Ventilation: In cases requiring mechanical ventilation, ensure ventilation openings are kept clear of obstruction.

• Service Personnel: Only qualified persons with a valid certificate from an industry-accredited assessment authority should work on the refrigerant circuit.

• Work Procedures: Work must be undertaken under a controlled procedure to minimize the risk of a flammable gas or vapor being present. Avoid working in confined spaces and ensure a safety distance of at least 2 meters from any ignition source.

• Leak Detection: The work area must be checked with an appropriate refrigerant detector before and during work. Ensure the detection equipment is suitable for flammable refrigerants (non-sparking, adequately sealed, or intrinsically safe).

• No Ignition Sources: Keep all possible ignition sources, including cigarette smoking, away from the site of installation, repair, removal, and disposal. “No Smoking” signs must be displayed.

• Charging Procedures: Use appropriate recovery cylinders and earthed charging equipment. Label the system when charging is complete. Take extreme care not to overfill the system.

• Decommissioning: Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment. It is good practice that all refrigerants are recovered safely. The equipment must be labeled stating it has been de-commissioned and emptied of refrigerant.

The PANASONIC WH-UDZ05KE5 Air-to-Water Hydromodule + Tank system includes the following features:

• Inverter Technology: Provides energy savings.

• High Efficiency: Ensures optimal performance.

• Environment Protection: Uses non-ozone depleting R32 refrigerant.

• Long Installation Piping: Allows for long piping up to 50 meters with a height difference of 30 meters.

• Easy to use control panel: Features Auto mode, Holiday mode, Dry concrete function, and a Weekly timer setting.

• A-class energy efficiency pump: Water pump speed can be set via the control panel.

• Improved deice cycle: For better performance in cold conditions.

• Protection Features: Includes random auto restart after power failure, gas leakage protection, compressor reverse cycle prevention, and an inner protector for the compressor.

• Serviceability Features: Equipped with a Breakdown Self Diagnosis function, System Status Check Buttons, and a System Pumpdown Button for servicing purposes.

The remote controller for your PANASONIC WH-UDZ05KE5 features several buttons for operation. Here is a guide to their functions:

Display Icons:

• Mode selection (A): Shows the current operating mode (e.g., HEAT, TANK, AUTO).

• Operation icons (B): Displays the status of various functions like Holiday mode, Quiet mode, and Weekly Timer.

• Temperature of each zone (C): Shows the temperature for different heating zones.

• Time and day (D): Displays the current time and day.

• Water Tank temperature (E): Shows the temperature of the water tank.

• Outdoor temperature (F): Shows the outdoor ambient temperature.

• Sensor type/Set temperature type icons (G): Indicates the type of temperature control being used (e.g., Compensation curve, Direct, Room Thermostat).

When you turn on the power for the first time, the remote controller will automatically enter the initial setup mode. Follow these steps:

1. Selecting the Language

1. Wait for the display to initialize. When the initializing screen ends, press any button to bring up the language setting screen.

2. Use the Up and Down arrow buttons to scroll through the available languages.

3. Press the Enter button to confirm your selection.

2. Setting the Clock

1. After setting the language, the “Clock format” screen will appear.

2. Use the Up or Down arrow to select either 24h or am/pm format.

3. Press Enter to confirm.

4. The “Date & Time” screen will appear. Use the Up/Down arrows to select the year, month, day, hour, and minutes. Use the Right/Left arrows to move between fields.

5. Press Enter to confirm each selection as you set it.

3. Front Grille Safety Check

1. A final screen will ask, “Is O/D front grille fixed?”. This is a safety precaution.

2. If the outdoor unit’s front grille is securely fixed, select “Yes” and press Enter. The controller will proceed to the main screen.

3. If the front grille is not yet fixed, select “No”. A caution message will appear reminding you to fix the grille before operation. Press Close. You must fix the grille before proceeding.

The Quick Menu provides fast access to common functions. To use it:

1. Press the Quick Menu button (button with three dots) to display the Quick Menu screen.

2. Use the Up, Down, Left, and Right arrow buttons to navigate and select a function icon.

3. Press the Enter button to turn the selected function ON or OFF, or to enter its setup screen. Follow the on-screen instructions at the bottom of the display.

The following functions are available in the Quick Menu:

• Force DHW: Manually turns the Domestic Hot Water tank heating on or off.

• Powerful: Operates the system powerfully for 30, 60, or 90 minutes for faster heating/cooling.

• Quiet: Operates the outdoor unit quietly at one of three levels. You can also set a timer for Quiet mode operation.

• Force Heater: Manually forces the backup heater to turn on.

• Weekly Timer: Allows you to set or cancel the weekly operating schedule.

• Force Defrost: Manually initiates a defrost cycle for the outdoor unit’s frozen pipes.

• Error Reset: Restores previous settings after an error has occurred.

• R/C Lock: Locks the remote controller to prevent accidental changes. A password can be set.

To return to the main screen from the Quick Menu, press the Back button or the Quick Menu button again.

You can view the most recent error codes recorded by the system. Follow these steps:

1. Press the Main Menu button on the remote controller.

2. Use the arrow buttons to scroll down and select “System check”. Press Enter.

3. In the System check menu, select “Error history”. Press Enter.

4. The display will show the last four errors that have been recorded by the system, along with the date and time they occurred.

To Clear the Error History:

1. In the “Error history” screen, you will see an option to “Clear history”.

2. Select “Clear history” and press Enter.

3. A confirmation message will appear asking, “Do you want to clear error history?”. Select “Yes” and press Enter to permanently delete all stored error codes.

The H20 error code indicates a water pump abnormality on your PANASONIC WH-UDZ05KE5. The system has detected an abnormal rotation speed from the water pump (either greater than 6,000 rpm or less than 1,000 rpm) during operation.

Possible Causes:

1. A short circuit or broken wire inside the water pump motor winding.

2. Broken water pump lead wires.

3. Malfunction of the water pump’s internal IPM (Intelligent Power Module).

4. A faulty indoor unit PCB.

Troubleshooting Steps:

For safety, always turn off the power before disconnecting or connecting any components.

1. Check Power and Operation: Turn on the power and try to operate the water pump. Does it operate at all?

2. Check Connections: If it does not operate, turn off the power. Check the water pump connector for a poor or loose connection. Correct it if necessary.

3. Check Voltages (For qualified personnel only):

• Disconnect the CN-PUMP1 connector and check the input voltage from the indoor unit PCB. The drive power supply (pins 1 & 4) should be between 280-373 Vdc.

• Check the control power supply (pins 5 & 4), which should be 15 Vdc.

• If voltages are incorrect, the indoor unit PCB is likely faulty and needs replacement.

4. Check Feedback Signal: If voltages are correct but the pump still doesn’t operate correctly, check if a feedback signal (pulse) is being generated between pins 7 & 4 of the CN-PUMP1 connector while trying to operate the pump. If no signal is generated, the water pump is likely faulty. If a signal is present but the error persists, the indoor unit PCB may be faulty.

If you are not comfortable performing these checks, please contact a qualified service technician.

The Pump Down procedure collects the refrigerant from the system back into the outdoor unit. This is necessary for servicing or relocating the unit.

WARNING: Strictly follow these steps in sequence. Failure to do so may result in an explosion.

Procedure:

1. When the PANASONIC WH-UDZ05KE5 unit is in standby mode (not operating), navigate to the “Service setup” menu on the remote controller.

2. Select “Pump down” and turn it ON to start the procedure. The display will show “Pump down operation in progress!”.

3. After 10-15 minutes (or 1-2 minutes in very low ambient temperatures below 10°C), fully close the 2-way valve (liquid side) on the outdoor unit.

4. Wait for 3 minutes, then fully close the 3-way valve (gas side) on the outdoor unit.

5. Press the “ON/OFF” button on the remote controller to stop the pump down operation.

6. You can now safely remove the refrigerant piping.

You can check the system’s water pressure directly from the remote controller. This is useful for ensuring the system is operating within the correct parameters.

1. From the main screen, press the Main Menu button.

2. Use the arrow keys to scroll to “System check” and press Enter.

3. In the “System check” menu, scroll to “System information” and press Enter.

4. Use the Down arrow to scroll through the pages of system information until you find the “Water pressure” reading.

For normal operation, the water pressure should be between 0.05 MPa and 0.3 MPa (0.5 bar and 3 bar).

Regular maintenance of the Magnetic Water Filter Set ensures optimal performance of your PANASONIC WH-UDZ05KE5. Follow these steps:

1. Turn OFF the main power supply to the unit.

2. Place a container below the Magnetic Water Filter Set.

3. Turn the Magnet Bar at the bottom of the filter set to remove it.

4. Using an 8mm Allen key, remove the Cap of the Discharge Port.

5. Using a 4mm Allen key, open the Service Valve to release dirty water from the Discharge Port into the container. Close the valve if the container becomes full to avoid spillage, dispose of the dirty water, and repeat as necessary.

6. Once drained, reinstall the Cap of the Discharge Port and the Magnet Bar.

7. Re-charge the water to the Space Heating / Cooling circuit if necessary.

8. Turn ON the power supply.