PANASONIC WH-ADC0309K3E5B (01) PDF Document

The service information for the PANASONIC WH-ADC0309K3E5B is intended for experienced repair technicians only and not for the general public. Products powered by electricity should only be serviced by qualified professionals to avoid serious injury or death.

IMPORTANT SAFETY NOTICE:

This equipment contains special safety components marked by the symbol Δ in diagrams and parts lists. These critical parts must be replaced with the manufacturer’s specified parts to prevent shock, fire, or other hazards. Do not modify the original design without the manufacturer’s permission.

PRECAUTION OF LOW TEMPERATURE:

To prevent frostbite, ensure there is no refrigerant leakage during the installation or repair of the refrigerant circuit.

CAUTION – R32 REFRIGERANT:

This Air-to-Water Hydromodule + Tank contains and operates with refrigerant R32. THIS PRODUCT MUST ONLY BE INSTALLED OR SERVICED BY QUALIFIED PERSONNEL. Always refer to national, state, territory, and local legislation, regulations, codes, and manuals before installation, maintenance, or service.

Before installation, carefully read and follow all safety precautions. Electrical and water installation work must be performed by licensed professionals. Incorrect installation can cause harm or damage.

WARNINGS (Possibility of causing death or serious injury):

CAUTIONS (Possibility of causing injury or damage to properties):

The basic installation procedures are the same as for conventional refrigerants (R410A, R22), but you must pay careful attention to the following points due to the properties of R32.

WARNINGS:

Since the working pressure of R32 is higher than R22, some piping, installation, and service tools are special. When replacing an R22 model with a new R32 model, you must replace the conventional piping and flare nuts.

Mixing different refrigerants is prohibited. R32 and R410A models have a different charging port thread diameter (12.7 mm or 1/2 inch) for safety.

Ensure that foreign matter (oil, water, etc.) does not enter the piping. Seal piping openings securely when storing.

Operation, maintenance, repair, and refrigerant recovery must be carried out by trained and certified personnel.

Any part of the refrigerating circuit or piping should not be located near heat sources, open flames, or operating gas/electric appliances.

The user/owner must regularly check alarms, mechanical ventilation, and detectors at least once a year.

A logbook of these checks must be maintained.

Before a new system is put into service, operating personnel must be instructed on its construction, supervision, operation, maintenance, and safety measures.

To ensure no leaking, field-made refrigerant joints indoors must be tightness tested. The test method should have a sensitivity of 5 grams per year of refrigerant or better.

CAUTIONS:

Ensure the installation of pipe-work is kept to a minimum, protected from physical damage, and complies with all national and local regulations.

Servicing must be performed by qualified personnel as recommended by the manufacturer. Prior to working on systems with flammable refrigerants, safety checks are necessary to minimize the risk of ignition.

Work should be done under a controlled procedure, avoiding confined spaces, and keeping all ignition sources away.

The work area must be checked with an appropriate refrigerant detector before and during work.

If hot work is conducted, appropriate fire extinguishing equipment (dry powder or CO2) must be available.

“No Smoking” signs shall be displayed, and all ignition sources (including cigarette smoking) must be kept far from the site.

The area must be open or adequately ventilated before and during any work.

Inverter Technology: Energy saving.

High Efficiency

Environment Protection: Uses non-ozone depleting R32 refrigerant.

Long Installation Piping: Supports long piping up to 25 meters (UDZ03KE5) or 50 meters (UDZ05/07/09KE5) with a height difference of 20 meters (UDZ03KE5) or 30 meters (UDZ05/07/09KE5).

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

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

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

When the power is turned on for the first time, the remote controller will automatically enter the setup screen. You need to select the language and set the date and time.

Selecting the language:

1. The display will show “Initializing…”. Once complete, press any button to bring up the language setting screen.

2. Scroll with the up and down arrow buttons to select your desired language.

3. Press the enter button (often a square or circle symbol) to confirm your selection.

Setting the clock:

1. Select either a 24h or am/pm time format using the up or down arrow buttons.

2. Press the enter button to confirm.

3. Use the up and down arrow buttons to select the year, month, day, hour, and minutes. Use the left and right arrow buttons to move between fields. Press the enter button to confirm each selection.

4. Once set, the time and day will appear on the display even when the controller is off.

Final Precaution Step:

1. A screen will ask, “Is O/D front grille fixed?”. This is a safety check for the outdoor unit.

2. Select “Yes” if the outdoor unit’s front grille is already fixed. The controller will proceed to the main screen.

3. Select “No” if the grille is not yet fixed. A caution message will appear reminding you to fix the grille before operation. Press “Close” on the caution message.

After the initial setup, you can use the Quick Menu for fast access to common functions.

1. Press the Quick Menu button (often represented by three dots or lines) to display the menu.

2. Use the arrow keys to navigate and select an icon (e.g., Force DHW, Powerful, Quiet).

3. Press the enter button to turn the selected function on or off. The icons at the bottom of the screen correspond to the action keys.

Quick Menu Functions:

Force DHW: Turns the Tank Domestic Hot Water (DHW) on or off. Note: This is disabled if Force Heater is on.

Powerful: Operates the heating/cooling system at maximum power for a set duration (30, 60, or 90 minutes). The operation starts about 1 minute after pressing the button.

Quiet: Operates the system quietly. You can select levels 1-3 (level 3 is the quietest) or set a timer for quiet operation.

Force Heater: Forces the backup heater to turn on.

Weekly Timer: Activates or deactivates the pre-set weekly timer schedule.

Force Defrost: Manually starts a defrost cycle for frozen pipes.

Error Reset: Restores previous settings after an error has occurred. Ensure all units are off before selecting.

R/C Lock: Locks the remote controller to prevent changes. To unlock, press any key and enter the 4-digit password. To reset a forgotten password, press the Quick Menu, Back, and Down arrow buttons simultaneously for 5 seconds while the unit is off.

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

The pump down procedure collects refrigerant in the outdoor unit. This is typically done before moving the unit or performing service on the refrigerant lines.

1. From the main menu, navigate to “Installer setup” -> “Service setup”.

2. Select “Pump down” and change the status from OFF to ON.

3. Confirm the selection. The screen will display “Pump down operation in progress!”.

4. This will run the compressor to move the refrigerant into the outdoor unit. After the procedure is complete, you can safely work on the system.

Important: Follow the detailed steps in the installation manual for closing the service valves on the outdoor unit at the correct times during this process to avoid damage or injury.

By default, the cooling function may be locked. To unlock it, follow these steps:

1. Ensure the system operation is turned OFF.

2. Press and hold the Menu, Up Arrow, and Down Arrow buttons simultaneously for 5 seconds.

3. The “Custom menu” will appear. “Cool mode” will be the first option.

4. The current status (e.g., “Disable”) will be shown. Press the Enter button.

5. Use the arrow keys to select “Enable”.

6. Press the Enter button to confirm.

7. The Cool Mode is now unlocked and will be available in the mode selection options.

This procedure resets the unit’s memory to its factory default settings. This should only be done if necessary and is only possible during the initial startup process.

1. While the remote controller is in the “Initializing…” phase (the first screen that appears after powering on), press the Menu, Up Arrow, Down Arrow, and Operate (ON/OFF) buttons simultaneously and hold for 5 seconds.

2. The initialization process will stop, and the display will show “EEPROM setup.”

3. The process will run automatically. The display will show “EEPROM setup . . .” as it completes.

4. Once the EEPROM reset is complete, the initialization process will restart from the beginning, prompting you to select a language.

The Dry Concrete function is used to provide heat to floor heating panels to help dry wet concrete during installation. You can set a schedule for up to 99 days with different target temperatures for each day.

How to set up:

1. Go to “Installer setup” -> “Service setup”.

2. Select “Dry concrete”.

3. To begin, you will be in [Screen 4]. Navigate to “Dry concrete” and select it.

4. In [Screen 5], you will see options for ON, OFF, and Edit. Select “Edit”.

5. You will be prompted to select the total number of stages (days) for the drying process (Range 1-99).

6. After setting the number of stages, you will set the target temperature for Stage 1/xx (e.g., Stage 1/10). The temperature range is 25°C-55°C.

7. After setting the temperature for the first stage, you can move to the next stage (e.g., 2/10) and repeat the process until all stages are programmed.

8. Once all stages are set, go back to [Screen 5] and select “ON” to start the dry concrete function.

Operation:

Once started, the remote will send the Step 1 temperature to the indoor unit, and the heat pump will operate in heat mode to achieve that target water temperature.

Each subsequent day at 12:00 AM, the data for the next stage will be sent to the indoor unit.

The function completes when the last programmed day is finished or if it is manually canceled by receiving an OFF signal.

Regular maintenance ensures the optimal performance of your system. Follow these steps to clean the magnetic water filter:

1. Turn OFF the power supply.

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 into the container. Close the valve when the container is full to avoid spillage, dispose of the dirty water, and repeat if necessary.

6. Reinstall the Cap of the Discharge Port and the Magnet Bar.

7. If necessary, re-charge the water to the Space Heating / Cooling circuit.

8. Turn ON the power supply.

When the system detects an abnormality, it will stop operation, the OFF/ON control panel LED will blink, and an error code will be displayed on the remote controller screen (e.g., “H12”). The error code is stored in the system’s memory. To check the error, navigate to “System check” > “Error history” on the remote controller. This will display the last 4 errors that occurred.

Error Codes Table:

This is a partial list. For a complete list of codes and detailed troubleshooting flowcharts, please refer to the “Troubleshooting Guide” section of the PDF.

To remove the front plate for servicing, please follow these steps:

1. Remove the 2 mounting screws located at the bottom of the Front Plate.

2. Slide the plate upwards to unhook it from the Bottom Front Plate hook.

3. To re-install, reverse the above steps.

CAUTION: Open and close the Front Plate carefully. The plate is heavy and may cause injury if not handled properly.