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Troubleshooting - Panasonic WH-UD03JE5 Serie Bedienungsanleitung

Luft/wasser-wärmepumpe
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Troubleshooting

The following symptoms do not indicate malfunction.
Symptom
Water flowing sound during operation.
Operation is delayed a few minutes
after restarting.
Outdoor unit emits water/steam.
Steam comes out of the outdoor unit in
the heating mode.
Outdoor unit does not operate.
System operation switches off.
System is hard to heat up.
System does not heat up instantly.
Backup heater is automatically turned
ON when it is disabled.
Operation starts automatically when
the timer is not set.
Loud refrigerant noise continues for
several minutes.
*
*
COOL mode is unavailable.
1,
2
Check the following before calling for servicing.
Symptom
Operation in HEAT/*
*
COOL mode is
1,
2
not working efficiently.
Noisy during operation.
System does not work.
Operation LED is not lit or nothing is
displayed on the Remote Controller.
*
The system is locked to operate without COOL mode. It can be unlocked only by authorised installers or our authorised service partners.
1
*
Only displayed when COOL mode is unlocked (This means when COOL mode is available).
2
36
Cause
• Refrigerant flow inside the unit.
• The delay is a protection for the compressor.
• Condensation or evaporation occurring in the pipes.
• It is caused by defrost operation in the heat exchanger.
• It is caused by the protection control of the system when outdoor temperature is
out of the operating range.
• It is caused by the protection control of the system. When the water inlet
temperature is lower than 10 °C, the compressor stops and the backup heater
power turns on.
• When the panel and the floor are heated simultaneously, warm water temperature
may decrease, which may reduce the heating ability of the system.
• When the outdoor air temperature is low, the system may need longer time to heat
up.
• Discharge outlet or intake inlet in the outdoor unit is blocked by some obstacle,
such as a pile of snow.
• When the preset water outlet temperature is low, the system may need longer time
to heat up.
• System will take some time to heat up the water if it starts to operate at cold water
temperature.
• It is caused by the protection control of the indoor unit heat exchanger.
• Sterilization timer has been set.
• It is caused by protection control during deice operation at outdoor ambient
temperature lower than -10 °C.
• System has locked to operate in HEAT mode only.
Check
• Set the temperature correctly.
• Close the panel heater/cooler valve.
• Clear any obstruction in the air inlet and air outlet vents of the outdoor unit.
• Outdoor unit or indoor unit has been installed at an incline.
• Close the cover properly.
• Circuit breaker has tripped/activated.
• Power supply is working correctly, or a power failure has occurred.

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