Troubleshooting - Panasonic WH-MDF09C3E5 Operating Instructions Manual

TROUBLESHOOTING

The following symptoms do not indicate malfunction. The following symptoms do not indicate malfunction.
SYMPTOM SYMPTOM
Flowing sound during operation.
Operation is delayed a few minutes after restart.
Mono bloc unit emits water/steam.
Mono bloc unit emits steam during heating mode.
Mono bloc unit does not operate.
(Mono bloc) Air-to-water Heatpump system operation will
turn off.
System diffi cult to heat-up.
System cannot get warm instantly.
Operation starts after power resumes.
Check the following before calling for servicing. Check the following before calling for servicing.
SYMPTOM SYMPTOM
Heating operation is not working effi ciently.
Noisy during operation.
The unit does not work.
Operation LED is no lit or remote control display is blank.
The operation LED blinks and error code appear on remote control display. The operation LED blinks and error code appear on remote control display.
TIMER
• Turn the unit off and reveal the error code to authorized dealer.
TIMER
1 2 3 4 5 6
MONTUEWEDTHU FRI SAT SUN
• Timer operation cancel when error code occur.
ON
OFF
Force Heater Mode Button Force Heater Mode Button
• In case of a failure of the (Mono bloc) Air-to-Water Heatpump system, the backup heater can be
FORCE
• Press
• During Force Heater mode, all other operations are not allowed.
used to heat up the heating water. Press
OFF / ON
to stop the force heater operation.
► • Refrigerant fl ow inside the unit.
► • The delay is a protection to the unit's compressor.
► • Condensation or evaporation occurs on pipes.
► • This is due to defrost operation happens at the heat
exchanger.
► • When the outdoor temperature is out of the operation
condition range, the heatpump system enter protection
control.
► • If mono bloc unit water inlet temperature is lower than 20°C.
Backup heater power will turn on to heat up the water.
► • When heating is operated together with fl oor heating or
panel heater simultaneously, there may be case where
warm water temperature is getting lower and cause fl oor
heating or panel heater heat-up is weaken.
• When outdoor air temperature is low, it may be diffi cult to
get warm.
• Is the snow pile blocking the discharge outlet or intake
inlet of mono bloc unit.
• When water outlet set temperature is low, it may be
diffi cult to get warm.
► • Due to the nature of the heatpump system, it may take
some time to heat-up the water if the unit is operated
from cold-start.
► • Unit is operates under auto restart function.
► • Set the temperature correctly.
• Is the panel heater valve closed.
• Clear any obstruction at the air inlet and air outlet vents
of mono bloc unit.
► • Check if the unit has been installed at an incline or the
cover is not closed properly.
► • Check if the circuit breaker is tripped.
► • Is the power supply off or power failure.
FORCE
to switch on the backup heater.
CAUSE CAUSE
CHECK CHECK
9