Troubleshooting - Panasonic WH-SDF07C3E5 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.
Outdoor unit emits water/steam.
Outdoor unit emits steam during heating mode.
Outdoor unit does not operate.
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 control panel display
is blank.
The operation LED blinks and error code appear on control panel display. The operation LED blinks and error code appear on control panel display.
TIMER
TIMER • Turn the unit off and reveal the error code to authorized dealer.
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 Air-to-Water Heatpump system, the backup heater can be used to heat
FORCE
• Press
• During Force Heater mode, all other operations are not allowed.
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 indoor unit water inlet temperature is lower than 20°C.
Backup heater power will turn on to heat up the water.
► • When heating is operated by indoor unit 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 outdoor 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 outdoor 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