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TROUBLESHOOTING
TROUBLESHOOTING
The following symptoms do not indicate malfunction.
The following symptoms do not indicate malfunction.
Symptom
Symptom
Water fl owing 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.
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
• Turn the unit off and reveal the error code to authorized dealer.
8
Cause
Cause
• 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.
• 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.
• Auto restart is in function and operates under.
Check
Check
• 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.
C
C
WATER INLET
ERROR
C
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