ESIE16-02B | Part 2. Troubleshooting 2.2. Error based troubleshooting
Page 22 4/04/17 | Version 1.1
RA R32 Split & multi split M-Series
2.2.1.3. “A5-00” – Freeze-up protection / Heating peak cut control
2.2.1.4. “A6-00” – Fan motor abnormality
More info:
Trigger Effect Reset
• during cooling operation, indoor heat
exchanger temperature is below 0°C
(freeze-up protection control).
• during heating operation, indoor heat
exchanger is above 65°C (heating
peak-cut control).
Unit will stop operating. Automatic reset when temperature is
within range.
Possible cause Check Corrective action
Air short-circuit. Check if the airflow around the unit is OK
and there are no obstructions.
Remove obstruction.
Clogged air filter. Check if the air filter is clogged. Clean the air filter.
Dust accumulation on indoor heat
exchanger.
Check if indoor heat exchanger is
dirty/dusty.
Clean the indoor heat exchanger.
Faulty indoor heat exchanger thermistor. Check indoor heat exchanger thermistor. Replace indoor heat exchanger thermistor
when required.
Faulty indoor PCB. Check if error still occurs after turning off
power and turning it back on again.
Check if the indoor PCB receives power.
Check if the HAP LED is blinking in regu-
lar intervals.
Check if the correct spare part is installed.
Check the wiring to indoor PCB.
Adjust power to the indoor PCB.
Replace indoor PCB when HAP LED is
not blinking in regular intervals.
Install correct spare part or update indoor
PCB.
Adjust wiring to indoor PCB when
required.
Trigger Effect Reset
The rotation speed of the fan motor is not
detected while the output voltage to the
fan is at its maximum.
Unit will stop operating. Power reset via outdoor unit.
Possible cause Check Corrective action
Faulty indoor PCB. Check if error still occurs after turning off
power and turning it back on again.
Check if the indoor PCB receives power.
Check if the HAP LED is blinking in regu-
lar intervals.
Check if the correct spare part is installed.
Check the wiring to indoor PCB.
Adjust power to the indoor PCB.
Replace indoor PCB when HAP LED is
not blinking in regular intervals.
Install correct spare part or update indoor
PCB.
Adjust wiring to indoor PCB when
required.
Faulty indoor fan motor. Check the fan motor.
Check fan motor connections and wiring.
Replace fan motor when required.
Adjust wiring when required.
Indoor fan motor locked. Switch of the power.
Turn fan manually.
Replace fan motor when the fan does not
turn smoothly.
Check procedures Replacing procedures
"Fan motor" on page 44
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