ESIE16-02B | Part 2. Troubleshooting 2.2. Error based troubleshooting
4/04/17 | Version 1.1 Page 21
RA R32 Split & multi split M-Series
2.2.1. Indoor unit
2.2.1.1. “A1-00” – PCB abnormality
2.2.1.2. “A1-01” – PCB abnormality
Trigger Effect Reset
The system cannot set the internal set-
tings
Unit will stop operating. Power reset via outdoor unit.
Possible cause Check Corrective action
Wrong models interconnected Check if unit combination is official.
Refer to ‘Combination database’.
Install compatible models.
Faulty wiring. Check the connection of all terminals by
disconnecting and reconnecting all termi-
nals.
Replace wire harness/terminal when con-
nection is not OK.
Faulty or disturbance of the power supply
(imbalance > 10%). Power drop. Short cir-
cuit.
Check if the power supply is conform with
regulations. No fluctuations in frequency.
Adjust power supply when required.
Power reset via outdoor unit.
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 system cannot set the internal set-
tings
Unit will stop operating. Power reset via outdoor unit.
Possible cause Check Corrective action
Wrong models interconnected Check if unit combination is official.
Refer to ‘Combination database’.
Install compatible models.
Faulty wiring. Check the connection of all terminals by
disconnecting and reconnecting all termi-
nals.
Replace wire harness/terminal when con-
nection is not OK.
Faulty or disturbance of the power supply
(imbalance > 10%). Power drop. Short cir-
cuit.
Check if the power supply is conform with
regulations. No fluctuations in frequency.
Adjust power supply when required.
Power reset via outdoor unit.
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.