A1-01" - Pcb Abnormality; A6-00" - Fan Motor Abnormality; A8-00" - Power Supply Malfunction - Daikin Modular L Smart Service Manual

ESIE19-06 | Part 2. Troubleshooting
2.2.1.5. "A1-01" – PCB abnormality
Trigger
EEPROM data is not received correctly.
Possible cause
HRV unit - Electrical components
Faulty indoor PCB.
2.2.1.6. "A6-00" – Fan motor abnormality
Trigger
The rotation speed of the fan motor is not
detected while the output voltage to the
fan is at its maximum.
Possible cause
Faulty indoor PCB.
Faulty indoor fan motor.
Indoor fan motor locked.
2.2.1.7. "A8-00" – Power supply malfunction
Trigger
Power supply at main PCB is not correct.
Possible cause
Power supply is not correct.
21/01/20 | Version 1.1
Modular L Smart
Effect
Unit will stop operating.
Check
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.
Effect
Control will perform some retry to operate
fan motor.
When retries fail, unit will stop operating.
Check
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.
Check the fan motor.
Check fan motor connections and wiring.
Switch off the power.
Turn fan manually.
Effect
Unit will stop operating.
Check
Voltage & frequency within tolerance.
Correct contact circuit breaker.
Correct cable specification.
2.2. Error based troubleshooting
Reset
Power reset via HRV unit.
Corrective action
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.
Reset
Power reset HRV unit.
Corrective action
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.
Replace fan motor when required.
Adjust wiring when required.
Replace fan motor when the fan does not
turn smoothly.
Reset
Power reset HRV unit.
Corrective action
Adjust power supply.
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