A5-00" - Freeze-Up Protection / Heating Peak Cut Control; A6-00" - Fan Motor Abnormality - Daikin FTXTA30AW Service Manual

ESIE17-19C | Part 2. Troubleshooting
Possible cause
Indoor Unit - Electrical components
Faulty indoor PCB.
2.2.1.4. "A5-00" – Freeze-up protection / Heating peak cut control
Trigger
• during cooling operation, indoor heat
exchanger temperature is below 0°C
(freeze-up protection control).
• during heating operation, indoor heat
exchanger is above 61°C (heating
peak-cut control).
Possible cause
Air short-circuit.
Clogged air filter.
Dust accumulation on indoor heat
exchanger.
Faulty indoor heat exchanger thermistor.
Faulty indoor PCB.
2.2.1.5. "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.
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Optimized Heating 4
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
Unit will stop operating.
Check
Check if the airflow around the unit is OK
and there are no obstructions.
Check if the air filter is clogged.
Check if indoor heat exchanger is
dirty/dusty.
Check indoor heat exchanger thermistor.
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
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.
2.2. Error based troubleshooting
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
Automatic reset when temperature is
within range.
Corrective action
Remove obstruction.
Clean the air filter.
Clean the indoor heat exchanger.
Replace indoor heat exchanger thermistor
when required.
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 via outdoor 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.
19/08/19 | Version 1.1