F3-00" - Discharge Pipe Temperature Abnormality - Daikin R32 Sky-Air RZAG-M Service Manual

ESIE17-08 | Part 2. Troubleshooting
Possible cause
Faulty outdoor unit main PCB.
Faulty thermistor.
Faulty or disturbance of the power supply
(imbalance >10%). Power drop. Short cir-
cuit.
Faulty expansion valve.
Faulty capacity adapter on outdoor PCB.
External factory (e.g. electrical noise)
(cause when error is reset after power
reset, and error happens again after a
while).
2.2.2.7. "F3-00" – Discharge pipe temperature abnormality
Trigger
Discharge temperature is too high:
• If the discharge temperature detected
is above A°C, 10 times within 200 min.
• If within 200 min the discharge
temperature detected is 10 times
above B°C for 15 min.
Possible cause
Refrigerant shortage.
Humidity in refrigerant (ice formation in
expansion valve).
Non condensables in refrigerant.
Stop valve is closed.
Faulty 4-way valve.
Faulty expansion valve.
Faulty outdoor unit main PCB.
Faulty discharge thermistor.
Faulty heat exchanger thermistor.
Faulty outdoor temperature thermistor.
15/11/18 | Version 1.1
R32 Sky-Air RZAG-M
Check
Check if the HAP LED is blinking in regu-
lar intervals.
Check if the correct spare part is installed.
Check if the outdoor main PCB receives
power.
Check thermistor.
Check if the power supply is conform with
regulations. No fluctuations in frequency.
Check the expansion valve.
Check if the correct adapter is installed.
Check if the correct spare part is installed.
Check for source which could cause elec-
trical interference.
Effect
Unit will not stop operating.
Unit will stop operating.
Check
Check for refrigerant shortage. Refer to
the nameplate for the correct charge.
Check for humidity in the refrigerant.
Check for non condensables in refriger-
ant.
Check if stop valve is open.
Check the 4-way valve.
Check the expansion valve.
Check if the HAP LED is blinking in regu-
lar intervals.
Check if the correct spare part is installed.
Check if the outdoor main PCB receives
power.
Check discharge thermistor.
Check heat exchanger thermistor.
Check outdoor temperature thermistor.
2.2. Error based troubleshooting
Corrective action
Adjust the power to the outdoor main
PCB.
Replace outdoor main PCB when HAP
LED is not blinking in regular intervals.
Replace thermistor when required.
Adjust power supply when required.
Power reset via outdoor unit.
Replace the expansion valve body or
motor when required.
Adjust capacity adapter when required.
Avoid electrical interference.
Reset
Automatic reset when temperature drops
below C°C.
Manual reset via remote controller.
Corrective action
Charge the correct refrigerant amount
when required.
In case of suspicion of humidity, recover,
vacuum and recharge with virgin refriger-
ant.
In case of suspicion of non condensables,
recover, vacuum and recharge with virgin
refrigerant.
Open stop valve when required.
Replace the 4-way valve coil or body
when required.
Replace the expansion valve body or
motor when required.
Restore the power to the outdoor main
PCB.
Replace outdoor main PCB when HAP
LED is not blinking in regular intervals.
Replace discharge thermistor when
required.
Replace heat exchanger thermistor when
required.
Replace outdoor temperature thermistor
when required.
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