ESIE17-08
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Part 2. Troubleshooting
2.2. Error based troubleshooting
15/11/18
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Version 1.1
Page 31
R32 Sky-Air RZAG-M
2.2.2.7. “F3-00” – Discharge pipe temperature abnormality
Faulty outdoor unit main PCB.
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.
Adjust the power to the outdoor main
PCB.
Replace outdoor main PCB when HAP
LED is not blinking in regular intervals.
Faulty thermistor.
Check thermistor.
Replace thermistor when required.
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 expansion valve.
Check the expansion valve.
Replace the expansion valve body or
motor when required.
Faulty capacity adapter on outdoor PCB.
Check if the correct adapter is installed.
Check if the correct spare part is installed.
Adjust capacity adapter when required.
External factory (e.g. electrical noise)
(cause when error is reset after power
reset, and error happens again after a
while).
Check for source which could cause elec-
trical interference.
Avoid electrical interference.
Trigger
Effect
Reset
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.
Unit will not stop operating.
Automatic reset when temperature drops
below C°C.
Unit will stop operating.
Manual reset via remote controller.
Possible cause
Check
Corrective action
Refrigerant shortage.
Check for refrigerant shortage. Refer to
the nameplate for the correct charge.
Charge the correct refrigerant amount
when required.
Humidity in refrigerant (ice formation in
expansion valve).
Check for humidity in the refrigerant.
In case of suspicion of humidity, recover,
vacuum and recharge with virgin refriger-
ant.
Non condensables in refrigerant.
Check for non condensables in refriger-
ant.
In case of suspicion of non condensables,
recover, vacuum and recharge with virgin
refrigerant.
Stop valve is closed.
Check if stop valve is open.
Open stop valve when required.
Faulty 4-way valve.
Check the 4-way valve.
Replace the 4-way valve coil or body
when required.
Faulty expansion valve.
Check the expansion valve.
Replace the expansion valve body or
motor when required.
Faulty outdoor unit main PCB.
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.
Restore the power to the outdoor main
PCB.
Replace outdoor main PCB when HAP
LED is not blinking in regular intervals.
Faulty discharge thermistor.
Check discharge thermistor.
Replace discharge thermistor when
required.
Faulty heat exchanger thermistor.
Check heat exchanger thermistor.
Replace heat exchanger thermistor when
required.
Faulty outdoor temperature thermistor.
Check outdoor temperature thermistor.
Replace outdoor temperature thermistor
when required.
Possible cause
Check
Corrective action
