ESIE16-02K
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Part 2. Troubleshooting
2.2. Error based troubleshooting
31/05/21
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Version 1.1
Page 29
RA R32 Split & multi split M-Series
2.2.2.6. “E8-00” – Compressor overcurrent detection
2.2.2.7. “EA-00” – 4-way valve abnormality
Trigger
Effect
Reset
When the compressor is running the cur-
rent exceeds 9.25 A ~ 20 A (depending on
the unit) for 2.5 seconds.
Unit will stop operating.
Manual reset via user interface.
Possible cause
Check
Corrective action
Outdoor temperature is out of operation
range.
Check the outdoor temperature.
Wait until the temperature is within opera-
tion range.
Faulty compressor.
Check compressor.
Check connections and wiring of the com-
pressor.
Check expansion valve (liquid back
issue).
Check the refrigerant charge. Refer to the
nameplate for correct charge.
Replace compressor when required.
Investigate reason of breakdown.
Replace expansion valve when required.
Fix possible leak.
Faulty power module.
= Faulty inverter PCB.
Check outdoor inverter PCB.
Check if the HAP LED is blinking in regu-
lar intervals.
Check if the correct spare part is installed.
Restore the power to the outdoor inverter
PCB.
Replace the outdoor inverter PCB 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.
Trigger
Effect
Reset
The room thermistor / indoor heat
exchanger are not functioning within oper-
ation range.
Unit will not stop operating.
Automatic reset when unit runs without
error for 60 minutes.
Unit will stop operating.
Manual reset via user interface.
Possible cause
Check
Corrective action
Faulty 4-way valve coil.
Check 4-way valve coil.
Replace 4-way valve coil when required.
Faulty 4-way valve body, blocked.
Check 4-way valve body.
Replace 4-way valve body 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 room thermistor.
Check room thermistor.
Replace room thermistor when required.
Faulty indoor heat exchanger thermistor.
Check indoor heat exchanger thermistor.
Replace indoor heat exchanger thermistor
when required.
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 stop valve.
Open stop valve when required.
Faulty stop valve.
Check the stop valve.
Replace the stop valve when required.
