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Troubleshooting
Service manual
22
RXQ25+3 3 3
35AMV1B
Split Sensira R32 BBOP
ESIE21-16 – 2022.02
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1
Check the outdoor temperature. See
Possible cause:
Outdoor temperature is out of operation range.
2
Perform a check of the compressor. See
Possible cause:
Faulty compressor or miswiring of the compressor power
supply cable.
3
Perform a check of the main PCB. See
Possible cause:
Faulty main PCB.
4
Check if the power supply is compliant with the regulations. See
118].
Possible cause:
▪
Faulty or disturbance of the power supply (power supply MUST be within
range of nominal operating voltage ±4%),
▪
Power drop,
▪
Short circuit.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
2.5.11 EA-00 – Outdoor unit: Cool/heat switchover problem
Trigger
Effect
Reset
Room thermistor is NOT
functioning within
operation range.
Unit will NOT stop
operating.
Automatic reset after a
continuous operation for
some time.
If the error occurs too
soon: unit will stop
operating.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1
Perform a check of the 4‑way valve. See
44].
Possible cause:
Faulty 4‑way valve.
2
Perform a check of the main PCB. See
Possible cause:
Faulty main PCB.
3
Perform a check of the indoor unit air (room) thermistor. See
Possible cause:
Faulty indoor unit air (room) thermistor.
4
Perform a check of the indoor unit main PCB. See