2
|
Troubleshooting
Service manual
19
RXQ25+3 3 3
35AMV1B
Split Sensira R32 BBOP
ESIE21-16 – 2022.02
3
Perform a check of the outdoor unit fan motor. See
Possible cause:
Faulty outdoor unit fan motor.
4
Perform a check of the compressor. See
50].
Possible cause:
Faulty compressor or miswiring of the compressor power
supply cable.
Prerequisite:
Stop the unit operation via the user interface.
Prerequisite:
Turn OFF the respective circuit breaker.
5
Wait until the rectifier voltage is below 10 V DC.
DANGER: RISK OF ELECTROCUTION
Wait for at least 10 minutes after the circuit breaker has been turned OFF, to be sure
the rectifier voltage is below 10 V DC before proceeding.
6
Check that the thermal interface grease is applied properly on the (PCB or
refrigerant piping) contact surface of the heat sink. Adjust if needed.
Possible cause:
Thermal interface grease NOT applied properly on the heat
sink.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
2.5.7 E5-00 – Outdoor unit: Overheat of inverter compressor motor
Trigger
Effect
Reset
Compressor overload is
detected.
Unit will NOT stop
operating.
Automatic reset if the unit
runs without warning for
60 seconds.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1
Check that all stop valves of the refrigerant circuit are open. See
Possible cause:
Closed stop valve in the refrigerant circuit.
2
Perform
a
check
of
the
discharge
pipe
thermistor.
See
108].
Possible cause:
Faulty discharge pipe thermistor or connector fault.
3
Perform a check of the outdoor unit fan motor. See
Possible cause:
Faulty outdoor unit fan motor.
4
Perform a check of the compressor. See
50].
Possible cause:
Faulty compressor or miswiring of the compressor power
supply cable.
5
Perform a check of the expansion valve. See