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Troubleshooting
Service manual
26
RXQ25+3 3 3
35AMV1B
Split Sensira R32 BBOP
ESIE21-16 – 2022.02
1
Perform a check of the main PCB. See
Possible cause:
Faulty main PCB.
2
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.
Prerequisite:
Stop the unit operation via the user interface.
Prerequisite:
Turn OFF the respective circuit breaker.
3
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.
4
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.
2.5.16 H6-00 – Outdoor unit: Malfunction of position detection sensor
Trigger
Effect
Reset
Compressor fails to start
within 15 seconds after
the compressor run
command signal is sent.
Unit will NOT stop
operating.
Automatic reset after a
continuous operation of
10 minutes.
If the error re-occurs
within 8 minutes: 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 compressor. See
Possible cause:
Faulty compressor or miswiring of the compressor power
supply cable.
2
Perform a check of the main PCB. See
Possible cause:
Faulty main PCB.
3
Check that all stop valves of the refrigerant circuit are open. See
120].