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Troubleshooting
Service manual
28
RXJ20~50A + FTXJ-A(W)(S)(B)
Split Emura 3 R32
ESIE22-04 – 2022.04
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.
3.5.20 H3-00 – Outdoor unit: Malfunction of high pressure switch
Trigger
Effect
Reset
High pressure switch is
activated when
compressor is off.
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 high pressure switch. See High pressure switch.
Possible cause:
Faulty high pressure switch.
2
Perform a check of the main PCB. See Main PCB.
Possible cause:
Faulty main PCB.
3
Check if the power supply is compliant with the regulations. See
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.
draft – 22/04/2022 08:50
