Daikin FTXP20-71L, Руководство по обслуживанию

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2 | Troubleshooting
Service manual
27
ATXP20~35 + FTXP20~71 + ARXP20~35 + RXP20~71
Split Comfora R32
ESIE18-01E – 2023.01
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.
2.5.17 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 "3.4 High pressure
switch" [
4
72].
Possible cause: Faulty high pressure switch.
2 Perform a check of the main PCB. See "3.7 Main PCB" [
4
84].
Possible cause: Faulty main PCB.
3 Check if the power supply is compliant with the regulations. See "4.1 Electrical
circuit" [
4
142].
Possible cause:
▪ Faulty or disturbance of the power supply (power supply MUST be within
range of nominal operating voltage ±4%),
▪ Power drop,
▪
Short circuit.