Daikin Perfera RXM20R, Service Manual

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3 | Troubleshooting
Service manual
40
RXM20~71R(9) + ARXM25~71R(9) + FTXM20~71R + ATXM25~50R +
FVXM25~50A
Split New Perfera R32
ESIE20-11B – 2022.02
2 Perform a check of the power supply, connections, wiring,… between the
outdoor unit and the indoor unit. See
"5.1 Electrical circuit" [
4
205].
Possible cause: Faulty wiring between the outdoor unit and the indoor unit.
3 Perform a check of the main PCB. See "4.12 Main PCB" [ 4 125].
Possible cause: Faulty main PCB.
4 Perform a check of the indoor unit main PCB. See "4.9 Indoor unit main
PCB" [
4
106].
Possible cause: Faulty indoor unit main PCB.
5 Perform a check of the indoor unit power PCB. See "4.10 Indoor unit power
PCB" [
4
112].
Possible cause: Faulty indoor unit power PCB.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
3.5.33 UH-00 – Malfunction of system
Trigger Effect Reset
In case of connection with
multi indoor units, when
error UA, U0 or A5 occurs
in other indoor unit. Unit will stop operating. Auto reset.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Check all other indoor units for the following error codes. If found, see
"3.5 Error based troubleshooting" [
4
17] to solve the specific error.
▪
A5-00 – Outdoor unit: High pressure peak cut / freeze protection problem
▪ U0-00 – Outdoor unit: Shortage of refrigerant
▪
UA-00 – Indoor unit, outdoor unit mismatching problem
Possible cause: Error on other indoor unit.
2 Perform a check of the indoor unit main PCB. See "4.9 Indoor unit main
PCB" [
4
106].
Possible cause: Faulty indoor unit main PCB.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.