Friedrich AS - W126BMS0, Service Manual

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Part 4 Trouble Shooting
When indoor Fan does not operate
Trouble 4
Check the SSR high speed operation by remote control.
(the Indoor Fan Motor is connected)
Turn off main power.
Check the connection of CN-FAN.
Check the Fan Motor.
Check the Fuse(AC250V, T2A).
Turn on the main power
Check the related circuit of indoor Fan Motor.
• The pin No.
38
of micom and the part for driving SSR.(Q01M)
• Check the related pattern.
• Check the SSR.
- SSR Open: Indoor Fan Motor never operate.
- SSR short: Indoor Fan Motor always operates in case of ON or OFF.
• Check the connectors.
• Check that whether the housings and harnesses would be separated
when there are attempts to disconnect those.
• Check to pull with hands directly to the harness.
• No harness should be divided from the housing.
The voltage of Pin No 1(orange) and 3(black) of CN-FAN.
About AC 160V over About AC 50V over
SSR is not damaged Check SSR