Friedrich MR12C1H Air Conditioner User Manual


 
Troubleshooting
(9) Flow chart for outdoor communitcation circuit detecting:
7HVWWKHYROWDJHEHWZHHQ1SRLQWRIZLULQJERDUGDQGFRPPXQLFDWLRQFDEOHZLWKXQLYHUVDOPHWHU7KHYROWDJHVKDOOEH
YDULDEOH2WKHUZLVHLWPLJKWEHPDOIXQFWLRQRIPDLQERDUGRILQGRRUXQLWRUPDOIXQFWLRQRIPDLQERDUGRIRXWGRRUXQLWRU
ZURQJZLUHFRQQHFWLRQRILQGRRUDQGRXWGRRUXQLW3OHDVHHQVXUHWKDWWKHUHLVQRPDOIXQFWLRQRIPDLQERDUGRILQGRRUXQLWRU
ZURQJZLUHFRQQHFWLRQRILQGRRUDQGRXWGRRUXQLW$IWHUUHPRYLQJWKHPDOIXQFWLRQRILQGRRUXQLWUHPRYHWKHPDOIXQFWLRQRI
RXWGRRUXQLW
7HVWWKHYROWDJHRISLQDQGSLQRI8ZLWKXQLYHUVDOPHWHUYROWDJHRIERWKVLGHVRI57KHYROWDJHVKRXOGEH
YDULDEOH7HVW7HVWWKHYROWDJHRISLQDQGSLQRI8ZLWKXQLYHUVDOPHWHUYROWDJHRIERWKVLGHVRI57KH
YROWDJHVKRXOGEHYDULDEOH7HVW2WKHUZLVHWKHUHLVPDOIXQFWLRQRIPDLQERDUGRIRXWGRRUXQLW
7HVWWKHYROWDJHRISLQDQGSLQRI8ZLWKXQLYHUVDOPHWHUYROWDJHRIERWKVLGHVRI57KHYROWDJHVKRXOG
EHYDULDEOHWHVW7HVWWKHYROWDJHRISLQDQGSLQRI8ZLWKXQLYHUVDOPHWHUYROWDJHRIERWKVLGHVRI&7KH
YROWDJHVKRXOGEHYDULDEOHWHVW2WKHUZLVHWKHUHLVPDOIXQFWLRQRIPDLQERDUGRIRXWGRRUXQLW
7HVWWKHYROWDJHEHWZHHQSLQRI5ZKLWHDQGSLQRI87KHYROWDJHVKRXOGEHYDULDEOH7HVWYROWDJHEHWZHHQ
SLQRI5ZKLWHDQGSLQRI8ZLWKXQLYHUVDOPHWHU7KHYROWDJHVKRXOGEHYDULDEOH2WKHUZLVHWKHUHLVPDOIXQFWLRQRI
PDLQERDUGRIRXWGRRUXQLW
63