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M
Mark AdamsAug 23, 2025
Why is there a communication failure between my Friedrich FPHW091 Air Conditioner's indoor and outdoor units?
- TTyler MeadowsAug 23, 2025
A communication failure between the indoor and outdoor units of your Friedrich Air Conditioner can occur for several reasons: * The communication cable connector may be loose; ensure it is securely connected. * The communication cable itself might be faulty and need replacement. * The connection between the filter board and the outdoor control board or terminal might be incorrect or loose; verify these connections are correct and secure. * A failure in the indoor control board, PFC board, power board, or outdoor control board could also be the cause, requiring replacement of the respective board.
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