Question
Can a faulty indoor unit cause error code 531 on the outdoor unit?
Asked by: USER3384
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66 Answers
Answer (66)
Yes, a malfunctioning indoor unit can definitely trigger error code 531 on the outdoor unit. The outdoor unit relies on communication from all indoor units. If an indoor unit is unable to communicate properly, it can cause the outdoor unit to display this error. Identifying the problematic indoor unit is crucial.