Error code
C5 C5 fault
Applies to 2 models
GWH12QC-K6DNB8D/I, GWH12QC-K6DNA1D/O
What this means
The unit reports C5 and the manual directs the owner to contact service.
When to call a technician
This fault involves refrigerant, pressure, or electrical work that must be handled by a certified technician under EU F-gas rules. Do not attempt to open the refrigerant circuit, access mains wiring, or adjust pressure components yourself. Contact a qualified installer or servicer for this one.
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