Bryant · Comfort Alert Diagnostic Module
The electrical connections to the unit are incorrect or have developed a fault, disrupting the control signals and power flow.
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Refer to the unit's wiring diagram (usually found inside the access panel).
Carefully inspect all accessible wiring connections to ensure they are secure and correct according to the diagram.
Check for any signs of burnt or damaged wires.
Contact a qualified HVAC technician to verify and correct the wiring.