An air conditioner suddenly stopping mid-operation is usually triggered by a protective safety device or an electrical fault. Common reasons include a tripped circuit breaker due to an overloaded compressor motor, a safety float switch shutting down the system because of a clogged condensate drain line, a blown fuse in the outdoor disconnect box, or a thermal overload switch tripping inside the compressor after overheating on an extremely hot summer afternoon. Verification: Check your electrical panel for tripped breakers and examine your condensate drain line for standing water blockages.
1 votes
Marked as accepted