When your indoor blower fan is running continuously but your outdoor air conditioning system fails to cool your home, it points to a communication break or a power failure at the outdoor unit. While your indoor thermostat successfully commands the indoor air handler fan to blow, the 24-volt control signal or 240-volt power supply may be failing to reach the outdoor condensing unit. Common culprits include a tripped outdoor electrical disconnect box, a tripped heavy-duty breaker in your main electrical panel, a burned-out dual-run capacitor inside the outdoor unit, or a severed low-voltage control wire. Additionally, a dirty outdoor condenser coil can prevent heat release. You can troubleshoot by inspecting the outdoor disconnect switch and checking control wiring. You can verify that the issue is resolved when testing confirms the outdoor contactor closes and the compressor starts running.
1 votes
Marked as accepted