Gatorgrizz27
Well-known member
- Joined
- May 20, 2020
- Member Number
- 756
- Messages
- 886
We have a 2 story house with upstairs and downstairs AC units. Heat had been working fine, even below freezing recently, but the system kicked off and wouldn’t come back on. Blower motor wouldn’t run in any position on the thermostat, heat, ac, or just fan on. Looked at the air handler and heard it buzzing, seemed like it was a bad capacitor.
Threw a capacitor in it tonight and it’s still not running, I poked around a little more and the buzzing was coming from the relay. I jumped the hot lead to the blower motor wire and obviously the fan will run, but the outside unit isn’t kicking on. I have two other small wires connected to the relay, I’d assume one is the trigger from the thermostat and then the other one tells the unit to run. Hooked them together an no change, then touched the one I’m assuming triggers the outside unit to the hot lead and got fireworks.
Basis of my question is does the system work like I think it does, blower motor has to start running before the condenser unit will kick on? I’d imagine it has to to keep it from overheating or freezing up. Then, is it possible to jump something to get it to run for awhile and heat it up? I’ll shut it off and not let it run all night. Right now the blower is running with only the aux heating elements on, so it’s not doing a whole lot.
Threw a capacitor in it tonight and it’s still not running, I poked around a little more and the buzzing was coming from the relay. I jumped the hot lead to the blower motor wire and obviously the fan will run, but the outside unit isn’t kicking on. I have two other small wires connected to the relay, I’d assume one is the trigger from the thermostat and then the other one tells the unit to run. Hooked them together an no change, then touched the one I’m assuming triggers the outside unit to the hot lead and got fireworks.
Basis of my question is does the system work like I think it does, blower motor has to start running before the condenser unit will kick on? I’d imagine it has to to keep it from overheating or freezing up. Then, is it possible to jump something to get it to run for awhile and heat it up? I’ll shut it off and not let it run all night. Right now the blower is running with only the aux heating elements on, so it’s not doing a whole lot.