Issue with Dometic 3314080 A/C unit

dougrainer wrote:
Sorry, I see no increase of Bad capacitors. Also, once the Compressor starts and the OP states it IS cooling, a Capacitor will not cause the running compressor to stop. The Capacitor GETS the compressor to start, not keep it running. Doug

I've been repairing ac&r since 1967 so you don't need to school me on what a capacitor does and I'll treat you the same way. And yes, as the Chinese mfg of capacitors has taken over the US market the failure rate of capacitors is much higher now than it was before. I would try to find one made in the USA.

If the contacts in the start relay stick and the start capacitor isn't removed from the circuit after start-up, the compressor will stop soon after the start capacitor goes up in smoke as the start windings burn up.

DFord wrote:

dougrainer wrote:
1. That is NOT the Model of your AC unit. It seems to be the p/n of your 10 button CCC wall tstat.
2. How long does it take for the compressor to trip? Usually that indicates a BAD compressor and is pulling too many amps. The amps increase the longer it runs until the breaker trips. Doug

Doug, it seems like a bad season for capacitors and starts kits going bad.

TCI, you may need to call in help to check the capacitors. Start capacitors go bad when they're in the circuit too long. They make a mess when they overheat. You can check that with visual inspection. If it's bad change both the start capacitor and the relay or solid start device that controls it. The start capacitor is usually black plastic with a star washer holding the top down.
The "run" capacitor is usually a metal can. If the top is bulged at all, replace it.
The best way to test capacitors is with a meter. https://www.amazon.com/s?k=capacitor+meter+tester&crid=1GJBBK0OSKNIZ&sprefix=capacitor+meter%2Caps%2C203

Sorry, I see no increase of Bad capacitors. Also, once the Compressor starts and the OP states it IS cooling, a Capacitor will not cause the running compressor to stop. The Capacitor GETS the compressor to start, not keep it running. Doug

dougrainer wrote:
1. That is NOT the Model of your AC unit. It seems to be the p/n of your 10 button CCC wall tstat.
2. How long does it take for the compressor to trip? Usually that indicates a BAD compressor and is pulling too many amps. The amps increase the longer it runs until the breaker trips. Doug

Doug, it seems like a bad season for capacitors and starts kits going bad.

TCI, you may need to call in help to check the capacitors. Start capacitors go bad when they're in the circuit too long. They make a mess when they overheat. You can check that with visual inspection. If it's bad change both the start capacitor and the relay or solid start device that controls it. The start capacitor is usually black plastic with a star washer holding the top down.
The "run" capacitor is usually a metal can. If the top is bulged at all, replace it.
The best way to test capacitors is with a meter. https://www.amazon.com/s?k=capacitor+meter+tester&crid=1GJBBK0OSKNIZ&sprefix=capacitor+meter%2Caps%2C203

1. That is NOT the Model of your AC unit. It seems to be the p/n of your 10 button CCC wall tstat.
2. How long does it take for the compressor to trip? Usually that indicates a BAD compressor and is pulling too many amps. The amps increase the longer it runs until the breaker trips. Doug

low voltage on shore power.