AC Electrical Problems

[memiller279]

So I have a Dometic Cruise Air reverse cycle AC/heater that is tripping the breaker. I have two - the one that is functioning correctly is drawing about 10.5 amps while heating. The one that is not acting right initially pulls about 17 A and then steadily rises to over 20A (when my breaker trips). I've gone and checked the water flow through the unit and tightened all the electrical connections. Clearly there is an extra load on the circuit but not being familiar with the system I'm stumped as to what to try to diagnose next. Anybody got any ideas of where I should look for the gremlins next?

Thanks!
Mike

[capngeo]

Excessive gas pressure?

[memiller279]

Nah, that's just me after Christmas... but seriously I don't know how that would happen - we had it recharged back in July (by a professional) and it has been working fine up until a couple days ago. It had been colder in November and hadn't been tripping the breaker but it probably has been building up resistance in the circuit over time.

[DeepFrz]

If the input water temp changes dramatically you may have to adjust the refrigerant pressure.

Scroll down in URL below and look for a video. He talks about his troubles with air conditioning, in his case going from cold to very warm water.
(Blog) GSSR No. 14 - The Kids Come Home: Greetings...