Question about Heating & Cooling
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Posted on Jan 02, 2017
Check your wiring between the contactor and compressor for a short to ground, or check the compressor windings for short to ground.
With the Tstat off, the contactor should be open so the only way for the compressor to be trying to do anything is if the 110 volts from the unbroken side are traveling through the compressor to ground. Since 110v is not enough to run it, the overload is kicking it out, cooling off, and repeating the cycle. When you kick on the Tstat, the contactor is supplying voltage directly to ground without going through the resistence of the compressor windings and kicking the breaker.
Post back and let me know what you find.
Posted on Nov 20, 2007
SOURCE: dometic ac/heat pump
Would suggest it is drawing excessive current, make sure both fans are going, (inside will cycle low/high), or possible faulty reversing valve solenoid, or could be as simple as loose wire connection, how long does it run for and is it on the same 20amp breaker as the rear?if so start by running only the front unit in cooling 15/20min, check fans running, no unusual bearing noises, switch off for 60 sec then back on heat mode, if unit runs without stopping rewire onto separate circuit, if inside fan not working on heat check bi-metal switch in the airway, if running for a while, fans going but not very warm, check reversing valve.
Note, electrical's should be tested by someone who are qualified in the field.
Posted on Nov 06, 2008
SOURCE: Heat pump trips circuit breaker
i want to know the size of breaker to use.we are using a 30,30,30,30but it is kicking off.would a 40,40,40,40or higher be better if they sell them.
Posted on Nov 22, 2008
1. Open dryer door and remove the phillips head screws at the 5 and 7 O'Clock positions. 2. Remove three screws at very back, allowing top cover to be moved back about an inch and lifted off. 3. remove screw at top left and top right from front top panel. 4. pull plastic front panel along top edge to release front top panel. (watch for sharp edges) 5. Swing top up and over onto top of dryer. 6. Unplug light and door switch. 7. remove four screws at top of large lower panel. 8. lift panel up a bit and off. 9. unplug sensor plug at bottom allowing panel with door to be set aside. 10. gas dryer has dime sized high limit thermostat on left front side of burner chamber. Has two wires on it, with a small pin in the center. Push the pin in. Reassemble and clean out vent, eliminating flexible venting, replacing with rigid aluminum piping and elbows. Outside vent should have a four inch vent flap opening, not just a two inch if it is that style.
Posted on Jan 03, 2009
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It is possible that it's the thermostat. When you turn it into cool mode, does the unit come on at all or is it silent? If nothing is coming on, then it's likely it's the tstat. Did the tech check the refrigerant charge while he was there? He should have checked it with the auxillary heat off and the unit just in heat mode. Make sure that the condenser unit outside is coming on when you are calling for cool, If you turn it on and everything comes on, go outside and put your hand on the large copper pipe coming into the unit. In cool mode, this pipe will be cold to the touch and in heat mode, the pipe will be warm to the touch. There isn't much you can do on your own with the exception of changing the tstat. If you can answer some of the questions I have posed, I can try and give you some more answers. Just remember that a check up doesn't mean its a guarantee that something won't happen the next day, it's just that everything was in working order at the time of the checkup.
Posted on Mar 21, 2009
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