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I have a heat pump that the outside unit sometimes doesn't engage the compressor and will not cool. I have taken the panel off and it kicks on, on one occasion others I have had to tap on the contactor. Now I have to engage the contactor manually. By doing this it jumps 4 or 5 times and engages fine for a day or 2 then stops engaging again. Want to get this fixed before I damage the unit.

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Get a new contacor

Posted on Nov 10, 2013

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It is simple contractor problem, replace it by a new 60 amp contractor. prob get fixed. try it

Posted on Oct 15, 2013

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I have an amana heat pump a/c PTAC unit 14700 btu and it seems the compressor is not engaging or blowing cold air


could be a bad run capacitor or the unit needs to be cleaned take it outside and wash the condenser coil the outside coil and the evap coil on the inside be careful not to get the electric circuits inside the unit wet. I would wash the coils first and then see if it cools. Hope this helps

Aug 13, 2014 | Amana PTH123B25AJ Heat Pump Air...

1 Answer

Our window unit will cool for 30 seconds then kicks off. the compressor also doesnt kick off... when it is cooling the air is ice cold. where is the condensor on this unit


The condenser in a window AC is a that winding pipe that's covered with aluminum fins on the outside. When the refrigerant EVAPORATES, it draws heat from your room. When it CONDENSES, it releases heat to the outside. It's basically a heat pump.

Jul 19, 2011 | Heating & Cooling

2 Answers

I have a Rheem heat pump/air handler; it draws 2.9amps with only the fan running, 13amps when the heat pump is running and 38amps with the heat strips on. My question is why the unit draws that many amps...


Sounds like it must be about a 2.5- 3 ton system. The 13amps has to be the compressor draw -normal. and 38 on the strips- normal. 2.9 fan -normal.

You may want to check your wiring to see where the outside unit gets its power. Theres nothing inside that can draw 13 amps. That almost has to be the compressor power wire.

Jan 27, 2011 | Heating & Cooling

3 Answers

Uotside unit blowing cool air but hot on the inside


It sounds like you have a unit called a heat pump. When a heat pump unit is in cooling mode the outside unit blows hot air and the inside unit blows cold air. If the outside unit is blowing cold then the indoor unit is most likely blowing room temperature or warm air. It sounds like the thermostat could be controlling incorrectly or you could have a failed reversing valve which is the device that switches the unit from heating to cooling mode.

May 31, 2009 | Ruud UBHC Air Conditioner

1 Answer

RUUD heat pump system does not cool properly.


With a heat pump system there are always going to be a back up heat strip inside the Air Handler.

If you detect a faint humming in the Condenser call your local service company and ask them to come and replace your capacitor in the condenser. The humming is from the contactor engaging but not being able to start the compressor due to not having the required Microfarads to start it.

Let me know if this helps

May 07, 2009 | Heating & Cooling

2 Answers

Heat Pump Stops Working only in the Early Morning


When the unit does what you say does the fan motor outside stop also , if it does that means it is in defrost mode and should kick back over to normal after the system heats up the coil enough

Nov 24, 2008 | Weather King 12AJA4801AH Air Conditioner

1 Answer

Ruud heat pump outside unit trips circuit breaker


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.

Nov 20, 2007 | Ruud Central System Air Conditioner

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