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After installing a condenings (heat pumps)unit & thermostat. Intertherm inside unit. The outside unit is cycling heat only. This job is to restore service. Someone stole the orin. A. C. unit.

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Actually what is ur problem??

can u be clear with the problem?

Posted on Jun 25, 2008

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Brand New 2 weeks old 4 ton Trane compressor leaks a lot of water onto pad


If the unit is running in cold weather than there is ice building up on the coils located outside. This is normal in that the unit is running in heat pump mode heating inside and cooling outside, After the unit detects the ice build up it briefly reverses the cycle heating the outside coils melting(defrosting) the ice which you observe as water on the pad.

The video gives you an example of the defrost cycle!
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There are too many things to cause this. I recommend getting a heat pump service man to find problem.

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Some heat pumps have high and low pressure swiches installed to keep compressor from running when unsafe conditions occur that can damage the compressor. If the outside fan is not turing on, the unit is cycling on high pressure, if you see ice forming on the big refrigerant line coming from the air handler, then the compressor is shutting down on low pressure. Low pressure can be cause by lack of air flow through air handler or from a low refrigerant charge.

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I have a Intertherm outside AC & it was put in when the mobile home was built(1982) and I do not know what it is, I only can find the name of the manufacture, where would I find the model, & other...


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OUTSIDE FAN OR INSIDE FAN OR BOTH. IF BOTH CHECK THERMOSTAT WIRE HOOK UP. IF YOU INSTALLED NEW TSTAT CHECK FOR JUMPER ON RH-RC TERMINALS ON TSTAT BACK PLATE. IF INSIDE FAN COMES ON WITH FAN IN ON SETTING AT FAN ON AUTO LEVER THAN PROBLEM IS AT OUTSIDE UNIT. CHECK FUSES IN BOX ON OUTSIDE WALL. SHUT OFF BREAKER FIRST.

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I believe the unit you are describing is a heat pump. Heat pump are great when the temperature isn't below 30 With low ambient temps. outside it is much more efficient and comfortable to run aux. electric heat from the heat pump.

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1 Answer

I have a heat pump and it freeze up


If you are referring to the outside unit freezing up, the issue is in the defrost cycle. The defrost cycle works something like this: The unit reverses the flow of freon causing the inside coil to blow cold air into the conditioned space and the outside coil is now working like an a/c unit, it gets warm to melt the frost/ice. The inside unit electric heat strips come on so you do not notice the cold air being blown in. The fan on the outside unit stops running to allow the coil to get good and warm.
Now the unit should go into the defrost cycle every 90 minutes or so. It should not terminate the cycle untill the coil is clear of frost. There is an "Klixon" type termostat that measures the temperature of the outside coil. This is most likely the problem. It is prematurely terminating the defrost cycle. I'd start there first.

Hope this helps, Let me know if I can be of any further help.

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1 Answer

Our fan for the intertherm p3ra-024k will not shut off. We have put new wiring from thermostat to unit. He pulled the green wire like the serviceman told him to when he serviced it and it still keeps...


You have a problem with the wiring somewhere it could be in the thermostat. When the service man said pull the green wire off that was the power to the fan. The thermostat should wire up as red to the R terminal on the thermostat this is the 24 volt feed to your thermostat and to the unit. The white wire should hook up to the W terminal on thermostat. This white wire is to the heating section of your furnance it activates the heat mode. The yellow wire hooks up to the Y terminal on the thermostat this is the outside condensing unit control for the a/c. The green wire should hook up to the G terminal on the thermostat this is your fan wire that activates the blower in your furnance If this wiring isn't hooked up as such then your problem is in the wiring from thermostat to units inside and out. Also if you have changed the thermostat you need to be aware of the setting for the thermostat and the type unit you have. Most thermostats are universal however, you need to make sure that on the thermostat the setting for heat pump on the thermostat it will have a small switch and on switch will have hp at the top and nonhp at the bottom. If you have a heat pump you need to make sure that the setting on the thermostat is on hp if not a heat pump nonhp is the setting. Also there will be a switch that has g at the top and e at the bottom This is you gas or electric heating seletor switch make sure this switch is in the proper position for either gas or electric heat. Good luck on your repairs Hope this helped

Dave

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3 Answers

Intertherm heat pump


FIRST YOUR OUTSIDE UNIT PROVIDES HEAT BY USING A REVERSING VALVE TO CHANGE THE REFRIGERANT FLOW.THERE IS NO HEAT STRIPS OUTSIDE SECOND YOUR EMERGENCY HEAT TURNS ON ELECTRIC ELEMENTS INSIDE YOUR AIRHANDLER UNIT.IT SOUNDS LIKE SOMEONE HAS WIRED YOUR UNIT WRONG OR HAS THE THERMOSTAT SET IMPROPERLY.WHEN THE HEAT PUMP CANNOT SATTISFY THE SETPOINT THE THERMOSTAT IS SUPPOSED TO TURN ON YOUR ELEC. HEAT UNTILL THE LOAD HAS BEEN REACHED AND THE HEAT PUMP CAN CONTINUE TO MAINTAIN IT.

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Intertherm to Honeywell thermostat


Typically if you have a yellow wire in the "y" terminal blue is used as common or "c". As far as your jumper from rc to rh, that will depend upon what type of heat you have. If all of your heat and cooling come from your packaged unit outside, yes you will need the jumper. If this does not work maybe you have a bad breaker or transfomer.

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