Question about Goodman PHKJ048-1 Air Conditioner

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My Aux heat seems to run all the time.

I have a Janitrol Heat Pump with Aux electric heat. Recently the Aux heat seems to run all the time.

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  • Keith Miller
    Keith Miller May 11, 2010

    what is the outdoor temp some units will switch to aux heat when outdoor is to cold if not does your unit have a new air filter for proper air flow and heat recovery.

  • dwkcool May 11, 2010

    take a thermometer and put it in a air supply vent ,turn the heat on and watch the temp and see if the temp goes up when the aux heat kicks in if not the aux relay or sequincer is not working

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  • 182 Answers

Is it cold enough in your area to lock out the heat pump?If the heat pump isnt operating correctly the aux heat will come on then too.

Posted on Jan 04, 2009

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1 Answer

What does the "auxillary heat"


Auxiliary Heat is used to turn the electric heat strips ON, If the heat pump is not working. Or if the heat pump can't bring the space temperature up to Set Temperature it will display Aux Heat ON....... Assuming you have a Heat Pump System with Auxiliary Electric Heat as Back up...... If the tech didn't install a jumper wire from AUX to W on the subase which is in back of the Display on the Thermostat.....you won't get Auxiliary Heat if the Thermostat is set for Auxiliary Heat. Other wise the thermostat will turn the heat pump on first and then the electric heat (Aux Heat) if it needs it to satisfy the set temperature....... Hope this helps

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I hooked up a coleman electric furnace to a janitrol condenser heat pump . The t-stat wires on electric furnace are red white green and yellow. I added a blue for common off of transformer for digital...


Hi, first of all you need to get a hand full of 5 amp auto type fuses and install one on the hot leg of the 24 volt secondary side of the transformer. Just use 2 female crimp on connectors and put the fuse in the middle of the hot wire. Saves $$$$ on replacing transformers when you have a dead short on the low or high voltage side of any transformer, just a trick of the trade, food for thought. Fuses are much cheaper. On your electric unit, you may not need the common on this to operate the digital stat if it has batteries. This may be your dead short. On the Janitrol condenser, the red is your 24v as you no. They are using blue in place of yellow for cooling. Red is hot, W is heat, G for fan, and blue is cooling on this Janitrol. Keep in mind you are connecting to a heat-pump also, so make sure the wiring is correct. Are you installing this for secondary Heat?? More then likely, the blue common you have added is the dead short as the janitrol uses the blue for a cooling relay in place of yellow. Anyway, use the 5 amp fuse, trick of the trade to save on the transformers. Please keep me posted, as I know know you have this under control.
Shastalaker7
A/C, Heating, & Refrigeration Contractor. Good Luck!

Feb 09, 2011 | Coleman Heating & Cooling

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Hello, I have a rbha-17 electric heat system. My


the orange or blue wire should go to the heat pump and energize the reversing valve and the compressor should be running when the heat pump is on. All it does is reverse the flow of refrigerant and pull btu's from the outside air and deliver them to your house. Check to see if your aux. heat is coming on with the heat pump. If it is electric furnace, this will help explain why your bill is so high.

Jan 13, 2010 | Ruud UAMB042 Air Conditioner

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Our janitrol heat pump is freezing. there is considerable buildup of ice inside the pump itself on the coil. the fan still spins and still heats the interior of the home


Switch the thermostat from heat to Aux. or emergency heat till the outside unit thaws out. This will shorten the life of the outside unit considerable running it all iced up.

Jan 10, 2010 | Heating & Cooling

1 Answer

What does aux mean on a honeywell Thermostat? the heat doesn't seem to be working but warm air is comming from the vents and the heat pump fan is spinning just not enough to match the temp. it's set too....


The aux switch is for electric heat banks installed in the air handler. Depending on the outside temp. it may not be efficient to run in heat pump mode but in aux. or emergency would run the electric heat in the air handler.

Dec 11, 2009 | Goodman Heating & Cooling

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Abbreviation definitions.


Economy Mode = EM
Auxelary Mode = AUX
in em mode heat pump does most of the work in aux either an electric heating element is used or gas depending on if it is gas or all electric

Oct 16, 2009 | Ruud Central System Air Conditioner

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Im swithcing from a Janitrol to a hunter ''stat'',


You have the wrong therm. This one will not work, you need one that works with all 7 wires. You probably have a heat pump or aux heat. The only hunter that will work is the one for a heat pump. The back of the packages will tell you more info.

Jun 17, 2009 | Hunter Fan Company 5/1/1 Programmable...

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Trane Weathertron XE1000 Thermostat Wiring


Check to see if you have the system switch accidently on em. heat. The way you have it wired is correct except for the having brown on e. disconnect brown wire and cut ofbare end just in case they have the wire hooked up for constant run on roof.

Feb 08, 2009 | Heating & Cooling

1 Answer

Heater running continuously


Sounds like you have a problem with your heat pump. Your aux heat is a electric coil. how old is the unit when was the last time it was serviced? How cold is it out side?

Jan 15, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

We recently bought a new house (to us). It has a Goodman heat pump and Goodman Electric backup furnace(A36-15) with a Janitrol stat. I switched the stat to emrg. Heat when the temp got below...


If you have a volt meter, check to see if you have 24 volts coming from the thermostat on the yellow wire.

If you do, and it is set on emer heat, you have a bad T-stat.


It looks like it is wired properly.

If you have no meter, you could try changing the stat, I reccomend Honeywell or white rodgers.

Let me know if you eliminate the Tstat as the problem and we can go from there.
Chances are its the stat.

Dec 06, 2008 | Heating & Cooling

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