Question about GE Zoneline Deluxe Series Cooling & Electric Heat Unit AZ25E07D3B

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Ge ptac zoneline AZ52H07DABM1 cannot find any literature on this unit. Fan speed is constant low speed (regardless of setting) Guest complaints on this room are piling up, and I need some literature to properly t-shoot this unit. I did see a reversing valve, so it must be a heat pump model, but the compressor will not run in that mode. Outdoor air temp is 55 degrees. Can you steer me in the right direction? BIG THANX IN ADVANCE. Tom in Okemos, Mi.

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  • Mitchael Jan 11, 2013

    Well i have replaced both control boards and blower motor the r/v is being power after a short time but no heat

  • Hilton Dude Feb 19, 2013

    Some of the GE PTACs I've worked on have had a reset on the heater element. I'd also check the condinuity of the element itself. Not all heat pumps are only that. The ones i have seen you can select heat pump or just the wire element which could be done either a switch on the older units or in the programming on the digitals.



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Hello Tom ,   I'm sure i can help you with this.... I work on these units everyday. unfortuneately im not there to put my hands on it but i will explain as clearly as possible.    The most common problem I tend to find with these units is that the control board  and indoor fan motor tends to go bad in these quite often.  If you put the unit in A/C MODE  and/or Fan mode and set it to high if it will not speed up from low , then your problem could be in a couple different places.   1st.  The bearings in the fan motor could be wearing down ,  2nd  The Control board could be bad  in that its not telling the fan motor to speed up.     


And when you tell me that the compressor doesnt run in that mode at any given time..... which the electric heat and heat pump itself works together so that when the load is really tough  that the heat pump doesnt over work and in general saves life on your compressor.      


Solution is this.


Take your indoor fan motor off and and drill out the rivits  and it pulls apart easy, and replace the bearings and grease them.


ALIGNMENT OF THE FAN IS A MUST.   doesnt cost much at all the fix this. Just a little time and bearings


Replace the Board in the control box



This my friend will definetly solve your problem.    These problems i see everyday with these same units.   

Posted on Oct 14, 2007

  • Mitchael Jan 11, 2013

    I did replace both boards on ptac and blower motot but have no heat but have a/c

  • Bryan Nov 05, 2013

    (I know this is almost a year old, and you've probably fixed it by now, but...)I work on hotel ptac's a lot, I don't know how yours compares in common problems, but when the heat isn't working, first thing you do (well after unplugging it) is with an ohm meter check the resistance across the heater coil wires (assuming electric) if it's infinite, one of your thermocouplers has popped.(there's usually one re-settable, and one that would need to be replaced) check the resistance across each thermocoupler. reset the re-settable one, or replace the non-rs-settable one. If neither of those was the problem, check your selector knob. these (again, on the unit's I work on, maybe quite different from yours) tend to break open from people pushing on them to hard to turn the knob. to check it, (without getting all technical with the ohm meter) push lightly on it, and turn it to several different positions, back and forth, see if the 'function' you get changes. (these are double pole switches, and if one plate in the switch comes loose, it may not move when you turn the knob) so, if you get the wrong function(heat when off or cool, high fan speed when off or low, cool when off or hot, etc.) then it's the switch and that little board should be replaced.



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