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bullet Commonly Reported HVAC Problems:


My heat pump is iced-up, mine blows cold air. My pilot goes out. Do you know what to do?You have problems? We have answers! Hannabery HVAC
Commonly Reported HVAC Problems:
[Copyright © 1996-2014. Hannabery HVAC. All rights reserved.]

Indoor fan won't shut off unless I use the circuit breaker:


Shutting indoor unit off at the main breaker

So your indoor fan never stops running. You've checked the obvious... The fan switch on the thermostat is in the "auto" position, not the "on" position. You tried turning the thermostat to the "off" position, nothing works. The only way to get that pesky fan to stop running is to shut it off at the breaker or the Emergency Shut-off switch.

Well, if you are going to have a problem with your heating or air conditioning system, this is the one to have!

Although your fan never shuts off, your heating and air conditioning still works fine. And if you have allergies, it's better to have your fan running continuosly to filter more air anyway. And keep in mind, it really doesn't hurt the motor or cost more money, running all the time. And lastly, fixing this problem, usually isn't an expensive repair. But having said that, do not ignore the problem and let it linger, call for service.

There are usually only three things that cause this problem:
thermostat cable, 18-5 wire

  1. A fan relay that is stuck closed
  2. A shorted thermostat cable
  3. A bad thermostat
That is about all there is to this problem. So if your fan doesn't shut off, don't panic - just schedule a service call and have it repaired.

Below is a list of possible causes. Items in red usually require a service call. Items in blue however can be addressed, some even fixed by the homeowner.

Red = Professional fix | Blue = Homeowner fix
toolbox for heating and air conditioning service and repairs
  • Stuck fan relay
  • Thermostat cable shorted
  • Bad thermostat

The bottom causes in blue are commonly found problems and can be addressed by the homeowner. Try to check for these conditions first before calling for service.

Please keep in mind that the information found on our website is provided free of charge and Hannabery HVAC does not assume any liability resulting from the information we provide. We hope this information helps, but please note that these are just rough guidelines, and not all possible situations are covered. Your HVAC system should be inspected and repaired by a trained technician.

Commonly Reported HVAC Problems


How Comfortable Do You Want To Be?

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[Must be in our service area]


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Our Credentials
BBB Accredited Business with A-plus rating, Allentown, Quakertown, Clarks Summit NATE-certified Service Technicians, Lehigh Valley, Lehigh County SuperPages SuperGuarantee Rheem equipment, Rheem dealer, Rheem installer, allentown, bethlehem, easton, pa Member of Associated Builders and Contractors (ABC) Eastern PA Chapter Trane Comfort Specialist Dealer Member - Greater Lehigh Valley Chamber of Commerce Angie's List 2012 Super Service Award Winner
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Main Office: 200 Schantz Road, Allentown, PA 18104

PA CONTRACTOR #8215

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Copyright © 1996-2014. Hannabery HVAC. All rights reserved.

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Hannabery HVAC has been proudly serving Eastern Pennsylvania homeowners and businesses for over 40 years. Our work areas include: