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drjay9051 08-07-2010 03:10 PM

Heat tripping breaker
 
My A/C runs fine. Problem is with heat. On a cold night if I crank up the thermostat the breaker will trip. If I reset and only raise the thermosat a couple of degrees no problem. Than when I reach the set temp i again raise another couple of degrees. No problem. Only trips when I raise the temp say 6 OR 8 DEGREES AT A TIME. lOOKS LIKE THE AIR HANDLER IS ON A DOUBLE POLE 30 AMP BREAKER AND THE OUTSIDE UNIT IS ON A DOUBLE POLE 20 AMP BREAKER IF THIS HELPS.

tHANKS.

yuri 08-07-2010 04:03 PM

Is it a heat pump? Post the brand name and model and serial #. If it has extra electric strip heaters in the ductwork one may be shorted and causing the problem. They cut in when the temp has dropped or the heat pump cannot keep up.

drjay9051 08-07-2010 04:42 PM

Quote:

Originally Posted by yuri (Post 481968)
Is it a heat pump? Post the brand name and model and serial #. If it has extra electric strip heaters in the ductwork one may be shorted and causing the problem. They cut in when the temp has dropped or the heat pump cannot keep up.

Yuri:
Appreciate the reply. Unit is made by Goodman manufacturing Houston, TX. Only three years old. Unit inside house says heatpump/ac unit. Model number is ARUF182416AA Serial Number is 0607203217.

Where are these heat strips located? Can I fix myself or do I call an HVAC professional. Never heard of Goodman. If I had put in unit would have gone with a better know name but it was installed just before I bought house. Had home inspection done but not sure if inspector checked heat as inspection was done in May.

Thanks again

Jay

kbsparky 08-07-2010 04:59 PM

Check the kW rating of that air handler/strip heat. A 30 Amp breaker would be good for 5 kW or so. Many units have 10 kW strip heaters, which would blow a 30 Amp breaker in short order.

So the question now is this: Does the breaker trip immediately, or take a few minutes after you bump up the heat setting by more than a few degrees?

yuri 08-07-2010 05:00 PM

You should get a Pro to do it. Those strips use 240 volts and if shorted one slip can kill you. May have 5 yr warranty on parts but 1 yr on labor. Goodman is a very large company. Got a lot better recently when they joined with Amana. VERY popular with new home builders due to reasonably priced equipment. Not hard to get parts for.

drjay9051 08-07-2010 05:11 PM

Yuri
 
Thanks, Yuri. The breaker takes a couple of minutes to trip. I see no KW rating on unit. There is a plate which indicates minimum amperage if "auxillary heat kit" is installed however none of the listed aux. heat units are checked on the plate. Ill look up the model on Goodman site. I hope its a short in the strip and not too small a braeker as this would be quite expensive to rerun a circuit I imagine. Yuri, when HVAC pro did the original wiring hookup wouldnt they assure the breaker was of adequate size??

yuri 08-07-2010 05:49 PM

You would hope so. Possible that no permit was taken out or inspection done. Another reason to get a Pro to check it out properly.

beenthere 08-07-2010 07:44 PM

The model number of the air handler won't tell you what strip kit is in it.

Need to look to know.

drjay9051 08-08-2010 08:58 AM

Where is the strip kit located??????????????:eek:

beenthere 08-08-2010 09:00 AM

Quote:

Originally Posted by drjay9051 (Post 482211)
Where is the strip kit located??????????????:eek:


Inside the blower compartment.

Shadetree99 07-07-2013 10:05 PM

I have the exact same unit with two heat strips and it is on a 30 amp breaker but the heat strips are coming on in cool mode. If I disconnect them it cools fine. What would cause this?

beenthere 07-07-2013 10:18 PM

Short in thermostat or thermostat wires. Or a bad sequencer.

Shadetree99 07-08-2013 06:56 PM

I tried disconnecting the wire from the thermostat to the heat control and no change. Is the sequencer the small circuit board? Do you think it could still be the thermostat?

beenthere 07-08-2013 07:17 PM

If you disconnected the wires from the stat and it still did it. Then it can't be the stat.

Post pic of inside of units control panel.

Shadetree99 10-14-2013 04:34 PM

Requested Pic
 
1 Attachment(s)
Sorry for the delay. I have since replaced the thermostat. Heat strips are still receiving current in cool mode. Do you think it circuit board or transformer in the pic causing the issue?


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