Air Handler Tripping Breaker on Heat


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Old 11-09-10, 02:23 PM
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Air Handler Tripping Breaker on Heat

Hello DIY'ers,

I live in a condo in a multi-level building and my place has an air handler about 20 years old. This is the information listed on the sticker:
International Environmental Corporation
Model: 14VE-2E
Serial: 80-7366
Volts: 115
Hertz: 6
H/P: 1/5
Phase: 1
Amperes Per Mtr: 3.45
Max. Rating of Supply Circuit Fuse: 15 amperes 10-80
Min. Supply Circuit Ampacity: 15

It has two 1/5 hp motors and last year I replaced one because it was smelling like burnt wires. I did not get a new capacitor for the new motor because the guy at the parts store tested it and said it was still good, even though I think it's the original from long ago. I've been running A/C for the past year and it works perfectly. Last week it was cold and I turned the air handler to HEAT and within 10 minutes of it running on HEAT it trips the breaker. The breaker for it is a double switch which has 70 on it. I tried to run A/C and the A/C ran for well over an hour and never tripped. I went back to HEAT and about 10 minutes later it trips again.
Where should I focus my attention in troubleshooting from here? Thanks for any help available.
 

Last edited by korben; 11-09-10 at 02:39 PM.
  #2  
Old 11-09-10, 09:17 PM
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Is this a chill water fancoil with electric heat strips?
Any melted wiring or debris on the strips?
Do you have an amp meter?
What is the KW of your strips?
 
 

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