Original message
| Someday
 |  "Suncutter 7442-901 wont start"
, posted Wed 16 Apr 20:01  
I have a suncutter ac\heatpump unit that dosen't want to start.
I have voltage to the fuses both in and out. No voltage at the thermostat. Is there a relay that may need to be replaced. Any help please.
Thank Brian
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Replies:
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| theduke03
| "Re(1):Suncutter 7442-901 wont start" , posted Wed 16 Apr 20:42
You will need to open up air handler and check for 24v from R to C then report back. Also look for small automotive type fuse that may have blown due to a shorted wire/component.
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| | someday
| "Re(2):Suncutter 7442-901 wont start" , posted Thu 17 Apr 19:13
I did not see a fuse. This sounds stupid but what is r and c stand for. Thanks for the help
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| | theduke03
| "Re(3):Suncutter 7442-901 wont start" , posted Thu 17 Apr 19:24
R and C don't stand for anything. They are wire connection terminals where tstat wires connect to. R=24v hot from transformer, C=common side of transformer.
Some of the pictures displayed here are brought to you by Houston204. Be Safe.
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| | someday
| "Re(4):Suncutter 7442-901 wont start" , posted Thu 17 Apr 20:06
No voltage
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| | theduke03
| "Re(5):Suncutter 7442-901 wont start" , posted Thu 17 Apr 21:06
If there's definately no fuse or breaker in the unit then your transformer is bad. Unfortunately you must now look for a short in the wiring or a shorted component. That is what would normally blow a transformer.
Some of the pictures displayed here are brought to you by Houston204. Be Safe.
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| | someday
| "Re(6):Suncutter 7442-901 wont start" , posted Thu 17 Apr 21:28
Do you think the blower motor stopping would fry the transformer? It stopped once before last year and tripped the circuit breaker. I gave it a spin and reset the breaker no problems until now.
Brian
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| | theduke03
| "Re(7):Suncutter 7442-901 wont start" , posted Thu 17 Apr 22:44
Let me backup a step here. Do you have power to the air handler? Is the breaker tripped?
Some of the pictures displayed here are brought to you by Houston204. Be Safe.
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| | theduke03
| "Re(8):Suncutter 7442-901 wont start" , posted Thu 17 Apr 22:45
You should call a pro.
Some of the pictures displayed here are brought to you by Houston204. Be Safe.
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| | someday
| "Re(9):Suncutter 7442-901 wont start" , posted Thu 17 Apr 23:21
This is a package ac system. The breaker was last year. Just thought the blower might have quit again. It's an old system don't think it's worth having a Pro come out. If I can't get it going I'll just go new.
Thanks For Yor help.
Brian
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