Carrier furnace won't come on (sometimes)


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Old 12-20-09, 01:46 PM
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Carrier furnace won't come on (sometimes)

Hello everyone, my Carrier furnace #48ss-024060301 will not come on sometimes. Usually in the morning when system hasn't cycled on for several hours. If I cycle the breaker it will fire up and run fine. When it doesn't come on nothing happens. No fan, No burner...nothing. When I cycle the breaker it may run normal for several hours, cycling on/off when needed or it may run normal for several days, or it may only work for one heat cycle and not come back on again until I cycle the breaker. I was told that by flipping the breaker I'm resetting the safetys, but which safety will keep the burner from firing up, and the fan from coming on?

Thanks in advance and any info will help

Phil
 
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Old 12-20-09, 02:54 PM
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Switching Breaker

By switching the breaker off & back on you are resetting the control. I don't think it's a problem with a safety but in the control.
 
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Old 12-20-09, 04:43 PM
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Uhhhhhh. An intermittent problem.



Fun.


http://www.xpedio.carrier.com/idc/gr...t/48ss-4pd.pdf
 
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Old 12-20-09, 04:54 PM
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Hey SeattlePioneer, Thanks for the manual, I didn't have one.

Phil
 

Last edited by philsxj; 12-20-09 at 06:07 PM.
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Old 12-20-09, 05:09 PM
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What is the third and fourth digit of the serial number? (indicating the year)
Looks like Carrier started using LED trouble codes in 1995.

The 94 does not show an LED. This is the 95 manual. ..
http://www.docs.hvacpartners.com/idc...8ss,sx-8si.pdf
 
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Old 12-20-09, 06:06 PM
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Here's the serial number:
0794600552
 
 

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