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Carrier 58DFA Gas Furnace Problems
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02-24-2008, 12:57 PM
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#1 |
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Registered User
Trade: Wahl Construction
Join Date: Feb 2008
Posts: 2
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Carrier 58DFA Gas Furnace Problems
Have a Carrier Gas Furnace (model 58DFA) that’s giving me problems; it’s the weekend so no shops are open and its getting cold! I’m more of a plumbing/construction type so I’m venturing into somewhat unchartered territory here….so, appreciate the assist!
Was working fine but now the main gas jets aren’t firing; pilot light’s on, blower fan activates, fuse is good, filter’s clean, and no flipped circuit (or switches) breakers. Replaced the thermostat with a Honeywell unit (no big deal, wanted a programmable one anyway) and have ran the checklist that came with the unit as best as I can to check the board (VAC test etc.) but have hit snags where I’m not 100% sure what/how to proceed. Ex. Below. - 24 VAC across gas valve: ? - 24 VAC across pressure switch No contact & screw C on board ? - 24 VAC across PL1-2 & screw C on Board ? Just trying to do what I can & if I can get it running well, the heat will be welcome! Not sure how complete this checklist is but almost all of the end-roads do point to replacing the circuit board (?) Again; any help you folks can provide is most welcome! Last edited by KMoses; 02-24-2008 at 05:34 PM. |
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02-25-2008, 01:16 PM
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#2 |
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Registered User
Trade: Wahl Construction
Join Date: Feb 2008
Posts: 2
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Re: Carrier 58DFA Gas Furnace Problems
Problem FIXED!
The Inducer Fan bearing was begining to fail and the additional voltage needed to operated was tripping the heat/safety switch. Replaced and it's working fine again. |
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