Carrier 58YAV LED CODE: 33


Old 02-22-11, 06:37 PM
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Carrier 58YAV LED CODE: 33

Ok, so, maybe this is just the first time I noticed this. Or, maybe something has gone wrong, regardless, here's what I observe.

The blower comes one, then the burners come on. It seems like the burners only stay on for a couple minutes during which, the LED is solid. After a couple minutes, the flames stop and it seems only the blower is running. Then, the LED is flashing code 33.

Is it just me? seems odd, seems like the furnace is not running the way it should. It took awfully long tonight to bring the temp from our daytime programmed 62degrees to the evening 68degrees.

I've got a honeywell tstat by the way. I can't remember what my CPH is set on. Nor do I understand that concept.

thanks - mike.
Old 02-22-11, 06:47 PM
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"33 LIMIT OR FLAME ROLL-OUT SWITCH IS OPEN - If open longer than three
minutes, code changes to #13. Flame roll-out switch requires manual reset.
Check for: - Defective blower motor or capacitor.
- Dirty filter or restricted duct system.
- Loose blower wheel.
- Defective switch or connections.
- Inadequate combustion air supply (Flame Roll-out Switch or fuse link open). "

You should also check the entering air side of the evaporator coil.

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