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376CAV - Sometimes Doesn't Heat

Article ID: 510
Last updated: 18 Dec, 2023

Carrier 80% Gas Furnaces: 376CAV

Re: Sometimes Doesn't Heat

There are two faults on this furnace control that will auto-reset after 3 hours:

  • Code 13 = Hi Limit open for more than 3 minutes
  • Code 14 = 3 failed Ignition attempts

Qty Possible Causes:
Bad Limit (Code 13)
Blower Failure (Code 13)
Bad Glow Plug (Code 14)
Dirty Flame Sensor (Code 14)

CHECKOUT:

1. Check Blower Operation


2. Check Ignition Sequence

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Article ID: 510
Last updated: 18 Dec, 2023
Revision: 5
Access: Public
Views: 34
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