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Furnace Troubleshooting – Common Problems | Repair and Replace

In this episode of Repair and Replace, Vance shows how to troubleshoot some common problems in a gas furnace. Troubleshooting a furnace is best done by eliminating simple solutions first before replacing anything. If your furnace won't start, or keeps shutting off then, it could be locked out. If your furnace not working, here's what to do, step by step.

Browse furnace replacement parts:

How a Gas Furnace Works

More furnace repairs:

This furnace troubleshooting guide is applicable to all furnace brands including: Carrier, Emerson, York, Goodman, Honeywell, Lennox, Trane, Rheem, Bryant, Coleman, Westinghouse, White Rogers, Nordyne, Honeywell, Kenmore, Frigidaire, Amana


00:00 Intro
00:41 Airflow
01:19 Simple Solutions
02:09 Safety Switches
Furnace cycling on and off? Full Troubleshoot:
02:51 Draft Inducer
Is the draft inducer blower running? Full Repair:
04:04 Ignitor
Does the ignitor glow? Full Repair:
04:36 Gas Valve
05:00 Flame Sensor
Is the flame sensor faulty? Full Repair:
05:30 Flame Rollout Switch
Do flames come out the front of the burner? Full Repair:
06:22 Blower Motor
Does the blower fan run? Full Repair:
06:42 Limit Switch
Is the furnace overheating? Full Repair:


Buy draft inducers:
Buy pressure switches:
Buy ignitors:
Buy flame sensors:
Buy flame roll-out switches:
Buy blower motors:
Buy limit switches:

AMRE Supply provides homeowners, service contractors, and property management with the parts and knowledge needed to get the best performance out of any property. Stocking the largest selection of appliance parts, heating, plumbing, lighting, and janitorial supplies, AMRE ships almost anywhere in Canada within 24 - 48 hours. Expert help is available online, over the phone or in person at one of the many locations across Canada.

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