How do I Reset my Furnace after it Stops Working?

If your furnace has stopped working due to a safety shutdown—often indicated by the system blowing cold air or displaying specific error codes—you can attempt to reset it using these steps:

1. Locate the reset button: This is typically a red or yellow switch found near the blower motor.
2. Engage the reset: Press the button firmly and hold it for 3–5 seconds.
3. Wait for ignition: Give the furnace 1–2 minutes to attempt to restart its ignition sequence.

Important Safety Note: If the system does not restart or continues to blow cold air, do not press the reset button repeatedly. Multiple attempts can cause further strain on the system components.

If the reset does not resolve the issue, we recommend checking the following before calling for service:

• Thermostat Settings: Ensure it is set to “Heat” and the target temperature is higher than the current room reading.
• Power Supply: Confirm the circuit breaker hasn’t tripped and the furnace’s side power switch is engaged.
• Air Filter: A clogged filter can cause overheating and trigger a shutdown. Replace the filter if it appears dirty.

With over 25 years of experience in Calgary, we know how critical a working furnace is during our winters. If your unit still won’t restart after two reset attempts, or if you smell gas, please contact us immediately for professional assistance.

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