Whirlpool Furnace: Won't Start or Turn On
Commonly a faulty igniter, a dirty flame sensor, or a blower or control fault. Add a photo of your Whirlpool Furnace in the box below: the Triage Profile says what it is, how urgent it is, and who to call.
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In the next five minutes
Safe first steps, before the call. Nothing here needs a tool.
If you smell gas, a carbon monoxide alarm sounds, or anyone feels dizzy or sick: don’t touch any switch or plug, leave and get everyone out, then call 911 or the gas company from outside.
No gas smell? Switch the furnace off at the thermostat and at its breaker.
Don’t use it again until it’s checked, and keep people away from it.
Everything else about this problem
Is it an emergency?
Is a Whirlpool furnace that won't start an emergency?
Usually not, but it can be. Because this can be an emergency, leave it off and get it checked; don't reset it or turn it back on. Stop and call a pro if it keeps tripping the breaker, smells like burning, or you smell gas.
Symptoms & causes
Your Whirlpool furnace shows no signs of life, meaning the fan isn't running, there's no heat, and indicator lights remain off, suggesting a complete power interruption or system lockout. This often points to a tripped circuit breaker, a blown fuse, a malfunctioning thermostat not calling for heat, or a safety switch being activated. Less commonly, it could be a control board failure or a blocked exhaust vent preventing ignition.
Tools & parts
You'll need a basic multimeter to test for voltage at various points and potentially new AA or AAA batteries for your thermostat. A new furnace air filter, specific to your Whirlpool model, might be required if the old one is severely clogged. Additionally, a screwdriver set for accessing panels and a flashlight for visibility are essential, though these are common household items with minimal cost.
Safety first
Always shut off the main electrical power to the furnace at your home's circuit breaker panel before performing any inspection or repair to prevent electrical shock. If your Whirlpool furnace is gas-fired, locate and turn off the gas supply valve near the unit to mitigate the risk of a gas leak or explosion. Be cautious of hot surfaces inside the furnace, especially around the heat exchanger and burner area, even after the unit has been off for a while.
When to call a pro
If your Whirlpool furnace's control board shows no status lights or error codes despite power, it likely indicates a complete board failure requiring professional replacement. A faulty ignitor or flame sensor that prevents the burners from lighting after the draft inducer starts suggests a specialized component failure best handled by a technician. Issues with the gas valve not opening or closing properly, or persistent gas odors, are critical safety concerns that demand immediate attention from a certified HVAC professional.
Questions people ask
Why is my Whirlpool furnace not responding after a power outage?
A power outage can trip the furnace's circuit breaker or activate a safety lockout feature. Check your home's electrical panel for a tripped breaker and reset it, then try cycling the furnace power switch off and on.
What does it mean if my Whirlpool furnace hums but doesn't start?
A humming sound without ignition often indicates a problem with the draft inducer motor or a blocked exhaust vent. Ensure the exhaust and intake vents are clear of obstructions like snow or debris.
How do I reset my Whirlpool furnace?
To reset, first turn the thermostat to the "Off" position. Then, locate the furnace's power switch (usually on the side of the unit) and turn it off for 30 seconds before turning it back on.
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What it is, how urgent, who to call
Add a photo of your Whirlpool Furnace in the box at the top. The Triage Profile says what it is, how urgent it is, and who to call.