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Old 05-15-2019, 07:26 PM   #1
LIW
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Heater (furnace) short cycling

My Atwood heater is short cycling. I have taken off the cover and do not see any lights on the panel lit up. Thought it may have been the propane regulator (i have a dual tank regulator that hooks up to both tanks with a dial that determines which tank i use), but when i check the stove, i get a strong propane flame.

Any suggestions of what to look for?
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Old 05-16-2019, 12:11 PM   #2
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Short cycling can be caused by the thermostat. Which thermostat do you have?
Has it ever ran normally?

It could also be caused by a few other things. Describe exactly what's happening?
How long does it run before it shuts down?
If you turn off the thermostat and turn it right back on will it start back?
Does it make any odd sound just before it shuts down?
Are any of the registers blocked?
Is there good airflow out all the registers?
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Old 05-16-2019, 12:23 PM   #3
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Is the cold air return blocked by a cooler, case of beer or soda, anything that could block more than 25% of the intake grill?
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Old 05-17-2019, 09:51 AM   #4
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Usually short cycling is caused by the high limit switch being activated. It's either a lack of airflow (blocked vents/intake) or a bad switch.
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Old 05-19-2019, 08:22 PM   #5
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Quote:
Originally Posted by Abendage View Post
Usually short cycling is caused by the high limit switch being activated. It's either a lack of airflow (blocked vents/intake) or a bad switch.
Or, a slow blower motor.
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