Armstrong ultra V 80

Old 01-24-19, 03:13 PM
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Armstrong ultra V 80

We have an Armstrong Ultra V 80 system and right now the system will be set to heat and it will ignite and stay on for roughly 15-30 minutes depending. then it will turn off but the fan keeps blowing and circulates cool air.

The temperature never reaches the goal temp so the house just keeps getting cooler.
does this sound familiar to anyone? any advice?
Old 01-24-19, 05:17 PM
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Welcome to the forums.

There should be a control box with fault LED down in the blower section. Should be a sight glass where you can see thru the door without opening it.

From your description..... the furnace is overheating. Check and make sure the filters are clean, not too many registers are closed and the air return grills aren't blocked.

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