Question about Honeywell Electronic Programmable Heat/Cool Thermostat - CT3300A100 Heater

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My Honeywell 8501 thermostat has

My Honeywell T8501 thermostat has no display

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  • Cdaligou May 02, 2009

    My Honeywell T8501 Chonotherm IV Thermostat has no display and AC is not working. Do we need to replace the thermostat?

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Ceck for a full condensate pump or a float switch at the drain pan. In most cases we set these up that way to make you aware of a problem. Often the condensate pumps get slimy and need to be cleamed yearly.

Posted on Mar 12, 2009

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My Honeywell Programmable Thermostat RTH2410 operates intermittently, the entire unit , display and all, turns on and off at various times throughout the day.


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You need to reset the t-stat and totally reprogram it...
Look in your manual how to do that or...


Here is a tip that tells you how to get a manual for most any Honeywell product online...

Manual Honeywell How to Find Honeywell Manuals

heatman101

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