My furnace uses a "reusable" filter whereas I vacuum the dust, etc., off of it every month or so and put it back in.">
Honeywell Furnace Filter

QUESTION:

On my Honeywell Chronotherm IV thermostat, the LED screen is flashing the word "Filter". I cannot find anything in the instruction manual regarding this.
My furnace uses a "reusable" filter whereas I vacuum the dust, etc., off of it every month or so and put it back in.

ANSWER:

The information you need is in the installation manual, which you can find on Honeywell's Web site. This may not be for your specific model, but it might be close enough:
http://hbctechlit.honeywell.com/request.cfm?form=69-1409
[That's a PDF file; you'll need Adobe Acrobat to read it]


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