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    Nearly Retired's Avatar
    Nearly Retired Posts: 4, Reputation: 1
    New Member
     
    #1

    Nov 8, 2007, 05:37 PM
    Honeywell CT8602 Thermostat
    The 'Filter' light flashes permanently, and I think this is a function of running time, not filter condition. Nowhere in the instructions does it tell you how to correct this. Can anyone help?

    Many thanks
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
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    #2

    Nov 8, 2007, 06:10 PM
    Thermostats are powered from the furnace,, turn the breaker off to the furnace for 1 minute and then turn back on,, hopefully it will reset the stat
    Nearly Retired's Avatar
    Nearly Retired Posts: 4, Reputation: 1
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    #3

    Nov 8, 2007, 07:09 PM
    Quote Originally Posted by wmproop
    thermostats are powered from the furnace,,,,,,,turn the breaker off to the furnace for 1 minute and then turn back on,,,hopefully it will reset the stat
    Many thanks, but I tried that already. I THINK that the thermostat program brings up the "Filter" flashing after X hours running time. It is just a reminder, not an indication of the filter condition. I suspect that it can be cancelled by the simultaneous push on two or more of the function buttons - but so far I've not discovered which ones!

    Thanks again
    nchan's Avatar
    nchan Posts: 1, Reputation: 1
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    #4

    Nov 16, 2007, 12:18 PM
    Quote Originally Posted by Nearly Retired
    Many thanks, but I tried that already. I THINK that the thermostat program brings up the "Filter" flashing after X hours running time. It is just a reminder, not an indication of the filter condition. I suspect that it can be cancelled by the simultaneous push on two or more of the function buttons - but so far I've not discovered which ones!

    Thanks again

    This light comes on every 60 days or so. Therefore, the following steps need to be repeated as necessary.

    Step 1: Press once the I (Information) button located at top right, third from top.
    Step 2: Press once the Time up button located in lower section.
    Step 3: Press once the "Run Program" button to finish.

    Now, flashing be-gone! Hope this helps.
    Nearly Retired's Avatar
    Nearly Retired Posts: 4, Reputation: 1
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    #5

    Nov 18, 2007, 09:14 AM
    Dear nchan,

    I've been away for a few days and tried your suggestion just as soon as I got home - and you are absolutely right. Problem solved. Very many thanks - and I hope Honeywell will now include this in their instruction book! Thanks again.
    Nearly Retired's Avatar
    Nearly Retired Posts: 4, Reputation: 1
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    #6

    Nov 18, 2007, 09:15 AM
    Comment on nchan's post
    Suggestion was 100% correct.

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