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MattR757
MattR757, HVAC Technician
Category: HVAC
Satisfied Customers: 43
Experience:  18+ Years experience in residential and commercial HVAC service and repair
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The word "filter" keeps flashing on the thermostat control

Customer Question

The word "filter" keeps flashing on the thermostat control screen. I've changed the filters. It still flashes when the filters are removed. What do I need to do?
Submitted: 2 years ago.
Category: HVAC
Expert:  MattR757 replied 2 years ago.

MattR757 :

Hi. There is likely a reset procedure to clear the filter indicator. What brand of thermostat do you have?

MattR757 :

Sorry... My connection is dreadful today. Most thermostats just have a timer that tells when to change the filter. The timer has to be reset once the indicator lights up. The procedure is different for almost every thermostat brand, but should be in the owners manual. If you tell me what thermostat you have I'll help you find the right procedure.

MattR757 :

I'll check back with you in a little while -

Customer:

The thermostat is a Honeywell.

MattR757 :

Does it have a button with the letter i above the temperature buttons?

JACUSTOMER-euz322oo- :

Yes. The make is a honeywell chronotherm iv plus

MattR757 :

Ok. - To reset the filter indicator you press the "i" button until you see the filter indicator - It will show 0 days left - then press the time up button (next to the wake button) to reset the timer the 0 - then press run program

MattR757 :

you have to press the i button more than once to cycle through the different options

JACUSTOMER-euz322oo- :

'Filter" has stopped flashing, but it appears now that a program has been set. Thanks for your help. We will have our local hvac tech reprogram our thermostat when he comes for the summer checkup.

MattR757, HVAC Technician
Category: HVAC
Satisfied Customers: 43
Experience: 18+ Years experience in residential and commercial HVAC service and repair
MattR757 and 3 other HVAC Specialists are ready to help you
Expert:  MattR757 replied 2 years ago.
you can press the hold button to bypass the program and just use the temp up and down buttons to set your desired temperature.
Expert:  MattR757 replied 2 years ago.

As long as the word HOLD is in the display the thermostat doesn't follow the program.

 

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