How do you reset the filter message on a Honeywell Chronotherm IV Plus Thermostat?
How do you reset the filter message on a Honeywell Chronotherm IV Plus Thermostat?
Sequentially press the I button and then the time up arrow. That will reset the indicator & turn it off. When I did it (based on a phone call to Honeywell, obivously in India) it then briefly displayed "30 days AIR" -- not sure what that's about, but the filter indicator is no longer visible.
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