On the covered Honeywell Home T6 Pro Smart thermostat, alert 183, 184, 185, 186, 187, 188 or 189 means accessory maintenance reminders: 183 Clean Humidifier Tank and Replace Water Filter; 184 Replace Humidifier Pad; 185 Replace Dehumidifier Filter; 186 Clean Ventilator Core; 187 Clean or Replace Ventilator Filter; 188 and 189 Replace UV Bulb. First, match your code to the accessory it names.
Try in this order
0 of 2 completedWhat to do first
ReversibleMatch your code to the accessory it names.
Correct only the documented fault domain
ReversibleThe T6 Pro guide's action for each is to do the named maintenance or contact your heating or cooling professional, then reset the timer by touching Dismiss on the thermostat screen after you are done.
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What does alert 183, 184, 185, 186, 187, 188 or 189 mean on a Honeywell Home T6 Pro Smart thermostat?+
Accessory maintenance reminders: 183 Clean Humidifier Tank and Replace Water Filter; 184 Replace Humidifier Pad; 185 Replace Dehumidifier Filter; 186 Clean Ventilator Core; 187 Clean or Replace Ventilator Filter; 188 and 189 Replace UV Bulb.