Honeywell Programmable Thermostat Heater
Problem for Honeywell Programmable Thermostat Heater

What does -AC mean on a Honeywell programmable




By bobmillner on Nov 08, 2009

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What does -AC mean on a Honeywell programmable Chronotherm III thermostat display? The owners manual makes no mention of this display.

Solution #1

posted on Nov 08, 2009
Not Rated)

roniecon

Rank: Guru 
Rating: 88%, 680 votes
If it is just a heater,it means no power.
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