Question about Honeywell Electronic Programmable Heat/Cool Thermostat - CT3300A100 Heater

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Locked themostat i have an ultrastat thermostat (honeywell) older model it says LOC and we dont have manual. how do we unlock it

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Go to this link, www.honeywell.com. In the search box, type in the model number.

Posted on Aug 07, 2008

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