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The display on my thermostat will not come on. I have

Customer Question
buetler model ts40b...
The display on my thermostat will not come on. I have buetler model ts40b
Submitted: 2 years ago.Category: HVAC
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Answered in 2 hours by:
2/4/2016
HVAC Technician: HVAC Guru, HVAC TECH replied 2 years ago
HVAC Guru
HVAC Guru, HVAC TECH
Category: HVAC
Satisfied Customers: 18,652
Experience: 20yrs in the HVAC industry with certificates and degrees.
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Hello and thanks for using this service, if you have been waiting do not worry or get upset I am just one of the techs on here and I try to get to as many customers as I can and I just picked up your question now. Please give me time to respond sometimes I get your replies late so there may be a delay in my response.

Does your thermostat control a regular furnace?

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Customer reply replied 2 years ago
I don't think so. It's ac/heating in one unit I believe.
HVAC Technician: HVAC Guru, HVAC TECH replied 2 years ago

Ok is the thermostat a separate wall one?

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Customer reply replied 2 years ago
I have 2 different wall thermostats - one in main living area, one in master bedroom and neither of the displays will turn on.
HVAC Technician: HVAC Guru, HVAC TECH replied 2 years ago

OK there should be a low voltage fuse on the board in the Heating unit. Often they put a 3-5 amp slot fuse right on the control board in the heating unit. There also could be an inline one, but you should check for that first as if it is blown that will make both thermostats dead.

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