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

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Thermastat temp "fixed" and i do not remember how to adjust it up and down.

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  • Josh White May 11, 2010

    I need model # to be able to help.

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  • Honeywell Master
  • 587 Answers

HONEYWELL WEBSITE:
Go to honeywell.com
Under red welcome sign
Bottom red highlighted box literature/image search
Type in thermostat model number
Click on arrow to right
Then click on the PDF files owners manual / installation instructions

Posted on Oct 11, 2009

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First make sure engine is cool.
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-Remove the TOP radiator hose that runs to the metal thermastat housing. Coolant will now be running out, try and direct it to the drain pan below.
-Remove the thermastat housing, BEFORE removing the thermastat make sure you TAKE NOTE at how it is situated in the casting.
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-Insatll new thermastat.
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