Question about Honeywell CT87B ROUND HEATING&COOLING MECHANICAL THERMOSTAT - WHITE Heater

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Thermostat ct87b My heat system shortcycles and never reaches the set temp.

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  • Anonymous Nov 22, 2008

    I have about the same problem, but mine is turning on every few minutes. It does reach the temp it is set for but it tuens on every few minutes. How do I adjust mine to not do this??

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Your thermostat could be shutting off too soon. What you have to do is take the cover off of the thermostat and look at the bottom right side of the unit. There will be a Zinc plate with little dashs and numbers on it. on top of the plate is a copper triangle, that is what turns the heat off at a certain temp. The triangle is probably out of place and is cycling the heat off before it reaches your set temp. Just carefully adjust the triangle tward the lower left side of the triangle (alittle but at a time) and hopefully that will fix your problem.

Posted on Jan 23, 2008

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