I have a Robertshaw programmable thermostat and I've just noticed that the Heat Pump will not stop when the temperature is lowered below room level. How do I reset the thermostat or how do I find out if the problem comes from the thermostat or the heat pump.
Tks

Does the thermostat have batteries? If so remove them for a minute or two. Or you can remove the thermostat coverand removed the wire from the R terminal. Chances are, you either have a welded contactor or a low voltage short.

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Originally Posted by hvacservicetech_07

Does the thermostat have batteries? If so remove them for a minute or two. Or you can remove the thermostat coverand removed the wire from the R terminal. Chances are, you either have a welded contactor or a low voltage short.

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Wow! I think somebody stayed at a Holiday Inn Express last night!:p

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Originally Posted by KC13

Wow! I think somebody stayed at a Holiday Inn Express last night!:p

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LOL. I still don't understand that!

If you ever see one of the commercials, it will all make sense. Ordinary people doing extraordinary things, all because they stayed... well, you know where.

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Originally Posted by hvacservicetech_07

Does the thermostat have batteries? If so remove them for a minute or two. Or you can remove the thermostat coverand removed the wire from the R terminal. Chances are, you either have a welded contactor or a low voltage short.

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I'm not sure if it has batteries... I will check the manual and open the front panel to check. Also I just noticed that the backup natural gas heat kicked in but the red light at top of thermostat did not come on... normally it does. So maybe if I remove the thermostat altogether from the wall and remove the batteries if any, then this will reset the thermostat and possibly fix the problem... the low voltage short??

Quote:

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Originally Posted by hvacservicetech_07

Does the thermostat have batteries? If so remove them for a minute or two. Or you can remove the thermostat coverand removed the wire from the R terminal. Chances are, you either have a welded contactor or a low voltage short.

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By the way, my Robertshaw thermostat model is the 300-227 with Emergency Heat Selection