I'm not a heating and air guy by trade but this was pretty simple swap out. I took an old Lennox thermostat out for my grandmother and put this Honeywell CT87K model in that she got from Lowes.
I've mounted it, leveled it and made the two wire connections (red and white) and it operates the furnace fine. She has a Ruud High Efficiency Oil/Forced Air system. However I'm having to turn the thermostat up to about 76 to get it to kick on and warm up to the targeted 68 mark she's looking for. I've set the switches on the back for high efficiency air per the manual. I've tried setting them back to normal forced air settings with no luck as well. Am I missing something or do I have a faulty thermostat?
Any input is appreciated. I'm a floor and paint guy so this isn't really my department but I never had an issue like this with the old T87 model that still had a mercury switch.
Thanks.
I've mounted it, leveled it and made the two wire connections (red and white) and it operates the furnace fine. She has a Ruud High Efficiency Oil/Forced Air system. However I'm having to turn the thermostat up to about 76 to get it to kick on and warm up to the targeted 68 mark she's looking for. I've set the switches on the back for high efficiency air per the manual. I've tried setting them back to normal forced air settings with no luck as well. Am I missing something or do I have a faulty thermostat?
Any input is appreciated. I'm a floor and paint guy so this isn't really my department but I never had an issue like this with the old T87 model that still had a mercury switch.
Thanks.