Heat Pumps and Electric Heating - Thermostat RTH7500
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steve1954
02-03-09, 10:16 PM
Just purchased an new Honeywell RTH7500. It cycles off & on every 2 min.on a 28 to 30 degree evening. Example on at 70.1 off at 70.7 on & on what ever the number on heating. Help!
Muggle
02-04-09, 02:07 AM
Make sure that the cycle rate is set to 3 or less if you have a heatpump.
If you have direct electric resistance heating, set the cycle rate to 3 or 5. (Cycling heat strips frequently won't hurt them)
See page 17-21 on the install manual, option 240. (http://customer.honeywell.com/techlit/pdf/PackedLit/69-2104ES.pdf)
If you have direct electric resistance heating, set the cycle rate to 3 or 5. (Cycling heat strips frequently won't hurt them)
See page 17-21 on the install manual, option 240. (http://customer.honeywell.com/techlit/pdf/PackedLit/69-2104ES.pdf)