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Digital, programmable Thermostat to replace mercury on Rheem RPLA-025JAZ

Asked Dec 1, 2011, 04:10 PM — 4 Answers
I felt quite confident after doing this myself until I just realized that the heat pump never comes on (fan never turns in outside unit). I'm getting great heat but my first month's bill was very high. Am I totally running on auxillary heat? How do I rewire the White-Rogers thermostat to correct this?

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wmproop's Avatar
wmproop Posts: 3,732, Reputation: 554
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#2

Dec 1, 2011, 07:48 PM
the model number of new stat. is needed,,also tell us how you wired the tstat wires.
hold on to your install instructions and instructions as to how to program the tstat

get back to us with more info
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Meena54's Avatar
Meena54 Posts: 5, Reputation: 10
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#3

Dec 2, 2011, 01:58 AM
White-Rodgers 1F78 5/2 Day Programmable Thermostat
Wiring photo attached.
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Meena54's Avatar
Meena54 Posts: 5, Reputation: 10
Junior Member
  
#4

Dec 2, 2011, 02:48 AM
I think I figured it out. I have a thermostat that only works with one stage heating and my heat pump is two stage.
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wmproop's Avatar
wmproop Posts: 3,732, Reputation: 554
Ultra Member
  
#5

Dec 2, 2011, 05:14 AM
good deal,,,Yes you need a tstat with 2 stage heat and 1 cool
on the 2 stage,,one is for heatpump the other is for aux. furnace
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