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Old 06-22-2009, 01:24 PM   #1
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Replacing thermostat......................


I have an older White Rodgers Digital Comfort Set II programmable heat pump thermostat (1F92-71) which is connected to a Rheem single stage heatpump with electric strip backup heat. The thermostat is giving up the ghost so I'm replacing it with a 1F95-1291. I have a couple of questions on the wiring:

1. The old thermostat has the white wire connected to E1 (emergency) which is jumpered to W2 (second stage heat/Aux). The new thermostat has a single connector labelled W/E (2nd stage heat aux/1st stage heat emergency). I take it they have just combined the E1 and W2 connectors into the W/E connector and I should just connect the white wire to W/E?

2. The old thermostat has the yellow wire connected to Y1 (first stage heat) which is jumpered to W1 (first stage cool). The new thermostat has a single connector labelled Y (1st stage heat/1st stage cool). Again, I take it they have just combined the Y1 and W1 connectors into the Y connector and I should just connect the yellow wire to Y?

3. The old thermostat has the blue wire connected to the B connector (changeover output, heating). I take it I should connect this to the same B terminal (changeover output, heating) in the new thermostat?

Sorry if this is basic, but I want to double check before I mess with a heat pump!


Last edited by sktn77a; 06-23-2009 at 06:43 AM.
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Old 06-23-2009, 06:41 AM   #2
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Replacing thermostat......................


Anybody............. Bueller............ Anybody???


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Old 06-23-2009, 07:21 AM   #3
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Replacing thermostat......................


A Google search with that model will get you to the White Rodgers and detailed wiring instructions.
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Old 06-23-2009, 08:49 AM   #4
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Replacing thermostat......................


Thanks: Yes, I've done that. I have the wiring diagrams from the White-Rodgers site but all they do is identify the terminals as "B", "G", "Y1", etc, but they are different for the two thermostats and neither wiring diagram says which wire to connect to which terminal (just the terminal identification).

So I guess I need a "Gestalt" that my assumptions (above) are reasonable (or not, as the case may be).
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Old 09-02-2009, 07:26 PM   #5
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Replacing thermostat......................


Quote:
Originally Posted by CPERRY View Post
I have a mini fridge that is not getting cold. It is plugged in and also it is a WELBILT model number W73691.
??????? What has this got to do with the price of sliced bread ???????
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Old 09-02-2009, 09:44 PM   #6
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Replacing thermostat......................


Quote:
Originally Posted by sktn77a View Post
I have an older White Rodgers Digital Comfort Set II programmable heat pump thermostat (1F92-71) which is connected to a Rheem single stage heatpump with electric strip backup heat. The thermostat is giving up the ghost so I'm replacing it with a 1F95-1291. I have a couple of questions on the wiring:

1. The old thermostat has the white wire connected to E1 (emergency) which is jumpered to W2 (second stage heat/Aux). The new thermostat has a single connector labelled W/E (2nd stage heat aux/1st stage heat emergency). I take it they have just combined the E1 and W2 connectors into the W/E connector and I should just connect the white wire to W/E?

2. The old thermostat has the yellow wire connected to Y1 (first stage heat) which is jumpered to W1 (first stage cool). The new thermostat has a single connector labelled Y (1st stage heat/1st stage cool). Again, I take it they have just combined the Y1 and W1 connectors into the Y connector and I should just connect the yellow wire to Y?

3. The old thermostat has the blue wire connected to the B connector (changeover output, heating). I take it I should connect this to the same B terminal (changeover output, heating) in the new thermostat?

Sorry if this is basic, but I want to double check before I mess with a heat pump!

Looks like you got the wiring right
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Old 09-02-2009, 10:07 PM   #7
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Replacing thermostat......................


No, I haven't been able to figure it out yet (and I haven't really had the time). Fortunately, it's an attic heatpump system that we rarely use, so I'll tackle it when I have a little more time.

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