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Need Help - Old heat pump thermostat 7 wire - to new honeywell rth6350

Need Help - Old heat pump thermostat 7 wire - to new honeywell rth6350


  #1  
Old 08-09-14, 09:29 PM
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Need Help - Old heat pump thermostat 7 wire - to new honeywell rth6350

I have an old Janitrol heat pump 3aat83d21a1, I am replacing it with a Honeywell rth6350d. The Janitrol does have an emergancy heat switch.

Here is how the current thermostat is connected:
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Wires:
G
Y
E
W
C
O
R

Here are the available connections on my new unit:
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L
AUX/E
G
O/B
Not Used
Y
R
RC

I had:
E to E/Aux
Y to Y
G to G
O to O/B
R to R and jumped to RC

It said to not use C.
I am not sure where W goes.
Without W connected, I have the air conditioning working, but not the heat.

Any and all help is greatly appreciated! Thanks in advance!
 
  #2  
Old 08-09-14, 09:34 PM
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You wired it correctly.

You must also configure the new thermostat for heat pump operation with Aux heat. Set function 1 to 5.

Your heat pump is the reverse of most brands so you must also configure the reversing valve to energize for cooling. Function 2 = 0.
 

Last edited by Houston204; 08-09-14 at 09:58 PM.
  #3  
Old 08-09-14, 09:42 PM
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Function 1 is set to 5 correctly.

Function 2 is set to 0, because I have the "O" wire connected to the O/B. Do I need to change that function to 1? (opposite of what it should be?)

Thanks for your help!
 
  #4  
Old 08-09-14, 10:08 PM
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You are correct. 2 = 0
It is getting late. I was thinking of weatherking for some reason.

Did you wait over 5 minutes between the heat and cool demand before giving up on it?
 
  #5  
Old 08-14-14, 05:51 AM
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Just wanted to say thanks again. It is working like a charm!
 
 

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