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Wiring info to replace Weathertron BAY28X139 with Honeywell RTH6350D

Wiring info to replace Weathertron BAY28X139 with Honeywell RTH6350D

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  #1  
Old 05-30-16, 10:48 AM
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Wiring info to replace Weathertron BAY28X139 with Honeywell RTH6350D

I'm trying to replace a Weathertron BAY28X139 with a Honeywell RTH6350D.

Weathertron has connections labelled:

R
T
O
G
Y
X2 jumpered to W & U
B
F

Honeywell has 2 identifications for each terminal:

Y2 - L
W2 - Aux/E
G - G
W - O/B
Not Used - Not Used
Y - Y
R - R
Rc - Rc

Documentation covers 3 ways of hooking up the Honeywell, none of which match.

Can anyone explain the correct way to hook up the Honeywell, or suggest a different replacement?

Thanks
 
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  #2  
Old 05-30-16, 11:54 AM
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Welcome to the forums.

We need to know what color wires you have on which terminals.
A picture is ok. http://www.doityourself.com/forum/el...-pictures.html

The letters are not just matched between stats. Different stats assign different functions to different letters.

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Old 05-31-16, 12:55 PM
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Wiring photo

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Note: - black had come adrift from F, so AUTO didn't work. Reconnected to F, and it AUTO worked.
 
  #4  
Old 05-31-16, 08:33 PM
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R = RC & R ( 24 volt power)
T = thermostat (Tape off this wire)
O = O/B (reversing valve to cool)
G = G (fan)
Y = Y (compressor)
X2 = Aux / E (heat strips)
B = C (tape off this 24vac common wire)
F = L (fault light) I would tape off this wire as well

F should not be able to control the fan. Could this have been a coincidence?

Remember to remove power to the indoor unit before replacement.
 
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Old 05-31-16, 08:47 PM
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I would have expected to see the black on X2.

Since you're in Md. ..... I'm sure your system has heat strips.
What may have happened is that heat and A/C was coming on at the same time.
 
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