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BillyHvac
BillyHvac, Journeyman HVAC Tech
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RobertShaw 9420 color code wiring diagram please, colors W

Resolved Question:

RobertShaw 9420 color code wiring diagram please, colors White/Brown/Yellow/Blue/Red/Green/Orange
Submitted: 5 years ago.
Category: HVAC
Expert:  BillyHvac replied 5 years ago.

Depends on what equipment you are controlling...AND the wiring at other end must match thermostat terminals.

 

Red = R

White = W2

Orange = O

Blue = C

Brown =E

Yellow =Y1

Green = G

 

 

BillyHvac and other HVAC Specialists are ready to help you
Customer: replied 5 years ago.
Still won't come on, reset CB, still no power...
Expert:  BillyHvac replied 5 years ago.

Did you have power off to air handler when you changed stat

 

 

Customer: replied 5 years ago.
yes
Expert:  BillyHvac replied 5 years ago.

Did you mimic the terminals at air handler?

If you touch the red wire to green wire with power on does blower activate?

 

 

Customer: replied 5 years ago.
No
Expert:  BillyHvac replied 5 years ago.

 

This means the tramsformer or hopefully fuse is blown in the air handler.

 

You will need to open the air handler and follow the thermostat wires to where they connect. Double check connections to match thermostat and see if there is a blade or tube fuse present.

 

I may be able to assist further with make and model of air handler

 

 

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