Honeywell RTH8500D インストールガイド

SETUP

WIRING

ASSIST

ANCE

TROUBLESHOO

TING

Leave metal jumper in place, connecting R & Rc 

terminals.
If your old thermostat had both V and VR wires, 

stop now and contact a qualified contractor for 

help.
If your old thermostat had separate O and B 

wires, attach the B wire to the C terminal. If 

another wire is attached to the C terminal, stop 

now and contact a qualified contractor for help.
If your old thermostat had Y1, W1 and W2 wires, 

stop now and contact a qualified contractor for 

help.

If L terminal is used, C terminal wire must be 

connected (contact a contractor if there is no C 

wire).
If E and Aux terminals do not each have a wire 

connected, use a small piece of wire to connect 

them to each other.

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M28077

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