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RTH6400
15 69-2210EF—03
SETUP WIRING ASSISTANCE TROUBLESHOOTING
Function 2: Heat pump changeover valve
Press the s or t button to select whether your
changeover valve is used in heating or cooling:
NOTE: If Function 2 does not appear, please turn to the
next page to continue.
Done Next
2
0
M28352
Press to change setting.
When correct setting is
selected, press NEXT to
display next function.
M28351
0 Cooling changeover valve: Use this setting if you
connected a wire labeled “O” to the O/B W wire
terminal (see page 21).
1 Heating changeover valve: Use this setting if you
connected a wire labeled “B” to the O/B W wire
terminal (see page 21).