3
For heat pump installations, dip switch #6 must be set to match the
appliance changeover valve. Refer to appliance manufacturers sys-
tem specifications for required setting.
- ON = “B” – Cooling is default, switches over to Heat
- OFF = “O” – Heating is default, switches over to Cool
If more than one appliance type (dip switch 1-5) is selected,
error code will be displayed.
System Dip Switch Configurations
1 –
PTAC (Packaged Terminal Unit)
Factory Default
2 –
FCU
(Fan Coil Unit / Mini-Split)
3 –
WSHP
(Water-Source Heat Pump)
4 –
HWSHP
(Hybrid Water Source Heat Pump)
5 –
UNTY
(Unitary AC/Furnace)
6 –
O/B Terminal Selection
(Heat Pump Only)
