SW 1 - Equipment Type Switch 1 sets the equipment type. For heat / cool
equipment, set the switch to the OFF position
(factory default). For heat pump equipment, set
switch 1 to the ON position.
SW 2 - Fan or Reversing Valve Heat Cool Logic (SW 1OFF).
For gas systems, set the switch 2 to the OFF position
For electric heat systems, set switch 2 to the ON position.
Heat Pump Logic (SW 1 ON).
For ‘O’ reversing valve, set switch 2 to the OFF position
For ‘B’ reversing valve,
set switch 2 to the ON position.
SW 3 - Short Cycle Timer For 4 minutes short cycle protection, set switch 3 to
the OFF position (factory default). For no short
cycle protection, set switch 3 to the ON position.
SW 4 - Fossil Fuel Mode This is a USA requirement - leave OFF in Australia
For conventional heat pump equipment,
set switch 4 to the OFF position (factory default).
For fossil fuel equipment, set switch 4 to the ON
position.
SYSTEM SWITCH FUNCTIONS
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