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TERMINAL
CONNECTIONS
EE542-1Z
SMART ENERGY
Terminal Connections
EE542-1Z Smart
Energy Thermostat
Conventional Heat Pump
RC* Power for Cooling Power for Cooling
RH* Power for Heating Power for Heating
C Common Wire Common Wire
W/E 1st Stage Indoor Heat 1st stage Aux/Emergency Heat
W2 2nd Stage Indoor Heat 2nd stage Aux/Emergency Heat
Y2 2nd Stage Outdoor Cool 2nd Stage Compressor
G Fan Fan
O/B Heat pump changeover valve Heat Pump Changeover Valve
L Heat pump diagnostic Heat Pump Diagnostic
* If the you have separate RC and RH wires, remove the RC/RH jumper.
NOTE: This product requires 24V power supply via C terminal to operate.
For complete configuring options, go to for full Installation Instructions.
RC/RH Jumper
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