3
C
EVAPORATOR
FREEZE THERMOSTAT
Y
INDOOR
THERMOSTAT
OUTDOOR
CONTACTOR
A12591
Fig. 2- Evaporator Freeze Thermostat Wiring
Single Stage
EVAPORATOR
FREEZE THERMOSTAT
Y1
INDOOR
THERMOSTAT
C
OUTDOOR
CONTACTOR
LOW PRESSURE SWITCH (LPS)
OUTDOOR UNIT
HIGH PRESSURE SWITCH (HPS)
OUTDOOR UNIT
YEL/PNK
A13053
Fig. 3- Evaporator Freeze Thermostat Wiring
2- Stage Non- Communicating AC
EVAPORATOR
FREEZE THERMOSTAT
Y1
INDOOR
THERMOSTAT
R
W2
O
Y
C
A13054
Fig. 4- Evaporator Freeze Thermostat Wiring
2- Stage Non- Communicating HP
EVAPORATOR
FREEZE THERMOSTAT
Y1
INDOOR
THERMOSTAT
UTIL
C
W1
Y1
Y2
O
A13052
Fig. 5- Evaporator Freeze Thermostat Wiring
2- Stage Communicating AC and HP
