Emerson 543-0033-02 - Page 8

7
Figure 10: Air Conditioning or Heat Pump Schematic 543-0033-02, 943-0033-00
Figure 9: Air Conditioning or Heat Pump Schematic 543-0032-00
Solid Line shows field
Dashed line shows thermostat
Comfort Alert
LPCO HTCO
HPCO
Indoor Unit
HTCO High Temperature Cut Out Switch
HPCO High Pressure Cutout Switch
LPCO Low Pressure Cut Out Switch
Schematic Abbreviation Description
CC Compressor Contactor
Single Stage Indoor Thermostat
inst alled wiring .
demand wiring in system without
HTCO, LPCO and Defrost.
Diagnostics Module
543-0032-00
Terminal Block
Y
R
C
LY1
LY1
ECB
ECB Electronic Control Board
( Defrost Board )
C
C
R
R
L
Solid Line shows field
Dashed line shows thermostat
Comfort Alert
LPCO HTCO
HPCO
Indoor Unit
HTCO High Temperature Cut Out Switch
HPCO High Pressure Cutout Switch
LPCO Low Pressure Cut Out Switch
Schematic Abbreviation Description
CC Compressor Contactor
2nd Stage Indoor Thermostat
inst alled wiring.
demand wiring in system without
HTCO, LPCO and Defrost.
Diagnostics Module
543-0033-00
Terminal Block
Y
R
C
LY1
LY1
ECB
ECB Electronic Control Board
( Defrost Board )
C
C
R
R
L
Y2
Y2
Y2
Ultra Tech
Solenoid
WARNING
Hazardous voltage inside air conditioning system. Discon-
nect power before installing or servicing module. Module
must be installed and serviced only by qualified personnel.