Page 12 of 13
507296-01
Issue 1650
3
3
BLK
RED
YEL W/ STRIPE
RED
T2
C
H
F
BLK
GRY
RED
BLK
208V
240V
BLU
YEL
NO
NC
C
BLOWER CONTROL
NC
C
BLK
C
G
XFMR-R
R
XFMR-C
W1
C
L
R
O
Y1
FAN
HI-PS
24 V
Y
W2
RED
YEL
BLU
WHT
GRN
ORG
RED
BLU
BLU
YEL
BLU
W1 & W2 CAN BE USED TO STAGE ELECTRIC HEAT ACCESSORY ON 10,15 & 20KW MODELS
5 & 7.5 KW HEATER ACCESSORIES FUNCTION OFF W1 ONLY.
BLK
DEFROST CONTROL
WHT
DEFROST CONTROL
J2-2
J2-4
J2-6
J2-5
WHT
BLK
MOTOR
SPEED TAPS
208/230V-1-60
BLOWER SPEED CHART
UNIT
FACTORY SHIPPED SETTINGS
COOLING INPUT
(BLK)
42
48
G
W1
C
R
O
THERMOSTAT
L1
T1
COMPRESSOR CONTACTOR
COMPRESSOR CONTACTOR
DUAL CAPACITOR
COMPRESSOR
TRANSFORMER
C
S
R
L2
537660-01
CONNECTION DIAGRAM - HEAT PUMP
(PSC BLOWER) SINGLE PHASE
24V
NOTE: IF ANY OF THE ORIGINAL WIRE IS REPLACED THE SAME SIZE AND TYPE WIRE MUST BE USED. USE COPPER CONDUCTOR ONLY, MIN 75
C WIRE
LINE VOLTAGE FIELD INSTALLED
WARNING- ELECTRIC SHOCK HAZARD. UNIT MUST BE GROUNDED IN ACCORDANCE WITH NATIONAL AND LOCAL CODES.
SEE CHART FOR WIRING
FUSE
BLOWER CONTROL
DIAGNOSTIC CODES FOR DEFROST CONTROL LEDS
Note: Because the Pressure Switches are monitored only when "Y1" (Input) is active, the code for pressure switch open will not be seen when "Y1" is off. Instead, the "Normal Operation" or "Anti Short Cycle" code will be seen. Also, when a pressure switch opens and caused a short cycle lockout, the pressure switch-open code will be seen until it closes, then the short cycle lockout code will flash unless it has already expired.
(See instructions or markings on System Diagnostic Module for codes of System Diagnostic Module)
YELLOW W/ STRIPE
BLK
5
4
3
2
1
K1-1
INDOOR BLOWER MOTOR
H
M
L
C
2
3
4
1
B3
CAPACITOR
C4
ORG
BLK
FAN
CONDENSER FAN MOTOR
PUR
J1-2
J1-1
J1-3
B4
K1-2
J2-1
CMC1
C12
J2-3
B1
T1
CONTACTOR
K1
HIGH PRESSURE
SWITCH
THERMAL PROTECTION
SWITCH (IF USED)
S173
S4
J1-11
J1-12
O-OUT
LO-PS
DF
COMMON
Y1 OUT
REV. VALVE
DEFROST T'STAT
LOW PRESSURE
SWITCH
GRY
GRY
BLK
BLK
BRN
BRN
BLU
L1
S79
S6
J1-5
J1-6
J1-8
J1-9
J1-7
J1-10
A-15
CMC1
J1: PLUG THROUGH CONTROL PANEL (12 PIN)
J2: PLUG FOR ACCESSORY HEAT (6 PIN)
CONTROL CIRCUIT WIRING TO 24 VOLT, NEC CLASS-2
S1
FLOAT SWITCH
(IF USED)
YEL
YEL
CRANK CASE HEATER (IF USED)
BLK
BLK
HR1
Description
DS2 (GREEN)
DS1 (RED)
No Power to Control
OFF
OFF
Normal Operation / Power to
Control
Simultaneous Slow Flash
Anti-Short Cycle Lockout
Alternate Slow Flash
Low Pressure Switch Fault
OFF
Slow Flash
Low Pressure Switch Lockout
OFF
ON
High Pressure Switch Fault
Slow Flash
OFF
High Pressure Switch Lockout
ON
OFF
Figure 10. Connections Diagram - Heat Pump PSC
