Carrier 50HCQ Installation Instructions Manual page 22

Table 5 – 50HCQ Defrost Board I/O and Jumper Configurations
Inputs
Point Name Type of I/O
G Fan
Y1 Cool 1
Y2 Cool 2
W1 Heat 1
W2 Heat 2
R Power
C Common
DFT1
DFT 2
Outputs
Point Name Type of I/O
IFO Fan On
OF OD Fan On
RVS1
RVS2
COMP 1
COMP 2
HEAT 2
COM
Configuration
Point Name Type of I/O
Select Jumper
2 Compressor
Speed−Up Configuration
Point Name Type of I/O
Speed-Up Jumper
Speed-Up Jumper
Jumper for 1−3 seconds: Factory Test, defrost runs for 9 seconds
Jumper for 5−20 seconds: Forced Defrost, defrost runs for 30 seconds if DFT2 is open
Switch No.
1 2
1 1
J J
0 0
90 minutes
Fig. 30 − Defrost Control Board Location
Connection Pin Number
DI, 24Vac P2-3
DI, 24Vac P2-5
DI, 24Vac P2-4
DI, 24Vac P2-7
DI, 24Vac P2-6
24Vac P3-1
24Vac P3-2
DI, 24Vac DFT-1 to DFT-1
DI, 24Vac DFT-2 to DFT-2
Connection Pin Number
DO, 24Vac P3-9
DO, 24Vac
DO, 24Vac P3-7 to P3-5
DO, 24Vac P3-6 to P3-4
DO, 24Vac P3-10
DO, 24Vac P3-8
DO, 24Vac E-HEAT
24Vac P3-3
Connection Pin Number
24Vac P1-1
24Vac P1-3
Connection Pin Number
JMP17
JMP18
Table 6 – Dip Switch Position
1 2
J
1
J
0
60 minutes
Unit Connection
CTB-G
CTB-Y1
CTB-Y2
CTB-W1
CTB-W2
CONTL BRD-8
CONTL BRD-4
Unit Connection
REHEAT-2
OF OFR
FPT - REHEAT-6
REHEAT-8
HC-1 (TB4-1)
HC-1 (TB4-3)
Unit Connection
Unit Connection
1 2
J J
1
J
0
30 minutes
22
Note
Note
Energize in COOL
Energize in COOL
Note
Use for 50HCQD
Note
1 2 3
J
1
J
0
120 minutes Fan Delay
C09276
On
Off