Carrier 48FK Controls Operation And Troubleshooting page 6

OUTPUT PIN-
TERMINAL
J6-1
J6-2
J6-3
J6-4
J6-5
J6-6
J6-7
J6-8
J5-1
J5-2
J5-3
J5-4
J5-5
LEGEND
ALM — Alarm
CR — Control Relay
ECR — Economizer Close Relay
EOR — Economizer Open Relay
HIR — Heat Interlock Relay
IFC — Indoor (Evaporator) Fan Contactor
OFC — Outdoor (Condenser) Fan Contactor
U — Unloader
LEGEND
CR — Control Relay
J — Terminal Pin Connectors
K — Relay
Table 3 — Output Pin and Terminal Assignments
NAME
Stage 1
Compressor Relay (K1)*
Stage 2
Compressor Relay (K2)*
Stage 3
Compressor Relay (K3)*
Stage 4
Compressor Relay (K4)†
Stage 5
Compressor Relay (K5)†
Stage 6
Compressor Relay (K6)†
Economizer Open Relay (K7)
Economizer Close Relay (K8)
Supply Fan Relay (K9)
Morning Warm-Up Relay (K10)
Stage 1 Condenser
Fan Relay (K11)
Stage 2 Condenser
Fan Relay (K12)
External Alarm Relay (K13)
Fig. 5 — Relay Board
RATING
24 vac
115 vac
*Circuit 1.
†Circuit 2.
**U2 is not used on 044 units.
††OFC2 on 034-048 units; OFC3 on 054-104 units.
Used on 054-104 units only.
6
DEVICE
CR1
U2**
U1
Not Used
CR2
Not Used
EOR
ECR
IFC
HIR
OFC2/OFC3 ††
OFC4
ALM