Figure 2-6 Control Relay Board View - Carrier SUPRA 850Mt Operation And Service Manual

This control relay board allows a better maintenance using pin connections ( TP01 to TP
17 ).
With a multimeter, an output voltage can be measured, pin by pin, to check relays power
supply.
FUSE IDENTIFICATION
Rep. Item
F1 Main fuse
F2 RCR fuse
F3 Run Relay fuse
F4 Heater relay fuse
F5 Speed relay fuse
F6 Unloader fuse
F7 Defrost damper relay fuse
F8 Electric fan motor fuse
F9 Electric fan motor fuse
F10 Electric fan motor fuse
F11 Fuel pump fuse

Figure 2-6 Control relay board view

Amps
60 A
5 A
15 A
10 A
5 A
3 A
7.5 A
7.5 A
7.5 A
5 A
3 A
Rep.
SSR
CAR
CR1,2,3
EHR1,2,3
FLR
UFR
FHR
SR
HGR1,2,3
DER
RR1,2,3
GPR
RCR
MHR
RBPR
2-10
RELAY IDENTIFICATION
Item
Starter solenoid relay
Capacitor alternator relay
Cool relay (1st , 2nd , 3rd compartment)
Electrical heat relay
(1st , 2nd , 3rd compartment)
Flashing relay
Unloader front relay
Fuel heater relay (option)
Speed relay
Hot gas relay
(1st , 2nd , 3rd compartment)
Diesel electric relay
Run relay (1st , 2nd , 3rd compartment)
Glow plug relay
Run control relay
Main heat relay
Regulation by- -pass relay
62--611XX- -20 (03/04)