TM 10-8145-222-23
0005
MAINTAINER MAINTENANCE REFRIGERATION UNIT TROUBLESHOOTING PROCEDURES
(FAULT CODES AL0 AL3, AL8)
Microprocessor Control Box Component Identification
Table 1 and Figures 1, 2, and 3 provides identification and location information for all components contained within
the model MTRCS01 microprocessor control box. Table 2 and Figures 3.1 and 3.2 provides identification and location
information for all components contained within the model MTRCS02 microprocessor control box.
Table 1. Microprocessor Control Box Component Identification for Model MTRCS01.
MPC Box
Figure
Item
Component
Location
Nomenclature
1
1
Fuse
Back Wall
F11-4A
1
2
Fuse
Back Wall
F2-5A
1
3
Fuse
Back Wall
F3-25A
1
4
Fuse
Back Wall
F4-15A
1
5
Fuse
Back Wall
F5-7.5A
1
6
Fuse
Back Wall
F7-10A
1
7
Fuse
Back Wall
F8-10A
1
8
Relay
Back Wall
Run Control Relay (RCR)
1
9
Relay
Back Wall
Speed Relay (SR)
1
10
Relay
Back Wall
Defrost Relay Compartment 1 (1DR)
1
11
Relay
Back Wall
Run Relay Compartment 1 (1RR)
1
12
Relay
Back Wall
Cool Relay Compartment 1 (1CR)
1
13
Relay
Back Wall
Hot Gas Relay Compartment 1 (1HGR)
1
14
Relay
Back Wall
Glow Plug Relay (GPR)
1
15
Relay
Back Wall
Diesel Electric Relay (DER)
1
16
Relay
Back Wall
Defrost Relay Compartment 2 (2DR)
1
17
Relay
Back Wall
Run Relay Compartment 2 (2RR)
1
18
Relay
Back Wall
Cool Relay Compartment 2 (2CR)
1
19
Relay
Back Wall
Hot Gas Relay Compartment 2 (2HGR)
1
20
Relay
Back Wall
Starter Solenoid Relay (SSR)
1
21
Relay
Back Wall
Main Heat Relay (MHR)
1
22
Diode Block
Back Wall
Diode Block 1 (DB1)
1
23
Diode Block
Back Wall
Diode Block 2 (DB2)
1
24
Diode Block
Back Wall
Diode Block 3 (DB3)
1
25
Relay
Back Wall
Run Relay (RR)
1
26
Relay
Back Wall
Run Control Relay (RCR1)
1
27
Protector
Back Wall
Overload Protector (OL)
