Service manual

AES REFRIGERATOR
DIAGNOSTIC FLOW CHART
A.
NO 12 VOLT DC OPERATION
Check supply voltage
1. Polarity
2. Battery supply
-
Correct coach wiring as necessary
(see pgs. A-6-23 to A-6-30,
3. Wire size
NOT
OK
para. 79-84)
B.
OK
Check that refrigerator
is wired directly to
Correct wiring as necessary
12V battery
(see pgs. A-6-27 & A-6-29)
NOT
OK
OK
c.
Check for proper gauge
Rewire w/proper gauge wire as
wire in
12V installation
necessary (see chart on pg. A-6-26)
NOT
D.
OK
OK
I
1
Check ignition lock
terminal for 12V when
ignition key is placed
in the “ON” position only NOT
Repair circuit as necessary
(see pg. A-6-40,
para. 120)
E.
OK
G.
Check DC relay
Check switch
NOT
F.
NOT
OK
Check 12V DC element
NOT ,
Replace relay as necessary
Replace switch as necessary
(see pgs. A-6-41 to
(see pgs. A-6-35 to A-6-36, para.
101-103 8c pgs. A-8-l to
A-6-42, para. 123-l 27)
Replace element as necessary
A-8-5)
(see pgs. A-6-42 to
A-6-43,
para. 128-l 29)
OK
Correct connections and/or
replace printed circuit
board as necessary (see pgs.
H.
OK
Check printed circuit
board & connections
t
NOT OK
A-11-3 to A-11-5)
A-5-3