Service manual

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The first step to take is to insure that the 12
volt DC power supply and it’s associated
wiring is providing the proper DC voltage to
operate the electronic circuitry correctly.
Remember without a proper DC hookup to the
refrigerator’s terminal block, the unit will not
operate on any heat source.
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Check the incoming battery voltage at the
terminal block to insure that between 10.5 to
13.5 volts are present and that the correct wire
polarity has been utilized in the installation.
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Second, make sure the negative battery lead
connects to the negative connection on the
terminal block and the positive battery lead
connects to the positive connection on the
terminal block. As we stated earlier in the
program,
check to see that the 12 volt
refrigerator circuit is wired as shown in this
diagram. Correct this if necessary. (Also see
page A-6-27).
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Third, inspect that the proper gauge wire has
been used as illustrated in the chart shown
here. (Also see page A-6-26)
REFRIGERATOR
TERMINAL BLOCK
RECOMMENDED WIRE GAUGE AND LENGTH FOR
AES MODEL REFRIGERATORS
AWG
Wire Length
RM3500
RM3600 RM3800
10 19 ft. 13 ft. N/A
8 31 ft. 22 h. 19 ft.
6 49 ft. 34 ft. 31 ft.
1st
and 2 n d g eneration “ti models
8
27 ft. 27 ft.
3rd generation models.
A-6-33