Dometic RM3604 Diagnostic Service Manual Download

Page: 10 / 16

DIAGNOSTIC SERVICE MANUAL

Dometic

RM3604/3804 AES

Refrigerators

BROWN

ORANGE

10 Pin

7 Pin

YELLOW

BROWN

10 Pin

7 Pin

BROWN

10 Pin

7 Pin

GREEN

With the mode switch (?) manually depressed

With the mode switch (?) manually depressed:
An ohms reading should be
indicated between the brown
terminal on the 10-pin connector
(negative[–] lead from meter) to
the orange terminal on the 7-pin
connector (positive [+] lead from
meter). The ohms reading should
be approximately 26,000. You
should NOT

NOT

NOT have a reading unless the mode switch

(?) is depressed.

NOTE

NOTE: If the check on 12-volt mode lamp and switch
is not correct, verify the wire harness has continuity.
If wire harness is good, replace the upper circuit
board.

10. Delay Mode Lamp and Switch

Delay Mode Lamp and Switch

NOTE

NOTE: The following checks should be made on the
upper circuit board and harness assembly BEFORE
replacing the upper circuit board or wiring harness.
The checks are to be done with the wiring harness
REMOVED from the lower circuit board, and the
OFF-ON switch turned to "ON".

With the mode switch (?) manually depressed

With the mode switch (?) manually depressed:
Resistance should be indicated between the brown
terminal on the 10-pin connector (negative [–] lead
from meter) to the yellow termi-
nal on the 7-pin connector
(positive [+] lead from meter).
The proper resistance is approxi-
mately 26,000 ohms.

With the mode switch (?) NOT

With the mode switch (?) NOT
depressed

depressed

depressed: A reading would
NOT

NOT

NOT be indicated.

NOTE

NOTE: If the check on the delay mode lamp and
switch is not correct, verify the wire harness has
continuity. If wire harness is good, replace the upper
circuit board.

11. Gas Mode Lamp and Switch

Gas Mode Lamp and Switch

Gas Mode Lamp and Switch:

NOTE: The following checks should be made on the
upper circuit board and harness assembly BEFORE
replacing the upper circuit board or wiring harness.
The checks are to be done with the wiring harness
REMOVED from the lower circuit board, and the ON-
OFF switch turned to "ON".

With the mode switch (?) manually depressed

With the mode switch (?) manually depressed:
Resistance should be indicated
between the brown terminal on
the 10-pin connector (negative [–
] lead from meter) to the green
terminal on the 7-pin connector
(positive [+] lead from meter).
The proper resistance is approxi-
mately 26,000 ohms.

With the mode switch (?) NOT depressed

With the mode switch (?) NOT depressed: A
reading would NOT

NOT

NOT be indicated.

NOTE

NOTE: If the check on gas mode lamp and switch is
not correct, verify the wire harness has continuity. If
wire harness is good, replace the upper circuit board.

12. Gas Flame Warning Lamp

Gas Flame Warning Lamp

Gas Flame Warning Lamp:

Measure resistance between the brown
terminal on the 10-pin connector (nega-
tive [–] lead from meter) to the black
terminal on the 10-pin connector (positive
[+] lead from meter). The proper resis-
tance is approximately 22,000 ohms.

NOTE

NOTE: If the check on gas flame warning
lamp is not correct, verify the wire harness has
continuity. If wire harness is good, replace the upper
circuit board.

4.10

4.10 CIRCUIT BOARD

CIRCUIT BOARD

The circuit board controls all modes of operation.

THESE PROCEDURES MUST BE FOLLOWED
IN SEQUENCE AND AT THE PROPER TERMI-
NALS OR DAMAGE TO THE BOARD WILL
RESULT.

Before any checks are to be done, be sure proper
DC volts are to the board (see Sec.
3.1). Measure volts between yellow
terminal on the 6-pin connector (posi-
tive [+] lead from meter) to green
terminal on 6-pin connector (negative [–
] lead from meter). Voltage should be
the same as at the positive (+) and
negative (–) terminal block. If not,
check the fuse (see Sec. 4.11) and
wiring (see Sec. 7.2).

THESE PROCEDURES MUST BE FOLLOWED
IN SEQUENCE AND AT THE PROPER TERMI-
NALS OR DAMAGE TO THE BOARD WILL
RESULT.

BLACK

BROWN

10 Pin

YELLOW

GREEN

6 P IN