Dometic service manual RM7030 Product No & RM7732

DOMETIC® RM7030/RM7732 Refrigerators

DIAGNOSTIC SERVICE MANUAL

B.AC OPERATION

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

For AC heating element operation, check that voltage is present between the large black and large white wire at the circuit board. If voltage is below 100 volts, the circuit board will select another mode. If voltage is above 100 volts, check that AC volts are present at the heating element connection. If no voltage is present, change the circuit board.

NOTE: Before installing a new circuit board, correct the cause of the failure, most likely it is the heating ele- ments or wiring.

If voltage is present, DO NOT CHANGE THE CIRCUIT BOARD. Check the following components: heating elements, upper circuit board, thermostat and wiring.

C.GAS OPERATION

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

Before you check the circuit board for gas operation, verify these components are good:

Igniter (Sec 5.5A)	HighVoltageCable(Sec. 5.6A)
Electrode (Sec. 5.11)	Solenoid (Sec. 5.4A)

UpperCircuitBoard(Sec. 5.8A to 5.8I)

Thermostat (Sec. 5.1)

Also be sure NO voltage is present at the

IGN lock terminal, and delay mode is not	YELLOW
activated. First, check that voltage in
excess of 10.5 volts is between the yellow
terminal on the 6-pin connector (positive
[+] lead from meter) to the ground strip
(negative [–] lead from meter). If less than
10.5 volts, correct wiring and/or power	6 Pin
source problem.

Next, check for the pulse voltage from the igniter at the orange terminal on the 6-pin connector (negative

[–]lead from meter) and the ground strip (positive [+] lead from meter). If there is no signal voltage, check the igniter (see Sec. 5.5A) and the orange wire and connections. If signal voltage is present, next check

for voltage on the solenoid wires at the	ORANGE
circuit board. Positive lead from meter to
the gray wire and negative lead from the
meter to the black wire. If voltage is 9.5
volts or more, the circuit board is good. Do
not replace. If no voltage is present, replace
the circuit board.	6 Pin

D.DC VOLTS TO UPPER CIRCUIT BOARD

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

This check is to determine if the
lower circuit board is providing	BLUE	BROWN
voltage to the upper circuit board.
Measure between the brown
terminal on the 10-pin connector
(positive [+] lead from meter) to
the blue terminal on the 7-pin
connector (negative [–] lead from	7 Pin	10 Pin
meter). A voltage reading indi-

cates the circuit board is good. If

no voltage is present, replace the circuit board. NOTE: Before changing the circuit board, be sure all troubleshooting steps have been followed.

RM7030 (Product No. 921890401) & RM7732

E. DC VOLT: ALL TESTS ARE TO BE DONE WITH THE REFRIGERATOR IN THE COOLING MODE.

Before any checks are made, make sure the board is receiving proper DC volts. Measure volts between terminal J4 and the ground strip. Voltage should be the same as at the positive (+) and negative (-) on the terminal block. If not, check for loose connec- tions.

F. AC MODE: NOTE: The PAL tester will allow for proper testing of the integrity of the upper and lower circuit boards. PAL is available from your Dometic parts distributor.

ALL TESTS ARE TO BE DONE WITH THE REFRIG- ERATOR IN THE COOLING MODE.

For AC heating element operation, check that incoming AC voltage is present at terminals J5 and J6 on the circuit board. If voltage is below 100 volts, see Sec. 2.

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