Dometic S1521, S1531, S1621, S1631, S1821 Manual

THE MOST COMMON SYSTEM PROBLEMS ASSOCIATED WITH THE S1521, S1531, S1621, S1631, S1821, S1831, RM2607, RM2611, RM2807, RM2811, RM3607, RM3807, RM3662, RM3663, RM3862, RM3863, RM4872 and RM4873 REFRIGERATORS.

SYMPTOM		CAUSE
1.	No operation - no panel lights	Operation
		DC Volts
		Fuse
		Wiring
		Upper Circuit Board
		Lower Circuit Board
2.	No operation - has panel lights	Operation
		DC Volts
		Thermistor
		Fuses
		Upper Circuit board
		Wiring
		Lower Circuit Board
3.	No AC operation - operates on other mode(s)	Operation
		AC Volts

Fuse

Heating Element

Upper Circuit Board

Wiring

Lower Circuit Board

4.No DC operation - operates on other mode(s)

5.No gas operation - operates on other mode(s)

Operation

DC Volts

Fuse

Heating Element

Upper Circuit Board

Wiring

Lower Circuit Board

Operation

LP Gas

Manual Gas Valve

Igniter

High Voltage Cable

Electrode

Solenoid

Upper Circuit Board

Wiring

Lower Circuit Board

6.	Insufficient cooling on all mode(s).	Ventilation
		Leveling

Ambient Temperature

Air Leaks

Thermistor

Cooling Unit

Thermistor Adjuster

SYMPTOM

7.Insufficient cooling on AC - cools properly on other mode(s)

8.Insufficient cooling on DC - cools properly on other mode(s)

9.Insufficient cooling on gas - cools properly on other mode(s)

10.Freezes

11.Changes preset mode

12. Check light on

13.Interior light on when door is closed

14.Rapid formation of frost

15.Water on frame

CAUSE

AC Volts

Heating Element

Lower Circuit Board

DC Volts

Heating Element

Wiring

Lower Circuit Board

LP gas Orifice Flue Baffle Flue Tube

Flue Cap (if equipped) Burner

Lower Circuit Board

Thermistor

Thermistor Adjuster

Lower Circuit Board

Upper Circuit Board

Operation

DC Volts

Wiring

Upper Circuit Board

Lower Circuit Board

DC Volts

Wiring

LP Gas

Manual Gas Valve

Solenoid

Orifice

Burner

Lower Circuit Board

Thermocouple

Wiring

Door Switch

Door Position

Food Storage

Interior Liner to Frame

High Humidity

Air Leaks

Interior Liner to Frame High Humidity

Air Leaks

Climate Control Heater

ICE MAKER SECTION

SYMPTOM

16.Ice Maker fails to start.

17.Ice Maker won’t make ice.

18.Keeps making ice and won’t shut off.

19.Not making enough ice.

20.Too much water is coming out.

21.Ejector blade frozen into ice cubes.

22.Unit is hooked-up no water comes in.

23.Ice maker is running but won’t make cubes.

24.Ice maker will not make ice.

CAUSE

Operation

Arm in Up Position

AC Voltage

Water Valve

Ice Maker Cycle

Blades Frozen in Ice

AC Voltage

Water Valve

Ice Maker Cycle

Shut-off arm

Operation

Mold Thermostat

Cube Size

Ice Maker Cycle

Water Fill Adjustment

Water Valve

Water Fill Adjustment

Water Valve

Water

Water Valve

Water

Shut-Off Arm

Mold Thermostat

Hold Switch

Ice Ejector

Mold Heater

Timing Motor

AMES REFRIGERATOR OPERATION

2-WAY DISPLAY PANEL

3-WAY DISPLAY PANEL

MODELS INCLUDE: S1521, S1531, S1621, S1631, S1821, S1831, RM2607, RM2611, RM2807, RM2811

AUTO MODE

When operating in the AUTO mode, the AUTO mode indicator lamp (D) will illuminate. The control system will automatically select between AC and GAS operation with AC having priority over GAS. Either the AC indicator lamp (B) or the GAS indicator lamp (C) will illuminate depending on the energy source selected by the control system. If the control system is operating with AC energy and it then becomes unavailable, the system will automatically switch to GAS. As soon as AC becomes available again, the control will switch back to AC regardless of the status of GAS operation.

GAS MODE

When operating in the GAS mode, the AUTO mode indicator lamp (D) will not be illuminated. This mode provides LP gas operation only. The control system will activate the ignition system and will attempt to light the burner for a period of approximately 45 seconds. If unsuccessful, the CHECK indicator lamp (E) will illuminate and the GAS mode indicator lamp (C) will turn off.

To restart GAS operation, press the main power ON/OFF button (1) to the OFF and then ON position. The control system will attempt a new 45 second ignition sequence. If the refrigerator has not been used for a long time or the LP tanks have just been refilled, air may be trapped in the supply lines. To purge the air from the lines may require resetting the main power ON/OFF button (1) three or four times. If repeated attempts fail to start the LP gas operation, check to make sure that the LP gas

supply tanks are not empty and all manual shutoff valves in the lines are open.

If the control is switched to AC or DC operation while the CHECK indicator lamp is on, it will function properly, but the CHECK indicator lamp will not go off until the main power ON/OFF button is pressed to the OFF then ON position.

GAS MODE

Move the mode selector button (2) to the UP position. The GAS mode indicator lamp (C) will illuminate. After 45 seconds the burner should be ignited and operating normally.

On the initial refrigerator start-up, it may take longer than 45 seconds to allow air to be purged from the gas line. If the gas does not ignite within 45 seconds, the CHECK indicator lamp (D) will illuminate and the GAS mode indicator lamp (C) will go off.

NOTE: Do not continue to reset GAS operation if the CHECK indicator lamp continues to be illuminated after several tries.

Press the TEMPERATURE SELECTOR button (3) until the lamp at the desired position is illuminated.

TEMPERATURE SELECTOR

The temperature selector on the refrigerator controls both the gas and electric operation, thereby eliminating the necessity of resetting each time a different energy source is employed.

After the initial start-up, the temperature selector should be moved from “COLDEST” to the desired temperature setting, usually about mid-setting.

TO SHUT OFF THE REFRIGERATOR

The refrigerator may be shut off while in any mode of operation by pressing the main power ON/OFF button to the UP (OFF) position. This shuts off all DC power to the refrigerator, including the interior light.

DESCRIPTION OF OPERATING MODES

AUTO MODE

When operating in the AUTO mode, the AUTO mode indicator lamp (B) will illuminate. The control system will automatically select between AC and GAS operation with AC having priority over GAS. Either the AC indicator lamp (A) or the GAS indicator lamp (C) will illuminate depending on the energy source selected by the control system. If the control system is operating with AC energy and it then becomes unavailable, the system will automatically switch to GAS. As soon as AC becomes available again, the control will switch back to AC regardless of the status of GAS operation.

GAS MODE

When operating in the GAS mode, the AUTO mode indicator lamp (B) will be off and the GAS mode indicator lamp (C) will be illuminated. This mode provides LP gas operation only. The control system will activate the ignition system and will attempt to light the burner for a period of approximately 45 seconds. If unsuccessful, the CHECK indicator lamp (D) will illuminate and the GAS mode indicator lamp (C) will turn off.

To restart GAS operation, press the main power ON/OFF button (1) to the OFF and then ON position. The control system will attempt a new 45 second ignition sequence.

If the refrigerator has not been used for a long time or the LP tanks have just been refilled, air may be trapped in the supply lines. To purge the air from the lines may require resetting the main power ON/OFF button (1) three or four times. If repeated attempts fail to start the LP gas operation, check to make sure that the LP gas supply tanks are not empty and all manual shutoff valves in the lines are open.

SPECIAL FEATURES OF OPERATION

This control system contains a feature where it will continue to operate the cooling system in the event of a failure of a major operating component. Two different modes of operation can occur in this category.

If for some reason the display module becomes nonfunctional, the control system will revert to fully automatic operation - selecting the best energy source available with AC and GAS priority. The temperature of the refrigerator will be maintained at the MID position within normal temperature tolerances. The power module will continually attempt to reestablish operation of the display module.

The second standby mode of operation will execute when a failure of the temperature sensing device or associated electronic circuitry occurs. If this should occur, the control system will operate on the energy source selected via the control panel. The cooling unit will run continuously on the selected energy source. The refrigerator will continue to operate in this mode indefinitely or until a new sensor is installed and the system is reset.

ELITE REFRIGERATOR OPERATION (39WAY)

MODELS INCLUDE: RM4873

A 6 C

D E

3-WAY PANEL DISPLAY

AES/AUTO MODE

The AES/AUTO mode of operation takes priority over all other operating modes. If more than one mode selector button (2), (3) or (4) is in the down position, the priority is from left to right.

When operating in this mode, the AES/AUTO mode indicator lamp (A) will illuminate. In this mode the control system will automatically select the energy source with AC having top priority, DC second priority and GAS third priority. If the control system has selected a particular energy source such as AC, and then it becomes unavailable, it will automatically seek out the next available energy source.

Press the AES/AUTO mode selector button (2) to the DOWN position. Indicator lamp (A) should illuminate. Indicator lamp (D), (E) or (F) should also illuminate indicating which energy source the control has selected.

Press the TEMPERATURE SELECTOR button (5) until the lamp at the desired position is illuminated.

AC/GAS MODE

Press the AC/GAS mode selector button (3) to the DOWN (ON) position. Mode indicator lamp (B) should illuminate.

In this mode of operation the control system will automatically select between the AC and GAS energy sources with AC having first priority.

The AES/AUTO mode selector button (2) must be in the UP (OFF) position.

Indicator lamp (D) or (E) should also illuminate indicating which energy source the control has selected. If the CHECK indicator lamp (G) illuminates, see GAS MODE for further instructions.

Press the TEMPERATURE SELECTOR button (5) until the lamp at the desired position is illuminated.

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GAS MODE

When operating in the GAS mode, the AES/AUTO (2) and AC/GAS (3) mode selector buttons must be in the UP (OFF) position.

The GAS mode provides LP gas operation only.

Press the GAS mode indicator button (4) to the DOWN (ON) position.

Indicator lamps (C) and (E) should illuminate indicating GAS operation. After45 seconds the burner should be ignited and operating normally.

On the initial refrigerator start-up, it may take longer than 45 seconds to allow air to be purged from the gas line. If the gas does not ignite within 45 seconds the CHECK indicator lamp (G) will illuminate and the GAS indictor lamp (C) and (E) will go off.

To reset when the CHECK indicator lamp (G) is illuminated, press the main power ON/OFF button (1) to the OFF then ON position.

NOTE: Do not continue to reset GAS operation if the CHECK indicator lamp continues to be illuminated after several tries. If repeated attempts fail to start the LP gas operation, check to make sure that the LP gas supply tanks are not empty and all manual shutoff valves in the lines are open.

Press the TEMPERATURE SELECTOR button (5) until the lamp (H) at the desired position is illuminated.

If the control is switched to the AES/AUTO or AC/GAS mode of operation while the CHECK indicator lamp is on, AC or DC will function properly, but the CHECK indicator lamp will not go off until the main power ON/OFF button is pressed to the OFF then ON position.

TEMPERATURE SELECTOR

The temperature selector on the refrigerator controls both the gas and electric operation, thereby eliminating the necessity of resetting each time a different energy source is employed.

After the initial start-up, the temperature selector should be moved from “COLDEST” to the desired temperature setting, usually about mid-setting.

TO SHUT OFF THE REFRIGERATOR

The refrigerator may be shut off while in any mode of operation by pressing the main power ON/OFF button to the UP (OFF) position. This shuts off all DC power to the refrigerator.

DESCRIPTION OF OPERATING MODES

AES/AUTO MODE

The AES/AUTO mode of operation takes priority over all other operating modes. If more than one mode selector button (2), (3) or (4) is in the down position the priority is from left to right.

When operating in the AES/AUTO mode, the AES/AUTO mode indicator lamp (A) will illuminate. In this mode the control system will automatically select the energy source with AC having top priority, DC second priority and GAS third priority. If the control system has selected a particular energy source such as AC, and then it becomes unavailable, it will automatically seek out the next available energy source.

AC/GAS MODE

When operating in the AC/GAS mode, the AC/GAS mode indicator lamp (B) will illuminate.

In this mode of operation the control system will automatically select between the AC and GAS energy sources with AC having first priority.

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