Dometic® MANUAL This section addresses the most common system problems associated with Refrigerators supplied by The Dometic Refrigerators Corporation. Our intent is to provide you with a guideline of checks to make, should you encounter one of the following symptoms. Dometic Manual Refrigerators CAUSE REFER TO SECTION Operation Wiring Switch 18C B 13C,14C 37,38 25-30 35 2. No electric operation.
Dometic® MANUAL Refrigerators SYMPTOM CAUSE REFER TO SECTION PAGE 8. Insufficient cooling on all modes. Operation Level Ventilation Ambient Temperature Air Leaks Thermostat Cooling Unit 18C 1J 2J 5J 3J 6C 6J 37,38 89 89 90 89 33 90 9. Insufficient cooling on electric — cools properly on other mode(s). AC Volts Heating Elements Thermostat 17C 17C 6C 36 37 33 10. Insufficient cooling on gas. Cools properly on other mode(s).
Dometic® MANUAL Refrigerators AES MODELS: RM3604, RM3804, RM4804 and RM7030 with Product No. 921890201, 921890301 SYMPTOM CAUSE REFER TO SECTION PAGE DC Volts Fuse Wiring Upper PC Board Circuit Board 4F 5F B 5F 5F 65 71 18,19,21 67-70 70,71 2. No operation – has panel lights. Thermostat Upper Circuit Board Solenoid Wiring Circuit Board 5F 5F 5F B 5F 65 67-70 65,66 18,19,21 70,71 3. Operating OK – no panel lights.
Dometic® MANUAL Refrigerators SYMPTOM CAUSE REFER TO SECTION PAGE 8. Insufficient cooling on AC. Cools properly on DC and gas. AC Volts Heating Element 2F 3F 65 65 9. Insufficient cooling on DC. Cools properly on AC and gas. DC Volts Heating Element Wiring 4F 3F B 65 65 18,19,21 10. Insufficient cooling on gas. Cools properly on AC and DC. LP gas Orifice Flue Baffle Flue Tube Flue Cap Burner 1A 3A 2A,3A 3A 3A 2A 12 14 12,13 14 14 12 11. Freezes on all modes.
Dometic® MANUAL Refrigerators AMES/AES Refrigerator Models including: S1521, S1531, S1621, S1631, S1821, S1831, RM2607, RM2611, RM2807, RM2811, RM3607 and RM3807, the ROYALE/ELITE Refrigerator Models including RM3662, RM3663, RM3862, RM3863, RM4872, RM4873, RM7732, RM7832, RM7130, and RM7030 with Product No. 921890401. SYMPTOM CAUSE REFER TO SEC. PAGE REFRIGERATOR SECTION 1.
Dometic® MANUAL Refrigerators SYMPTOM CAUSE REFER TO PAGE 7. Insufficient cooling on AC - cools properly on other mode(s). AC Volts Heating Element Lower Circuit Board 6D 7D 13D 47 47 52,53 8. Insufficient cooling on DC - cools properly on other mode(s). DC Volts Heating Element Wiring Lower Circuit Board 11D 8D B 13D 48,49 47 15,16,17,22,23,24 52,53 9. Insufficient cooling on Gas - cools properly on other mode(s).
Dometic® MANUAL Refrigerators RM2652, RM2852, RM2612 & RM2812 DOMETIC REFRIGERATORS SYMPTOM CAUSE REFER TO PAGE REFRIGERATOR SECTION 1. No operation - no panel lights Operation DC Volts Fuse Wiring Upper Circuit Board Lower Circuit Board 1E 7E 8E B 8E 8E 55,56 57,58 62 20 60 60,61,62 2. No operation - has panel lights Operation DC Volts Thermistor Fuses Wiring Lower Circuit Board 1E 7E 8E 8E B 8E 55,56 57,58 58 62 20 60,61,62 3.
Dometic® MANUAL Refrigerators SYMPTOM 7. 8. 9. Insufficient cooling on Gas - cools properly on AC mode. Freezes. Check light on. CAUSE REFER TO PAGE LP Gas Orifice Flue Baffle Flue Tube Burner Lower Circuit Board 1A 3A 2A,3A 3A 2A 8E 12 14 12,13 14 12 60,61,62 Operation Thermistor Lower Circuit Board 1E 8E 8E 55,56 58 60,61,62 DC Volts Wiring LP Gas Manual Gas Valve Solenoid Orifice Burner Thermocouple Lower Circuit Board 7E B 1A 2A 8E 3A 2A 8E 8E 57,58 20 12 12 59 14 12 60 60,61,62 10.
Dometic® MANUAL Refrigerators SYMPTOM CAUSE REFER TO SEC. PAGE 14. Ice Maker won’t make ice. Blades Frozen in Ice AC Voltage Water Valve Ice Maker Cycle 1G 4G 1G 1G 72 77 73 73 15. Keeps making ice and won’t shut off. Shut-off arm 1G 72 16. Not making enough ice. Operation Mold Thermostat Cube Size Ice Maker Cycle 2G 1G 3G 1G 73 72 76 73 17. Too much water is coming out. Water Fill Adjustment Water Valve 3G 1G 76 73 18. Ejector blade frozen into ice cubes.
Dometic® MANUAL Refrigerators SYMPTOM CAUSE REFER TO SEC. PAGE 24. Compressor runs but kicks ON and OFF. Starting Device Refrigerant System 2H 7H 78 85 25. Compressor runs – no fan. Fan Motor 2H 79 26. Ice maker trips breaker. Low Voltage High Amperage Compressor Breaker 6H 6H 2H 6H 84 84 78,79 84 27. Ice maker won't make ice. Ice Maker Assembly Blade Frozen in Ice Switch AC Voltage Water Valve 2H 2H 2H 6H 2H 80 79 78 84 80 28. Water in bucket.
Dometic® MANUAL Refrigerators SYMPTOM CAUSE REFER TO SEC. PAGE 36. Will not eject ice. Ice Ejector Mold Heater Timing Motor 2H 2H 2H 79 79 80 37. Unit leaks water.
SECTION ® DometicA. MANUAL Refrigerators LP GAS REQUIREMENTS 1A. LP GAS REQUIREMENTS The LP gas pressure to the refrigerator should be 11 inches water column with half of all BTU’s of the RV turned on. With all other appliances turned off, the pressure to the refrigerator should not exceed 12 inches water column. To check the gas pressure when the refrigerator is operating, there is a pressure test housing located just prior to the orifice.
Dometic® MANUAL Refrigerators 3A.
Dometic® MANUAL Refrigerators FLUE CAP (Only on applicable models) The flue cap is located at the top of the flue tube and is attached with a screw. It must be properly attached or flame outage could occur. FLUE TUBE ORIFICE The orifice is a small brass fitting that has a ruby membrane that is laser beam drilled and is mounted on the gas line just prior to the burner. The orifice should be cleaned periodically, at least once a year, by using an alcohol based solvent and allowing to air dry.
SECTION B.
Dometic® MANUAL Refrigerators RM7732 TYPICAL WIRING DIAGRAM 16
Dometic® MANUAL Refrigerators TYPICAL WIRING DIAGRAM FOR RM7030 (PRODUCT NO.
Dometic® MANUAL Refrigerators TYPICAL WIRING DIAGRAM FOR RM7030 (PRODUCT NO.
Dometic® MANUAL Refrigerators TYPICAL RM4804 3-WAY 12/120 VOLTS WIRING DIAGRAM TYPICAL RM4804 2-WAY 120 VOLTS WIRING DIAGRAM 19
Dometic® MANUAL Refrigerators TYPICAL WIRING DIAGRAM - RM2652, RM2852, RM2612, RM2812 20
Dometic® MANUAL Refrigerators RM3604 & RM3804 3-WAY 12/120 VOLTS D BLACK BROWN RED ORANGE YELLOW GREEN BLUE A B C D E F G 7 7 7 7 7 7 7 A B C D E F 6 6 6 6 6 6 BLACK BROWN RED ORANGE GREEN YELLOW A B C D E F G H I K 10 10 10 10 10 10 10 10 10 10 BLACK BROWN RED ORANGE YELLOW GREEN BLUE VIOLET GRAY WHITE D D 12V+ 12V+ 12V+ 12V+ BLACK 4 4 4 4 A B 85 Z 86 + — 87 12 VOLT DC A IGN.
Dometic® MANUAL Refrigerators ROYALE & ELITE TYPICAL 3-WAY WIRING DIAGRAM 293267600 4 22
Dometic® MANUAL Refrigerators ROYALE & ELITE TYPICAL 2-WAY WIRING DIAGRAM 293267500 23
Dometic® MANUAL Refrigerators AMES & AES TYPICAL 3-WAY WIRING DIAGRAM Circuit Board Power Circuit Board Display Thermistor Gas Valve Reigniter Thermocouple Electrode Retainer for Burner Terminal Block Terminal Strip Absorption Unit Fuse 3A Fuse 5A Heater 120V AC Fuse 35A Heater 12V DC Switch Light Heating Cable Switch Terminal Block Terminal Block White Black Green Green/Yellow Gray Brown AMES & AES TYPICAL 2-WAY WIRING DIAGRAM Circuit Board Power Circuit Board Display Thermistor Gas Valve Reigniter Thermo
Dometic® MANUAL Refrigerators RM2604 & RM2804 2-WAY 120 VOLTS G H 12 V OLTS DC 120 V OLTS A C 1 G 2 4 7 7 2 1 A 4 7a 4a 2 C 1a 7a K 2a 4 4 B A L H E F 4a I 4 1 2 1 2 2 1 D 1 120 V OLTS A C 4 3 1 N L A SWITCH B THERMOSTAT 120 V OLTS A C F 1 C 12 V OLTS DC REIGNITER LAMP 1 C TERMINAL BL OCK D TERMINAL BL OCK E 1 2 A F REIGNITER C 1 WHITE 2 BLACK 2a I 3 GREEN 4 GREEN/YELLOW HEATER E 2 2 1a G LAMP H DOOR SW ITCH B D J INDICATION L AMP I J TERMINA
Dometic® MANUAL Refrigerators TYPICAL MANUAL 2-WAY WITH REIGNITOR FOR REFRIGERATORS WITH TOP MOUNT CONTROLS TYPICAL MANUAL 3-WAY WITH PIEZO IGNITOR FOR REFRIGERATORS WITH TOP MOUNT CONTROLS 26
Dometic® MANUAL Refrigerators TYPICAL MANUAL 3-WAY WITH REIGNITOR FOR REFRIGERATORS WITH TOP MOUNT CONTROLS TYPICAL MANUAL 3-WAY WITH REIGNITER AND RELAY FOR REFRIGERATORS WITH BOTTOM MOUNT CONTROLS 27
Dometic® MANUAL Refrigerators TYPICAL MANUAL 3-WAY WITH REIGNITER FOR REFRIGERATORS WITH BOTTOM MOUNT CONTROLS TYPICAL MANUAL 2-WAY WITH PIEZO IGNITOR FOR REFRIGERATORS WITH TOP MOUNT CONTROLS 28
Dometic® MANUAL Refrigerators TYPICAL MANUAL 2-WAY WITH PIEZO IGNITER FOR REFRIGERATORS WITH BOTTOM MOUNT CONTROLS D B TYPICAL MANUAL 3-WAY WITH PIEZO IGNITER FOR REFRIGERATORS WITH BOTTOM MOUNT CONTROLS 29
Dometic® MANUAL Refrigerators TYPICAL MANUAL 2-WAY WITH REIGNITER FOR REFRIGERATORS WITH BOTTOM MOUNT CONTROLS 30
Dometic® MANUAL Refrigerators EXTERNAL WIRING A. 120 Volts AC Connection: The refrigerator is equipped with a three prong (grounded) plug for protection against shock hazards and should be plugged directly into a properly grounded three prong receptacle. DO NOT cut or remove the grounding prong from this plug. B. 12 Volt Connection for Igniter (On Manual Models only): The connection is made to the terminal block marked 12 volts DC REIGNITER.
SECTION ® DometicC. MANUAL Refrigerators THIS SECTION APPLIES TO THE DOMETIC MANUAL REFRIGERATOR 1C. BYPASS SCREW The bypass screw is a small brass screw located on any Dometic gas thermostat that regulates gas flow in the low flame mode. There are three common sizes of this screw: S-17 (350 BTU), S-14 (325 BTU) and S-11 (300 BTU). To check the bypass screw, connect a manometer at the pressure test housing. The pressure on low flame mode should be 2 to 4 inches water column.
Dometic® MANUAL Refrigerators 5C. GAS THERMOSTAT (RM2804 & RM2604 ONLY) 7C. FLAME INDICATOR METER (On Top Mounted Controls Only) On the LP gas mode, full line pressure is directed through the thermostat to the burner until the thermostat senses that the refrigerator cabinet has reached proper cooling temperature. At that time an internal valve closes and redirects the gas flow through the by-pass screw. This reduces the amount of LP gas going to the burner assembly.
Dometic® MANUAL Refrigerators 10C. RELAY (RM2604/RM2610/RM2804RM2810 3-WAY MODELS ONLY) The relay controls the circuit to the DC heating element. The load (amps) of the DC heating element goes through the relay. To check the relay, first verify the selector switch is on DC mode and the thermostat) is NOT completing the circuit. Next, verify voltage is present between terminals 85 and 30. If voltage is not present, check wiring to both terminals. 85 30 For values, refer to Technical Data Section, Pg. 86.
Dometic® MANUAL Refrigerators RM2452/RM2453/RM2552/RM2553 SWITCH HIGH VOLTAGE CABLE NOTE: Be sure switch and igniter are good before checking the high voltage cable and the switch is in the gas mode. To check the high voltage cable, first disconnect DC power at the terminal block. Next, disconnect high voltage cable from electrode. Then reconnect DC power to the terminal block. If sparking starts, cable is good, DO NOT REPLACE, check the electrode.
Dometic® MANUAL Refrigerators 15C. DC VOLTAGE REQUIREMENTS For the refrigerator to operate, igniter (gas mode) and DC volt operation (3-way models only), DC voltage must be supplied to the terminal block or blocks (2 terminal blocks on 3-way models) at the rear of the refrigerator. The operational range is 10.5 to 15 volts DC. Connecting the refrigerator to an unregulated converter can result in improper operation of the refrigerator.
Dometic® MANUAL Refrigerators 2) HEATING ELEMENT The heating element is designed to deliver a predetermined amount of heat to the cooling unit. To check a heating element, remove the heater leads from the terminal block and measure for proper resistance across the two leads with a properly calibrated ohm meter. This check is to be done with the heating element at room temperature. Refer to the Technical Data Section for the correct values.
Dometic® MANUAL Refrigerators 19C. OPERATION FOR REFRIGERATORS WITH BOTTOM MOUNT CONTROLS CONTROLS Refrigerators with Piezo Ignitors (RM2310 & RM2410) A B C D E - ON/OFF Switch Thermostat Gas/Electric Safety Push-button Piezo Ignitor Flame View Port Refrigerators with Automatic Reigniters (RM2510/RM2610/RM2810) A B C E - ON/OFF Switch Thermostat, Gas/Electric Safety Push-button Light A A D C B C B E E A.
Dometic® MANUAL Refrigerators B. ELECTRIC OPERATION Check to be sure the power cord is properly connected to the power supply. If the refrigerator is equipped for 12 volt DC operation, the tow vehicle engine should be running to prevent discharging the battery. Turn knob "A" to the position marked "ELEC" for 120 volt AC operation or "12V" for 12 volt DC operation. Turn the thermostat knob "B" one-quarter (1/4) of a turn from the "OFF" position.
SECTION ® DometicD. MANUAL Refrigerators THIS SECTION APPLIES TO MODELS: AMES/AES/ROYALE/ELITE, RM7130, RM7732, RM7832 AND RM7030 WITH PRODUCT NO. 921890401 1D.
Dometic® MANUAL Refrigerators If the display module becomes nonfunctional, the control system will revert to full automatic operation selecting the best energy source available with AC, DC (3-way only) 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.
Dometic® MANUAL Refrigerators As soon as the input voltage rises above the required 12.8 volts, the DC mode lamp (F) will illuminate; however, the control system will remain in the 25 minute delay mode and operate on gas. This delay is to allow sufficient time for the vehicle charging system to recharge the battery. If 120 volt AC becomes available during the 25 minute delay, the control will automatically switch energy source.
Dometic® MANUAL Refrigerators Press the TEMPERATURE SELECTOR button (4) until the lamp (F) at the desired position is illuminated. GAS MODE (3-WAY MODEL) Press the DC mode button (2) to the UP (OFF) position. Move the AUTO mode selector button (3) 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.
Dometic® MANUAL Refrigerators 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 illiminate and the GAS mode indicator lamp (C) will go off.
Dometic® MANUAL Refrigerators 5D. ELITE REFRIGERATOR OPERATION (3-WAY) MODELS INCLUDE: RM4873 A 3-WAY PANEL DISPLAY B C D E 1 1 2 3 2 3 4 5 5 4 F G H 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. Press the TEMPERATURE SELECTOR button (5) until the lamp at the desired position is illuminated.
Dometic® MANUAL Refrigerators 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.
Dometic® MANUAL Refrigerators The input battery voltage must rise above 12.8 volts for 25 minutes before DC operation can resume. As soon as the input voltage rises above the required 12.8 volts, the DC mode lamp (F) will illuminate. However the control system will remain in the 25 minute DC delay mode and operate on gas. This delay is to allow sufficient time for the vehicle charging system to recharge the battery.
Dometic® MANUAL Refrigerators NOTE: It will take a very precise ohm meter to accurately read this measurement. If a precise ohm meter is not available, a continuity reading will indicate an open or complete circuit. If an open circuit is the test result, replace the element. THERMISTOR ADJUSTER P2 THERMISTOR ADJUSTER 9D. THERMISTOR To determine if the temperature sensor is functioning properly, perform the following test. Remove the cover from lower circuit board.
Dometic® MANUAL Refrigerators A battery will provide straight line DC power, but extended operation will require recharging of the battery by the converter or the alternator. The converter and alternator produce DC power by a series of diodes that rectify alternating current to DC. A battery or capacitors can be used to clean up the AC ripple that is present after AC voltage has been rectified. AC ripple can be measured by a digital voltmeter set on the AC scale at the main terminal block connections.
Dometic® MANUAL Refrigerators IGNITER The igniter is an electronic device that produces high voltage to create a spark at the burner, only on gas mode. First verify proper voltage at the positive (+) and ground (–) terminals of the ignitor. The reading should be within one volt of incoming voltage at the main terminal block during trial-for-ignition (approximately 45 seconds). A voltage drop of more than one volt would indicate a loose connection or a circuit board problem.
Dometic® MANUAL Refrigerators THERMOCOUPLE The thermocouple is a component extending above the burner assembly so the tip is in the path of the flame. During normal gas operation, the thermocouple should produce 25 to 35 millivolts when connected to the lower circuit board. Any reading below 18 millivolts could cause erratic gas operation. NOTE: A reading of 18 or less could be caused by low gas pressure or improper thermocouple location.
Dometic® MANUAL Refrigerators manually. For AUTO step sequence, press the AUTO/GAS Mode Selector Switch to the DOWN position. The AUTO Mode Indicator will illuminate. If each lamp illuminates during the check, the display circuit board is good. 3 2 5 1 4 All of the checks listed below are done on the lower circuit board. The manual test sequence is as follows: Position #1: Idle Position, all loads off. Position #2: Activate AC Heater. Check for AC volts at terminals J7 and J8.
Dometic® MANUAL Refrigerators D. GAS 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 REFRIGERATOR IN THE COOLING MODE. Before checking the circuit board for gas operation, verify that the following components are good: Upper Circuit Board, Thermistor and 3 Amp Fuse. NOTE: Each of the following tests should be done according to pin locations.
Dometic® MANUAL Refrigerators When the storage container is full of ice, the ice level bail arm can not return to the DOWN position. This will stop further production of ice until the container is emptied and the bail arm is returned to the down position. The absorption system will keep the compartment at the proper temperature for storage of ice. Ice making is accelerated if the thermostat is set to the coldest position. It is a good idea to do this a few hours before you anticipate a need for ice.
SECTION E. Dometic® MANUAL Refrigerators 1E. THIS SECTION APPLIES TO MODELS: RM2652, RM2852, RM2612 AND RM2812 REFRIGERATOR OPERATION DISPLAY PANEL (RM2652, RM2852) C LEGEND 2-WAY MODEL 1. Main Power Button ON/OFF 2. AUTO/MANUAL Mode Selector Button A. AUTO Mode indicator lamp B. CHECK indicator lamp (Gas Mode Only) C. Climate control switch A ON 1 OFF B CHECK AUTO 2 MANUAL C DISPLAY PANEL (RM2612, RM2812) LEGEND 1. Main Power Button ON/OFF 2. AUTO/MANUAL Mode Selector Button A.
Dometic® MANUAL Refrigerators 2E. START-UP INSTRUCTIONS unsuccessful, the CHECK indicator lamp (B) will illuminate. Before starting the refrigerator, check that all the manual gas valves are in the ON position. DO NOT forget the manual shutoff valve on the rear of the refrigerator. To restart an ignition attempt with the CHECK lamp illuminated or to clear (turn off) the CHECK lamp, press the main power ON/OFF button to the OFF and then to the ON position.
Dometic® MANUAL Refrigerators 5E. AC VOLTAGE REQUIREMENTS 6E. AC COMPONENTS The refrigerator is a 120 volt AC, 60 Hz appliance. The proper operating range is 100 to 132 volts. Check the AC volts at the receptacle where the refrigerator is attached. If voltage is outside of the proper operating range, correct the power source problem. If voltage drops below 100 volts, cooling efficiency will decrease with voltage decrease.
Dometic® MANUAL Refrigerators The switching of relays from converter power to battery power when unplugging from shore power or shutting down of the generator could interrupt DC power long enough to cause a check light. The thermocouple produces 25–35 MVDC when operating. When DC power is interrupted and restored, the thermocouple may not have sufficient time to cool.
Dometic® MANUAL Refrigerators SOLENOID VALVE When the refrigerator selects LP gas operation, DC volts are sent to the solenoid coil which opens the internal valve. Check the solenoid coil with a properly calibrated ohm meter. Remove the connector from the solenoid and measure the resistance across the terminals. The proper reading would be 49 ohms with tolerance range of ten percent. Next, hook up a manometer at the test port.
Dometic® MANUAL Refrigerators HIGH VOLTAGE CABLE Disconnect DC power at the refrigerator terminal block. Disconnect high voltage cable from electrode. Reconnect DC power. If sparking starts during trial-for-ignition (approximately 45 seconds), the cable is good. If there is no sparking during trial-for-ignition (approximately 45 seconds), disconnect DC power and disconnect high voltage cable at the igniter. Reconnect DC power.
Dometic® MANUAL Refrigerators MIXING OF ELECTRICAL COMPONENTS FROM OTHER MODEL REFRIGERATORS AND WITHIN THE “12 SERIES” MODEL REFRIGERATORS MAY CAUSE IMPROPER OPERATION (i.e. NO COOLING, OVER-COOLING) AND DAMAGE TO POWER MODULE, DISPLAY PANEL OR BOTH. When Replacement Electronic Controls on Model RM2612, with Serial Numbers below 41900000 are required, use 3108701.601 Electronic Control Kit. It contains a matching set of controls as in Version III.
Dometic® MANUAL Refrigerators NOTE: Before installing a new circuit board, determine and correct the cause of the failure. If voltage is present, do not change the circuit board. Check the AC heating elements. C. GAS 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 REFRIGERATOR IN THE COOLING MODE.
SECTION F. Dometic® MANUAL Refrigerators THIS SECTION APPLIES TO MODELS: RM3804, RM3604, RM4804 with Ice Maker, & RM7030 with Product No. 921890201, 921890301 LP GAS DELAY MODE 1F. OPERATION RM7030 (Product No. 921890201 & 921890301) When the vehicle engine is turned off, the AES system A B C OFF D ON E F G H AC AES FULLY AUTOMATIC MODE Turn switch "C" to the "ON" position. The bulb above push-button "A" will light up green, indicating that the control system is in the fully automatic mode.
Dometic® MANUAL Refrigerators FLAME FAILURE DURING LP GAS OPERATION If the LP gas flame fails during the burner cycle, the high voltage spark will continue arcing for up to three minutes. At the end of three minutes the gas control will stop the flow of LP gas to the burner, the sparking will stop and the red indicator lamp "H" will light up. LP gas operation will not be possible as long as this indicator is ON.
Dometic® MANUAL Refrigerators 2F. AC VOLTAGE REQUIREMENTS The refrigerator is a 120 volt AC, 60 Hz appliance. The proper operating range is 100 to 132 volts. Check the AC volts at the receptacle where the refrigerator is attached. If voltage is outside of the proper operating range, correct the power source problem. 3F. AC COMPONENTS HEATING ELEMENT The heating element is designed to deliver a predetermined amount of heat to the cooling unit.
Dometic® MANUAL Refrigerators Check the solenoid coil with a properly calibrated ohm meter. Remove the connector from the solenoid and measure the resistance across the upper and lower terminals. The proper reading would be 20 ohms with tolerance range of ten percent. Once flame is lit, the thermocouple produces the voltage to keep the valve open. If for any reason the thermocouple does not provide enough current to the valve, it will close, stopping the flow of gas.
Dometic® MANUAL Refrigerators With vehicle ignition switch off and no voltage to IGN lock terminal: Check: Voltage should be present between terminals 85 and 30. If voltage is not present, check wiring to both terminals. Voltage should NOT be present between terminals 85 and 87. If voltage is present, the relay is defective and needs to be replaced. With vehicle ignition switch on and voltage to IGN lock terminal: Check: Voltage should be present between terminals 85 and 86.
Dometic® MANUAL Refrigerators CONTINUITY should be indicated between the brown terminal to the red terminal on the 10-pin connector. BROWN RED 10 PIN NO continuity should be indicated between the yellow terminal to the green terminal on the 10-pin connector. YELLOW GREEN 10 PIN NO continuity should be indicated between the red terminal on the 10pin connector to the blue terminal on the 7-pin connector.
Dometic® MANUAL Refrigerators With the AC/gas function switch manually depressed: Continuity should be indicated between the blue terminal on the 7-pin connector to the blue terminal on the 10-pin connector. With the AC/gas function switch NOT depressed: A reading would NOT be indicated. BLUE 7 PIN BLUE 10 PIN NOTE: If the check on the AC/gas function switch is not correct, verify the wire harness has continuity. If the wire harness is good, replace the upper circuit board. 5.
Dometic® MANUAL Refrigerators With the mode switch (?) manually depressed: An ohms reading should be ORANGE BROWN 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 7 Pin 10 Pin be approximately 26,000. You should NOT have a reading unless the mode switch (?) is depressed.
Dometic® MANUAL Refrigerators 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. 4. THESE PROCEDURES MUST BE FOLLOWED IN SEQUENCE AND AT THE PROPER TERMINALS OR DAMAGE TO THE BOARD WILL RESULT.
SECTION G. Dometic® MANUAL Refrigerators THIS SECTION REFERS TO THE ICE MAKER CYCLE WITHOUT A COMPRESSOR 1G. ICE MAKER COMPONENTS MOLD HEATER The mold heater uses 165 watts to thaw the ice free from the mold. It is wired in series with the thermostat which also acts as a safety device. With power to the appliance off, check for resistance between the two leads to the heater element. You should obtain a MOLD HEATER reading of approxi(Staked in Place) mately 80 ohms.
Dometic® MANUAL Refrigerators MOLD SWITCHES These three switches are single-pole, double-throw style. They are identical and interchangeable. The holding switch assures completion of a revolution once a cycle has started. The water valve switch opens the water valve during the fill stage of the cycle. NOTE: This is the only adjustable component of the ice maker. If you use a doublethrow switch, DO NOT use the N.O. terminal. The shutoff switch stops the ice maker’s operation when the storage bin is full.
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Dometic® MANUAL Refrigerators 3G. ICE MAKER – OTHER WATER FILL ADJUSTMENT The correct water level in the mold is important for the proper production of ice. The size of the ice cubes depends on the amount of water which enters the mold. The cubes should be approximately 1/2" wide, 3/4" high and 2-1/2" long. If the water overflows in the mold, first check to see if the ice maker unit is level in the appliance. Next ensure that the appliance is installed level in the RV.
Dometic® MANUAL Refrigerators 4G. WIRING Refer to the wiring diagram supplied with the unit you are working on, and make sure all wiring connections are correct and tight. THIS IS AN ENERGIZED CIRCUIT. ELECTRICAL SHOCK CAN OCCUR. BEFORE CHECKING THESE COMPONENTS BE SURE THERE IS NO POWER TO THE APPLIANCE. AMES & AES ICE MAKER TYPICAL WIRING DIAGRAM ROYALE/ELITE ICE MAKER TYPICAL WIRING DIAGRAM WATER SUPPLY To operate properly, the water pressure in the water supply line must be between 15 Ibs.
SECTION H. Dometic® MANUAL Refrigerators THIS SECTION APPLIES TO ICE MAKERS WITH A COMPRESSOR 1H. ICE MAKER OPERATION 2H. ICE MAKER COMPONENTS The refrigerator has to be connected to 120 volts AC before the ice maker can operate. The water valve supplying the refrigerator must be turned on and the shutoff ice level bail arm in fully down position. Turn on the ice maker switch, starting the compressor. The compressor operation lowers the temperature in the ice maker compartment.
Dometic® MANUAL Refrigerators To check the compressor, unplug the appliance or otherwise be sure all power is off to the appliance. Remove the wires on the start device and overload. Check for continuity on terminal 14 to 12 and terminal 14 to 13 and terminal 12 to 13. Continuity should be present. ICE EJECTOR The ice ejector blades sweep the ice from the mold cavities during the ejection cycle. Next, check each terminal (12, 13 and 14) for continuity to the compressor casing ground terminal.
Dometic® MANUAL Refrigerators MOLD SWITCHES These three switches are single-pole, double-throw style. They are identical and interchangeable. The holding switch assures completion of a revolution once a cycle has started. The water valve switch opens the water valve during the fill stage of the cycle. NOTE: This is the only adjustable component of the ice maker. If you use a doublethrow switch, DO NOT use the N.O. terminal. The shut-off switch stops the ice maker's operation when the storage bin is full.
Dometic® MANUAL Refrigerators 81
Dometic® MANUAL Refrigerators 82
Dometic® MANUAL Refrigerators 4H. ICE MAKER – OTHER AIR FLOW The path of air through the base of the refrigerator must be kept intact and free of obstructions. Make sure there are no obstructions such as dirt, lint, etc. which might affect the proper production of ice. WATER FILL ADJUSTMENT The correct water level in the mold is important for the proper production of ice. The size of the ice cubes depends on the amount of water which enters the mold.
Dometic® MANUAL Refrigerators 6H. WIRING Refer to the wiring diagram supplied with the unit you are working on, and make sure all wiring connections are correct and tight. THIS IS AN ENERGIZED CIRCUIT. ELECTRICAL SHOCK CAN OCCUR. BEFORE CHECKING THESE COMPONENTS BE SURE THERE IS NO POWER TO THE APPLIANCE.
Dometic® MANUAL Refrigerators 7H. REFRIGERANT SYSTEM 8H. WATER SUPPLY The ice maker uses 134A refrigerant in its sealed system. Frequent starting and stopping of the compressor can be a symptom of low refrigerant level in the system. To operate properly, the water pressure in the water supply line must be between 15 lbs. PSI and 100 lbs. PSI. NOTE: The Clean Air Act of 1990 set guidelines in regard to recapturing or disposition of refrigerants.
REFRIGERATOR TECHNICAL DATA PAGE 1 NOTE 1: More than one part number for model listed. Refer to parts manual that covers the same product number for correct parts information. * Requires (2) ea. heating elements. REFRIGERATOR BULLETIN R28/G7 FEBRUARY 1997 The formulas for calculating Amps and Ohms: Watts divided by Volts = Amps Volts divided by Amps = Ohms Model No. Cooling Unit Part No. Burner Jet Size & Part No.
PAGE 2 Model No. REFRIGERATOR TECHNICAL DATA Cooling Unit Part No. Burner Jet Size & Part No. BTU's per Hour (Input) Watts AC Heating Element Amps Ohms Part No. ±10% DC Heating Element Watts Amps Part No. RM2810 2934901097 (58) 2007419217 1500 325 2.7 44 0173742016 215 17.9 0173757014 RM2811 2934903093 (58) 2007419217 1500 325 2.7 44 0173742164 215 17.9 0173757063 RM2812 2934903093 (58) 2007419217 1500 325 2.
PAGE 3 Model No. REFRIGERATOR TECHNICAL DATA Cooling Unit Part No. Burner Jet Size & Part No. BTU's per Hour (Input) Watts AC Heating Element Amps Ohms Part No. ±10% DC Heating Element Watts Amps Part No. S530.013 2943700.092 (--) -- -- -- -- -- 1200 170 1.5 72 2943466.009 150 12.5 2943468.005 S619.006 2943700.100 (--) 0958160004 1500 300 2.73 40 2943469.003 -- -- -- -- -- -- -- S619.007 2943700.100 (--) 0958160004 1500 300 2.73 40 2943469.
SECTION J. Dometic® MANUAL Refrigerators THIS SECTION APPLIES TO ALL REFRIGERATOR MODELS OTHER 1J. SINGLE-DOOR REFRIGERATORS LEVELING Leveling is one of the requirements for proper operation with absorption refrigerators. The absorption design utilizes no mechanical pumps or compressors to circulate the refrigerant within the system, so proper leveling must be maintained to provide the correct refrigerant flow.
Dometic® MANUAL Refrigerators Then close the door and the magnetic strip should pull the gasket to the metal frame. Leave door closed until the material has cooled. Then recheck for a positive seal. If a positive seal cannot be achieved, replace the door gasket. Also check that the cooling unit is installed properly. The cooling unit’s foam block, the portion that surrounds the evaporator coils, must be flush to the cabinet at the back of the refrigerator and have a positive seal.
Dometic® MANUAL Refrigerators Remove all screws securing the refrigerator into the cabinet and slide the refrigerator out approximately 2–4 inches. Clean the metal frame and foil-backed insulation around the refrigerator. Apply a foil-backed adhesive tape to the joint between outer frame and foil-backed refrigerator insulation. Refer to illustration top of page 22. Make sure the refrigerator is dry and that the surface temperatures are above 50°F.