Name: Dometic RM3804
Brand: Dometic
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DIAGNOSTIC SERVICE MANUALDIAGNOSTIC SERVICE MANUAL

DIAGNOSTIC SERVICE MANUAL

DometicDometic

Dometic

® ®

RM3604/3804 AESRM3604/3804 AES

RM3604/3804 AES

®®

RefrigeratorsRefrigerators

Refrigerators

SECTION 1SECTION 1

SECTION 1

C C

OLOL

GE REQGE REQ

GE REQ

UIREMENTSUIREMENTS

UIREMENTS

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.

SECTION 2SECTION 2

SECTION 2

C COMPONENTS —C COMPONENTS —

C COMPONENTS —

HEAHEA

HEA

TING ELEMENTTING ELEMENT

TING 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 printed

circuit board 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. The proper ohms

for RM3604 is 48 and RM3804 is 44 with a tolerance of

ten percent. If the resistance is outside the tolerance

range, replace the heating element.

SECTION 3SECTION 3

SECTION 3

DC DC

OLOL

GE REQGE REQ

GE REQ

UIREMENTSUIREMENTS

UIREMENTS

For the refrigerator to operate on any mode, DC voltage

must be supplied to the terminals at the rear of the

refrigerator and must be connected directly to the battery

of the RV. 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. Do not

use the body or chassis of the RV as a substitute for

either of the two conductors. Proper polarity is crucial for

operation of the refrigerator. Check for proper voltage at

the positive and negative terminals at the back of the

refrigerator. If power is outside the operational range,

correct the power supply problem. The power supply to

the refrigerator must be fused. Maximum fuse size: 25

amp for RM3604 and RM3804.

3-PRONG PLUG

FOR 120V AC

FUSE LINK

3AMP

MANUAL GAS

SHUTOFF VALVE

IGN.

LOCK

COVER

TERMINAL

BLOCK

With the refrigerator operating on AC or gas mode, if

voltage to the refrigerator slowly drops to or below 9.5

volts DC, the gas flame will come and will not be thermo-

stat controlled. Low DC volts (below 9.5) could cause

over-cooling.

SECTION 4SECTION 4

SECTION 4

DC COMPONENTSDC COMPONENTS

DC COMPONENTS

4.14.1

4.1

HEATING ELEMENTHEATING ELEMENT

HEATING ELEMENT

The heating element is

designed to deliver a

predetermined amount of

heat to the cooling unit.

Check the heating

element with ohms

resistance using a prop-

erly calibrated ohm meter.

This check is to be done

with the element at room

temperature. The proper ohms for RM3604 and

RM3804 DC heating element is .67 with a tolerance

range of ten percent. If the heating element is

outside this range, replace it.

NOTENOTE

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.

4.24.2

4.2

THERMOSTATTHERMOSTAT

THERMOSTAT

The thermostat operates on DC volts and regulates the

inside refrigerator temperature on all modes, by

making and breaking the circuit to the printed circuit

board. The internal mechanism breaks contact (conti-

nuity) when adequate cabinet temperature has been

reached. Check the thermostat for continuity. This

check should be made at room temperature with the

thermostat turned all the way to MAX. Another check

would be to use a jumper wire with insulated clips and

bypass the thermostat.

NOTENOTE

NOTE: Use care when doing this test. Do not short to

thermostat casing. Also remove jumper after testing is

completed.

If the above test allows the refrigerator to operate and/

or the continuity test proves the thermostat to be

defective, replace the thermostat. A defective thermo-

stat would cause insufficient cooling, no cooling and

freezing on all modes.

4.34.3

4.3

SOLENOID VALVESOLENOID VALVE

SOLENOID VALVE

The solenoid valve assembly is a

safety valvesafety valve

safety valve as well as

gas flow valvegas flow valve

gas flow valve. When the AES selects LP gas opera-

tion, DC volts are sent to the solenoid coil which opens

the internal valve.

Dometic RM3804 User Manual

Table of Contents

Questions and Answers:

Dometic RM3804 Specifications

Related product manuals

Brand	Dometic
Model	RM3804
Category	Refrigerator
Language	English