Dometic RM2804, RM2604 Service Manual
Foreword
This service manual is the result of the
dedication of The
Dometic
its engineers in giving service people the
necessary instruction for making accurate
analyses of certain conditions. Provided is
a diagnostic chart leading a qualified
mechanic into the service manual pages to
locate and solve symptoms which may
Corporation and
occur.
Dometic
has continued its
commitment in providing service people
with this, the most up-to-date information
about servicing
Dometic
RV accessories.
Form No. 3 106930.005
2/96
(Replaces 05
1409 1/93)
CONTENTS
PAGE NO.
RM2604 & 2804
STD DIAGNOSTIC FLOW CHART . . . . . . 1
SECTION 1
ACVOLTAGE
REQUIREMENTS
SECTION 2
AC COMPONENTS
2.1 Heating Element . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2
Thermostat
SECTION 3
DC
VOLTAGE
REQUIREMENTS
SECTION 4
DC COMPONENTS
4.1
Switch . .
4.2
I
4.3
4.4
4.5
4.6
4.7
niter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I!
lectrodee
HighVolta
Door
Relay
Heating Element . . . . . . . . . .
SECTION 5
LP
REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
GAS
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.._.............._........................_......................_......_..............
. ... . . . . . . . . . . . . .. . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . .
e Cable . . . . .
. . . . . . . . . . . . . . . . . . . . . . . .
\
Switcc
.._...................._.._._....................._._.........._................._.........
.._..................._..........................................
..__._._...........
.._......_.........._....._.......___...........................
. . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . .
.._.............................................
.._...._.._..........................................
..__......._._.........__..._...___...........___........
3
.
3
3
3
4
:
5
5
5
SECTION 6
LP GAS COMPONENTS
Shut-Off Valve..
:::
Filter..
Thermostat..
iii::
By-pass
SafetyValve...............................................................................
i::
Thermocouple
Burner.........................................................................................
:.z
6:9
6.10
6.11
Orifice.........................................................................................
..........................................................................................
Screw
FlueBaffle
Flue
Cap.....................................................................................
Flue Tube....................................................................................
SECTION 7
WIRING
7.1 External Wiring . . . . . . . . . . . . . . . . . .
7.2
Internal
Wiring
SECTION 8
OTHER
Leveling.......................................................................................
Ventilation
AirLeaks...................................................................................
DoorPosition..
Ambient Temperature..
Coolin
Food
High Humi
Interior Liner Seal to Frame
2
Unit..
tora
d
...........................................................................
................................................................................
............................................................................
.............................................................................
...................................................................................
.._....___..._............._..._._._.._._._......_........
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
...................................................................................
...........................................................................
.............................................................................
e
............................................................................
ityy
............................................................................
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6
6
6
6
7
7
7
7
7
7
7
7
9
9
10
10
10
11
11
11
11
DIAGNOSTIC SERVICE MANUAL
Diagnostic Service Manuals
Dometic
®
RM2604/2804
Refrigerators
This program will address the most common system problems associated with the RM2604/2804 Manual Refrigerators supplied by The Dometic Corporation. Our intent is to provide you with a guideline of checks to make, should
you encounter one of the following symptoms.
REFERREFER
REFER
REFERREFER
TOTO
TO
SYMPTOMSYMPTOM
SYMPTOM
SYMPTOMSYMPTOM
CAUSECAUSE
CAUSE
CAUSECAUSE
TOTO
SECTIONSECTION
SECTION
SECTIONSECTION
STEPSTEP
STEP
STEPSTEP
1. No operation.
2. No electric operation.
3. No gas operation — no spark.
4. No gas operation — sparks but no flame.
5. No cooling on any mode.
DC Volts 3
Wiring 7
Switch 4.1
AC Volts 1
Heating Element 2.1
Thermostat 2.2
Switch 4.1
Wiring 7.2
DC Volts 3
Igniter 4.2
Electrode 4.3
High Voltage Cable 4.4
Switch 4.1
Wiring 7.2
LP gas 5
Filter 6.2
Orifice 6.11
Burner 6.7
Shut-off Valve 6.1
Safety Valve 6.5
Thermocouple 6.6
Level 8.1
Ambient Temperature 8.5
Cooling Unit 8.6
6. No cooling on gas — cools properly on electric.
7. No cooling on electric — cools properly on gas.
8. Insufficient cooling on all modes.
9. Insufficient cooling on electric — cools properly
on gas.
LP Gas 5
Thermostat 6.3
Filter 6.2
Orifice 6.11
Burner 6.7
Flue Baffle 6.8
Flue Tube 6.10
AC Volts 1
Heating Element 2.1
Thermostat 2.2
Switch 4.1
Wiring 7.2
Level 8.1
Ventilation 8.2
Ambient Temperature 8.5
Air Leaks 8.3
Thermostats 2.2 & 6.3
Cooling Unit 8.6
AC Volts 1
Heating Elements 2.1
Thermostat 2.2
1
Dometic
®
RM2604/2804
Refrigerators
SYMPTOMSYMPTOM
SYMPTOM
SYMPTOMSYMPTOM
CAUSECAUSE
CAUSE
CAUSECAUSE
DIAGNOSTIC SERVICE MANUAL
REFERREFER
REFER
REFERREFER
TOTO
TO
TOTO
STEPSTEP
STEP
SECTIONSECTION
SECTION
SECTIONSECTION
STEPSTEP
10. Insufficient cooling on gas.
Cools properly on electric.
11. Freezes on electric – cools properly on gas.
12. Freezes on gas – cools properly on electric.
13. On gas mode, sparks while flame is lit.
14. Won't stay lit on gas.
LP Gas Pressure 5
Thermostat 6.3
Filter 6.2
Orifice 6.11
Burner 6.7
Flue Baffle 6.8
Flue Tube 6.10
Thermostat 2.2
Wiring 7.2
Bypass Screw 6.4
Thermostat 6.3
Electrode 4.3
LP Gas 5
Bypass Screw 6.4
Filter 6.2
LP Gas 5
Safety Valve 6.5
Thermocouple 6.6
Flue Baffle 6.8
Flue Cap 6.9
Orifice 6.11
Burner 6.7
15. Rapid formation of frost.
16. Interior light on when door is closed.
17. No DC operation – cools properly on AC and
gas.
18. Insufficient cooling on DC– cools properly on
AC and gas.
Food Storage 8.7
Air Leaks 8.3
Interior Liner Seal to Frame 8.9
High Humidity 8.8
Wiring 7.2
Door Switch 4.5
Door Position 8.4
DC Volts 3
Heating Element 4.7
Switch 4.1
Wiring 7.2
Relay 4.6
DC Volts 3
Heating Element 4.7
Relay 4.6
2
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