Table Of Contents - Dometic G6A-8E Service Manual

Contents Contents
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Contents Contents
1 Explanation of Symbols and Safety
Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Recognize Safety Information . . . . . . . . . . . . . 3
1.2 Understand Signal Words . . . . . . . . . . . . . . . . 3
1.3 Supplemental Directives . . . . . . . . . . . . . . . . . 3
1.4 General Safety Messages . . . . . . . . . . . . . . . . 3
2 Intended Use . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . 5
4 General Information . . . . . . . . . . . . . . . . . . . . . 8
4.1 Tools and Materials . . . . . . . . . . . . . . . . . . . . . 8
4.2 Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.3 Model Identification . . . . . . . . . . . . . . . . . . . 10
4.4 Component Locations. . . . . . . . . . . . . . . . . . 11
4.5 Sequence of Operations . . . . . . . . . . . . . . . . 13
5 Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . 15
6 Diagnostic Procedures . . . . . . . . . . . . . . . . . . 20
6.1 Component-Based Diagnostics . . . . . . . . . .20
6.2 Error-Based Diagnostics . . . . . . . . . . . . . . . .28
7 Installation Issues . . . . . . . . . . . . . . . . . . . . . . 29
7.1 Power Issues . . . . . . . . . . . . . . . . . . . . . . . . .29
7.2 Gas Pressure Issue . . . . . . . . . . . . . . . . . . . . .29
8 Service Procedures . . . . . . . . . . . . . . . . . . . . . 29
8.1 Accessing the Components . . . . . . . . . . . . . 31
8.2 Shutting Down the Water Heater . . . . . . . . .32
8.3 Performing a Gas Leak Test . . . . . . . . . . . . . .32
8.4 Performing a Thermostat or E.C.O.
Continuity Test . . . . . . . . . . . . . . . . . . . . . . . .32
8.5 Replacing a Thermostat or E.C.O. . . . . . . . .33
8.6 Performing a Thermal Cut-Off
Continuity Test . . . . . . . . . . . . . . . . . . . . . . . .33
2 2
8.7 Replacing a Thermal Cut-Off . . . . . . . . . . . . .34
8.8 Performing an Ohms Test on the Gas
Solenoid Valve Coils . . . . . . . . . . . . . . . . . . .35
8.9 Replacing the Gas Solenoid Valve . . . . . . . .35
8.10 Removing the Orifice for Cleaning . . . . . . . .36
8.11 Performing an Ohms Test on the
Heating Element . . . . . . . . . . . . . . . . . . . . . .36
8.12 Replacing the Heating Element . . . . . . . . . .37
8.13 Replacing a Control Board . . . . . . . . . . . . . .37
8.14 Replacing the Relay . . . . . . . . . . . . . . . . . . . .38
8.15 Replacing the Electrode . . . . . . . . . . . . . . . .38
8.16 Adjusting the Electrode Gap . . . . . . . . . . . .39
8.17 Re-establishing the Thermal Expansion
Air Pocket . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
8.18 Replacing the P/T Valve . . . . . . . . . . . . . . . . .40
8.19 Confirming the Bypass Kit Placement . . . . .40
8.20 Performing a Wall Switch Continuity Test . . . 41
8.21 Replacing the Mixing Valve . . . . . . . . . . . . . .42
8.22 Bypassing the Pressure Switch . . . . . . . . . . .42
8.23 Performing a Pressure Switch
Continuity Test . . . . . . . . . . . . . . . . . . . . . . . .43
8.24 Replacing the Pressure Switch . . . . . . . . . . .43
8.25 Tightening the Cold-Weather
Thermostat Set Screw . . . . . . . . . . . . . . . . . .44
8.26 Performing a Cold-Weather Thermostat
Continuity Test . . . . . . . . . . . . . . . . . . . . . . . .44
8.27 Replacing the Cold-Weather
Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . .44
8.28 Adjusting the Winter/Summer Setting . . . . .45
8.29 Replacing the Modulating Valve . . . . . . . . . .45
8.30 Performing a Reed Switch
Continuity Test . . . . . . . . . . . . . . . . . . . . . . .46
8.31 Performing a Thermocouple Circuit Test . . .47
8.32 Testing the Thermocouple . . . . . . . . . . . . . .47
8.33 Replacing the Thermocouple . . . . . . . . . . . .48
9 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . 48
9.1 Cleaning the Mixing Valve Screen . . . . . . . .48
9.2 Flushing the Tank . . . . . . . . . . . . . . . . . . . . . .49
Water Heater Water Heater
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