Dometic GC10A-4E User Manual

2
EN
Contents Water Heater
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
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
Contents
Service Center & Dealer Locations
Visit: www.dometic.com
Read these instructions carefully.
2
EN
Contents Water Heater
Contents
Service Center & Dealer Locations
Visit: www.dometic.com
Read these instructions carefully.

Dometic GC10A-4E Specifications

General

Brand	Dometic
Model	GC10A-4E
Category	Water Heater
Language	English