Dometic GC6AA-10E - User Manual

HEATING
WATER HEATERS
Form No. 94840 01/20 | ©2020 Dometic Corporation
WARNING
Cancer and Reproductive Harm
www.P65Warnings.ca.gov
G6A-8E, GH6-8E, G10-3E, GH10-3E, WH-6GA, GC6AA-10E, GCH6A-10E, GC10A-4E,
GCH10A-4E, WH-6GEA, OD-5001, G6A-7, G10A-2, G9-EXT, G16-EXT,
GE9-EXT, GEH9-EXT, WH-9EXT, GE16-EXT, GEH16-EXT
EN
Water Heater
Service Manual ........................2

WARNING: BURN HAZARD, FIRE,
EXPLOSION, AND/OR CARBON MONOXIDE
HAZARD.
Keep the Water Heater area clear of combustible
cleaning materials, gasoline, and other flammable
vapors and liquids. Failure to obey this warning
could result in death or serious injury.
WARNING: If the information in this manual is not followed
exactly, a fire or explosion may result, causing property
damage, personal injury, or death.
– Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
– WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch.
• Do not use any phone in your recreational vehicle.
• Clear the recreational vehicle of all occupants.
• Turn off the gas supply tank valve(s) or main gas supply.
• Immediately call your gas supplier for instructions. If you
cannot reach your gas supplier, call the fire department.
– Have the gas system checked and leakage source corrected by
a qualified installer, service agency, manufacturer or dealer, or
the gas supplier.

Dometic GC6AA-10E Specifications

General

Brand	Dometic
Model	GC6AA-10E
Category	Water Heater
Language	English

Summary

Explanation of Symbols and Safety Instructions

Recognize Safety Information

Identifies the safety alert symbol and its meaning for hazard warnings.

Understand Signal Words

Explains signal words (DANGER, WARNING, CAUTION) for hazard severity.

General Safety Messages

Highlights specific hazards like carbon monoxide poisoning.

Troubleshooting

Diagnostic Procedures

Component-Based Diagnostics

Guides troubleshooting by diagnosing individual components.

Error-Based Diagnostics

Helps diagnose operational errors using fault codes and a diagnostic table.

Installation Issues

Power Issues

Gas Pressure Issue

Service Procedures

Accessing the Components

Shutting Down the Water Heater

Performing a Gas Leak Test

Procedure for safely testing the gas system for leaks.

Performing a Thermostat or E.C.O. Continuity Test

Tests continuity of thermostat and E.C.O. components.

Replacing a Thermostat or E.C.O.

Step-by-step guide for replacing thermostat or E.C.O. components.

Performing a Thermal Cut-Off Continuity Test

Checks for continuity in the thermal cut-off component.

Replacing a Thermal Cut-Off

Instructions for removing and installing a new thermal cut-off.

Performing an Ohms Test on the Gas Solenoid Valve Coils

Measures resistance of gas solenoid valve coils to check for faults.

Replacing the Gas Solenoid Valve

Detailed steps for replacing the gas solenoid valve assembly.

Removing the Orifice for Cleaning

Performing an Ohms Test on the Heating Element

Tests the resistance of the heating element.

Replacing the Heating Element

Guide for replacing the screw-in or bolt-in heating element.

Replacing a Control Board

Steps for removing and installing a new water heater control board.

Replacing the Relay

Instructions for removing and replacing the relay component.

Replacing the Electrode

Steps for removing and installing the electrode.

Adjusting the Electrode Gap

Re-establishing the Thermal Expansion Air Pocket

Replacing the P;T Valve

Performing a Wall Switch Continuity Test

Replacing the Mixing Valve

Bypassing the Pressure Switch

Performing a Pressure Switch Continuity Test

Replacing the Pressure Switch

Tightening the Cold-Weather Thermostat Set Screw

Performing a Cold-Weather Thermostat Continuity Test

Replacing the Cold-Weather Thermostat

Adjusting the Winter;Summer Setting

Replacing the Modulating Valve

Performing a Reed Switch Continuity Test

Performing a Thermocouple Circuit Test

Testing the Thermocouple

Replacing the Thermocouple

Maintenance

Checking the DSI Control Board

Inspecting the Burner and Burner Assembly

Resetting a Locked-Out Control