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General Information
Operational Issue
The pilot fails to light.
The main burner has an erratic flame or fails to
light.
Diagnostics Table
Component
Burner Assembly
Mixing Valve
Modulating Valve
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Potential Reason
The gas pressure is too low or absent.
The pilot gas line is blocked.
The pilot orifice is blocked.
The gas valve is defective.
The burner tube is blocked.
The burner tube is misaligned.
The main burner orifice is blocked.
The flame spreader is misaligned.
The air shutter requires adjustment.
The gas valve is defective.
4 General Information
Page
This section provides reference information on the
tooling, terminology, model identification, and
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components associated with the different models.
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I
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24
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4.1 Tools and Materials
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Dometic recommends that the following tools and
materials be used while servicing the appliance:
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Recommended Tools
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Common Hand Tools
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U-Tube Manometer
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Water Heater Board Tester
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Multi-Meter - DC/AC
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Voltage, Ohms Resistance,
DC Millivolts
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The images used in this document are for reference
purposes only. Components and component
locations may vary according to specific product
models. Measurements may vary ±0.38 in. (10 mm).
Water Heater
Page
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Wire Strippers/Crimpers
Jumper Wire
Leak Test Solution
Substance Temperature
Thermometer
EN
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