Download 318557-000 - State Water Heaters

Fault Messages
Displayed Message/Condition/Indicates
Ignition Failure
• Ensure the main gas shut off valve is open.
The Control System has detected less than 1.0 μA (DC
micro amps) through the flame sensor during the Ignition
Verification operating state on three consecutive trials for
ignition.
Ignition Failure
Fault occurred 2 mins ago
The water heater has failed to
ignite the burner.
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Possible Causes - Check/Repair
ADVANCED
Important Service Reminder:
When performing any troubleshooting steps outlined in
this manual always consider the wiring and connectors
between components. Perform a close visual inspection
of all wiring and connectors to a given component before
replacement.
• Ensure there is adequate air for combustion &
ventilation. See air requirements in the Instruction
Manual that came with the water heater.
• Ensure the correct fuel type is being used. See the
rating label on the water heater for fuel type.
• Visually check for burner flame through the Burner
Sight Glass during the Ignition Verification operating
state. See Figure 4 on page 9 to locate the Burner
Sight Glass. The animated Gas Valve Status Icon
appears on the Desktop Screen during the Ignition
Verification operating state. See Desktop Screen on
page 46 and Status Icons on page 47.
• Ensure the Burner is grounded - see the Electrical
Requirements on page 6 and Figure 10 on page 13.
• Ensure Flame Sensor wiring is securely plugged in at
the CCB’s J4 male spade connector (page 41).
• Check the Flame Sensor wiring between the J4
connector on the CCB and the Burner Adapter Wiring
harness behind the CCB enclosure. See Figure 5
on page 9 and Figure 8 on page 12. Repair/replace
anything worn or damaged as necessary.
• Ensure the 24 Volt Gas Valve is being energized.
Perform the Gas Valve Voltage Tests on page 23.
• Check the supply gas pressure and manifold offset
pressures. Perform the Gas Pressure Test on page 26.
If the supply gas pressure is below the minimum
requirement shown in Table 2 on page 25 raise/restore
supply gas pressure to minimum requirement. If supply
gas pressure is above maximum requirement - reduce
supply gas pressure below maximum requirement.
• Ensure fuel gas is flowing through the 24 Volt Gas
valve. Perform the Gas Flow Test on page 27.
• Ensure the correct gas orifice is being used for the
fuel type. Ensure the gas orifice is not missing or
damaged. Natural gas models orifice size is 0.191".
Propane gas models orifice size is 0.162". See Gas
Valve Removal on page 24 to check the gas orifice.
Proceed to the next page
Servicing should only be performed by a Qualified Service Agent
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