OMM-0153_E
• 5/11/2023 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 107 of 124
CENTURION Installation, Operation & Maintenance Manual
SECTION 10: TROUBLESHOOTING
10.2 Additional Faults Without Specific Fault Messages
Refer to Table 12.2 to troubleshoot faults which may occur without a specific fault message
being displayed.
TABLE 12.2: Water Heater Troubleshooting with No Fault Message Displayed
Observed
Incident
Probable Causes
Corrective Action
Hard Light-Off
1.
Clogged/damaged Gas
Injector on Igniter-
Injector (Figure 7.2-1).
1.
Disconnect the Staged Ignition Assembly solenoid from the
Gas injector Tube of the Igniter-Injector (Figure 7.2-1) and
inspect Gas Injector to ensure it is not clogged or damaged.
2.
Defective Staged Ignition
Solenoid (Figure 7.2-1).
2.
Close the Manual Shutoff Valve. Attempt to start the unit
and listen for a “clicking” sound that the Staged Ignition
Solenoid makes during Ignition Trial. If “clicking” sound is
not heard after 2 or 3 attempts, replace the Staged Ignition
Solenoid.
Fluctuating
Gas Pressure
1.
Gas pressure going into
unit is fluctuating.
1.
Stabilize gas pressure going into unit. If necessary,
troubleshoot Building Supply Regulator.
2.
Damping Orifice not
installed.
2.
Check if the gas train is supposed to have a Damping
Orifice, and if so, ensure that it is installed in the SSOV
Actuator, as shown in Figure 10.2-3, below.
Figure 10-1: Gas Train Component Locations (P/N 22362C Shown)
SSOV
