Benchmark Platinum-Edge [ii]: Operation-Service Manual
SECTION 6
– TROUBLESHOOTING
OMM-0137_J
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10.2 ADDITIONAL FAULTS WITHOUT SPECIFIC FAULT MESSAGES
Refer to Table 10-2 to troubleshoot faults which may occur without a specific fault message being displayed.
TABLE 10-2: Boiler Troubleshooting with No Fault Message Displayed
Observed Incident
Probable Causes
Corrective Action
Hard Light-Off
1.
Clogged/damaged Gas Injector
on Igniter-Injector (Figure 8-1a
through Figure 8-1c).
1.
Disconnect the Staged Ignition Assembly solenoid from the Gas
injector Tube of the Igniter-Injector (Figure 8-1a through Figure 8-1c)
and inspect Gas Injector to ensure it is not clogged or damaged.
2.
Defective Staged Ignition
Solenoid (Figure 8-1a through
Figure 8-1c).
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
10-1, below. For DBB Gas Trains, the Damping Orifice is installed in
the downstream SSOV Actuator).
Figure 10-1: SSOV Actuator with Gas Pressure Adjustment (SKP25)
BRASS HEX HEAD
(Remove to access
the Gas Pressure Adjustment
Screw).
DAMPING ORIFICE
COVER SCREW
