FULTON FB-A 10, Instruction, Operation And Maintenance Manual

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18-G 1/01
Troubleshooting
a. The following troubleshooting
guide will assist in the diagnosis and
the correction of minor field prob-
lems. It contains instruction and
information necessary to locate and
isolate possible troubles which
occur during normal operation. It
should be used in conjunction with
the unit wiring diagram and the
component literature provided in
Section 7 of this manual.
b. The following lists cover the most
common troubles that may occur on
the Fulton gas fired boilers. Refer
to left hand column of the chart to
locate the problem. Determine
which cause, listed in the center col-
umn, that represents the problem by
performing the corrective action as
listed in the right hand column titled
“REMEDY”.
Troubleshooting Gas-Fired Boilers
Problem Cause Remedy
Ignition Failure 1. Power Supply Check fuse or circuit breaker. Reset or
replace, as necessary.
2. Ignition Electrodes Check electrodes for carbon buildup and clean if necessary.
Check for proper adjustments. Readjust if necessary.
Check for cracks in porcelain. If found, replace.
3. Transformer Check voltage between transformer leads at terminal block
to be sure transformer is being powered.
4. Flame Safeguard Check voltage between ignition terminal and neutral.
Control Check must be made before control locks out on safety.
If no power, replace control.
5. Faulty Air Switch Check for bad air switch by jumpering the two air switch
leads at the terminal block. If the boiler starts and runs with
these terminals jumpered, the air switch should be
replaced.
6. Gas Valve Sticking Check for dirt in valve or orifice and clean if necessary.
(Pilot) Check for faulty actuator or valve and replace if necessary.
7. Gas Supply Check for gas pressure and for intermittent supply
problems. See test fire sheet for last elbow.
8. Loose wire connection Check connections to all components.
Flame Failure 1. Power Supply Check fuse or circuit breaker. Reset or replace, as
necessary.
2. Gas Supply Check for gas pressure and for intermittent supply
problems.
3. Ignition Electrodes Check electrodes for carbon buildup and clean if necessary.
Check for proper adjustment. Readjust if necessary.
Check for cracks in porcelain; if found, replace.
4. Primary Air Adjustment Check air adjustment. Air may be blowing flame away
from burner head.
LE Maintenance