FULTON VSRT Series Installation, Operation And Maintenance Manual page 98

MAINTENANCE & TROUBLESHOOTING
Problem Cause
Power Supply
Gas Supply
Ignition Electrodes
Burner Cut-Off
Air Switch
Dirty or defective UV Scanner
Scale on probes
Water pump will
Bad pump contactor
not come on at
times
Bad pump motor
Low fuel pressure Gas Pressure Regulator
Pump does not shut off
Relay failed
Ground Connection
Boiler Flooding
Vacuum created with boiler off
4-14
Remedy
Check fuse or circuit; reset or replace, as necessary.
Check to be sure main gas cock is not closed. Check coil in gas
valve with OHM meter. Replace if faulty. Check gas regulator
setting and readjust as necessary. Check inlet gas pressure and
increase or decrease as necessary.
Check electrodes for carbon buildup and clean if necessary.
Check for proper adjustment. Readjust if necessary. Check for
cracks in porcelain; if found replace.
Use a volt meter in series with the air switch to check to see if
the switch is making (closing). Also check the adjustment of
the air switch setting. If both above do not work, check the
range of the air switch and measure the burner fan pressure at
the air pressure switch sensing port to make sure the air switch
is within range.
Clean or replace.
Check and clean or replace as necessary.
Check to see if contactor is being powered. Check to see if
contactor coil is pulling in. Replace if necessary.
Check the incoming power to the pump to be sure it is
receiving power. If power is present but motor does not run,
replace it.
Check and replace.
Dirty probes. Clean or replace as necessary.
Make sure relay is plugged in tightly. If so, replace water level
relay.
Check for tightness and clean.
As the boiler cools off, it pulls water from the system piping.
To prevent this, add a 1/4" check valve on the steam gauge
assembly piping, which closes under pressure and opens
under vacuum.
SECTION 4
VSRT-IOM-2022-0728
© Fulton Group N.A., Inc. 2022