4 - MAINTENANCE & TROUBLESHOOTING
© Fulton 2018
4-26
VSRT_IOM_2018-1213
Troubleshooting Gas Fired Boilers
Problem
Cause
Remedy
Boiler will
not maintain
pressure
Gas Supply
Check gas pressure coming into gas train. If low, maintain
pressure contact gas company. Should be 3 in. to 13.8 in.
w.c. Check coil in gas valve with AMP meter. Replace if bad.
Check gas regulator setting and readjust as necessary.
Dirty Flue
Check flue for carbon buildup or blockage. Clean flue
passages with brush.
Pressuretrol
Disconnect all power to the controller. Disconnect the
wires from the controller. Put an OHM meter between the
switch terminals. Lower the set point of the controller.
Switch should make. Raise the set point and recheck with
OHM meter. Switch should break. If the controller operates
improperly, replace it.
Scale Built up in boiler
Refer to Recommended Daily Maintenance section of this
manual.
Damaged Refractory
Check refractories to see if they are cracked or broken in
pieces. Replace as necessary.
Steam traps blowing through Check traps to see if they are clean or replace as necessary.
Boiler Size
Boiler may be undersized.
Boiler is Surging
Steam traps blowing through Check traps to see if they are clean or replace as necessary.
Perc (cleaning solvent in
boiler)
Clean boiler with washing soda.
Scale build-up or lime
deposits
Call water treatment professional and consult factory.
Too much compound in
system (water treatment)
Dump feedwater tank and flush system. Have water tested
by water treatment company.
Too much water softener
Have water tested by water treatment company.
(high pH)
Too much of a load
Check total equipment horsepower required against
horsepower of boiler being used. Decrease amount of
equipment being used at one time.
Boiler new (not cleaned)
Clean per Boil Out procedure in this manual.
Boiler pushing
water with the
steam
Steam Traps
Check traps. Clean or replace as necessary.
Too much boiler compound
Dump feedwater tank and flush system. Have water tested
by water treatment company.
Pump will not
cut off
Dirty Probes
Clean or replace as necessary.
Relay failed
Make sure relay is plugged in tightly. If so, replace water
level relay.
Ground Connection
Check for tightness and clean.