10
GENERAL TROUBLE SHOOTING
TROUBLE
POSSIBLE CAUSE
REMEDY
Pilot will not ignite or does not
hold.
a. Gas not reaching unit.
b.
Main “gas cock knob” not in
ON position.
c. Air pocket or clog in gas line.
d. Defective wiring or poor
connection at pilots at power
unit.
e. Defective switching across
either the water level control
or pressure switches.
f.
Defective gas valve.
a. Check to make sure gas is
on and gas line is purged of
air.
b.
Depress and turn “main gas
cock” to pilot position - (refer
to lighting instructions).
c. Purge or blow out gas line.
d. Check - replace or tighten.
e. Make continuity check
–
replace units that are
defective.
f.
Replace gas valve.
Water enters boiler very slowly.
a. Clogged strainer screen on
water fill solenoid valve
b. Debris or lime accumulation
on seat of water fill valve.
a. Clean or replace strainer
screen. (P/N 08-4871).
b.
Clean valve seat
Boiler overfills with water.
a. Probes scaled.
b. Water supply valve fails to
close.
c.
Defective water level control.
a. Clean.
b. Clean valve seat or replace
valve.
c. Follow the test procedure on
page 12. Replace if
defective.
Main Burners will not ignite or will
not remain lighted.
a. No water in boiler.
b. Main gas cock or supply line
not open.
c. Pressure switch set too low.
d. No voltage to gas valve.
e.
Gas valve defective.
a. Check to be sure water
switch is on. Check to be
sure main water supply is on
and the electrical supply to
unit is on.
b. Open.
c. Reset - if continuity check
shows to be defective -
replace.
d. Check main fuse.
e.
Replace.
Boiler fails to build up any
pressure when the water is at the
correct level and the fuel switch
is turned on.
a. Check to see that main gas
is turned on.
b. Check to see that gas valve
is
in burners “on” position.
c. Current flow is broken at
water level control (ascertain
with continuity check).
d. Current flow is broken at
pressure control or high limit
control switches (ascertain
with continuity check).
a. Turn on.
b.
Turn to burners “on”.
c. Check for voltage thru right
side of control board, replace
if defective.
d. Re-adjust to proper setting -
refer to instruction for re-
adjustment, replace if
defective.
Boiler fails to cut off after
reaching
operating pressure.
a. Pressure switch set too high
or defective.
b. Gas valve fails to cut off gas
supply when demands of
pressure switch have been
met.
a. Adjust or replace if defective.
b. Replace gas valve.
Water level in gauge glass
fluctuates up and down.
a. Top shutoff valve on water
gauge glass is closed.
a.
Open.
