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8
GENERAL TROUBL-SHOOTING
TROUBLE POSSIBLE CAUSE REMEDY
Pilot will not ignite or does not hold. Gas not reaching unit.
Main “gas cock knob” not in
ON position.
Air pocket or clog in gas line.
Defective wiring or poor con-
nection at pilotstat power unit.
Defective switching across
either the water level control or
pressure switches.
Defective gas valve.
1.
2.
3.
4.
5.
6.
Check to make sure gas is on
and gas line is purged of air.
Depress and turn “main gas
cock” to pilot position - (refer to
lighting instructions).
Purge or blow out gas line.
Check - replace or tighten.
Make continuity check - replace
units that are defective.
Replace gas valve.
1.
2.
3.
4.
5.
6.
Water enters boiler very slowly. Clogged strainer screen on
water ll solenoid valve
Debris or lime accumulation on
seat of water ll valve.
1.
2.
Clean or replace strainer
screen. (P/N 08-4871).
Clean valve seat
1.
2.
Boiler overlls with water Probes scaled.
Water supply valve fails to
close.
Defective water level control.
1.
2.
3.
Clean.
Clean valve seat or replace
valve.
Follow the test procedure on
page 11. Replace if defective.
1.
2.
3.
Main Burners will not ignite or will
not remain lighted.
No water in boiler.
Main gas cock or supply line
not open.
Pressure switch set too low.
No voltage to gas valve.
Gas valve defective.
1.
2.
3.
4.
5.
Check to be sure water switch
is on. Check to be sure main
water supply is on and the elec-
trical supply to unit is on.
Open.
Reset - if continuity check
shows to be defective - replace.
Check main fuse.
Replace.
1.
2.
3.
4.
5.
Boiler fails to build up any pressure
when the water is at the correct
level and the fuel switch is turned
on.
Check to see that main gas is
turned on.
Check to see that gas valve is
in burners “on” position.
Current ow is broken at water
level control (ascertain with
continuity check).
Current ow is broken at pres-
sure control or high limit control
switches (ascertain with conti-
nuity check).
1.
2.
3.
4.
Turn on.
Turn to burners “on”.
Check for voltage thru right
side of control board, replace if
defective.
Re-adjust to proper setting -
refer to instruction for re-adjust-
ment, replace if defective.
1.
2.
3.
4.
Water level in gauge glass
uctuates up and down.
Top shutoff valve on water
gauge glass is closed.
1. Open.1.