Справочник Пользователя для Market Forge Industries M24G100A-4SP
9
GENERAL TROUBL-SHOOTING
TROUBLE
POSSIBLE CAUSE
REMEDY
Boiler fails to reach full operating
pressure of 5 lbs. or 15 lbs.
Pressure gauge reads inaccu-
rately.
Pressure control and high limit
Pressure control and high limit
control switches are out of ad-
justment.
Safety valve not seating prop-
Safety valve not seating prop-
erly.
Water level too high.
Air vent not venting properly.
Insufficient flames on burners
Water level too high.
Air vent not venting properly.
Insufficient flames on burners
or improper gas supply.
1.
2.
3.
4.
5.
6.
5.
6.
Replace.
Follow instructions for readjust-
Follow instructions for readjust-
ing. (page 10)
Purge manually or replace.
Adjust water level control
Purge manually or replace.
Adjust water level control
- check water feed valve for
sticking - clean or replace.
Replace.
See instructions on gas adjust-
Replace.
See instructions on gas adjust-
ments. (page 5)
1.
2.
2.
3.
4.
4.
5.
6.
6.
Boiler fails to cut off after reaching
operating pressure.
Pressure switch set too high or
defective.
Gas valve fails to cut off gas
Gas valve fails to cut off gas
supply when demands of pres-
sure switch have been met.
1.
2.
Adjust or replace if defective.
Replace gas valve.
Replace gas valve.
1.
2.
2.
Safety valve blows off prematurely.
Pressure set too high.
Pressure gauge reads incor-
Pressure gauge reads incor-
rectly.
Lime or debris on seat of valve
Lime or debris on seat of valve
1.
2.
2.
3.
Readjust pressure control.
(page 10)
Replace.
Purge or replace.
Replace.
Purge or replace.
1.
2.
3.
3.
Boiler builds up to pressure, shuts
down, fails to come back on.
1. High limit switch set to low
or operating pressure control
switch set too high.
1.
1. Follow instructions for read-
justing, see (page 10) Replace
if defective.
1.
Water does not enter boiler.
Main water supply off.
Power not reaching unit.
Probes Dirty.
Water level control board defec-
Power not reaching unit.
Probes Dirty.
Water level control board defec-
tive.
Solenoid valve defective
Solenoid valve defective
1.
2.
3.
4.
2.
3.
4.
5.
Turn on.
Check main fuse or circuit.
Remove & Clean
See page 11 for test procedure.
If Voltage is verified at solenoid
Check main fuse or circuit.
Remove & Clean
See page 11 for test procedure.
If Voltage is verified at solenoid
coil, but fails to open, replace
solenoid.
1.
2.
3.
4.
5.
2.
3.
4.
5.
Cold water condenser does not
function.
Main water supply off.
Thermostat defective.
Loose coil nut.
Solenoid coil not energized.
Thermostat defective.
Loose coil nut.
Solenoid coil not energized.
1.
2.
3.
4.
2.
3.
4.
Turn on.
Replace if defective.
Tighten coil nut.
Check coil for continuity, if open
Replace if defective.
Tighten coil nut.
Check coil for continuity, if open
replace.
1.
2.
3.
4.
2.
3.
4.
Air vent leaking.
Not closing.
1.
Replace.
1.