Super Hot AAA-3000 series, Инструкция по установке и обслуживанию

Страница: 33 / 36

AAA Series Gas Boiler – Installation and Service Manual
33
Problem Possible Cause Solution
•
Negative draft.
•
Incorrect vent size or blocked vent.
• Insufficient combustion air to boiler. • Check combustion and ventilation air opening
in boiler room meets installation code
requirements, and combustion air flow
openings in the boiler base and burner tray are
not blocked.
Gas odor.
• Leak in gas system. • See “What to do if you smell gas” on cover.
Have gas fitter test system and repair leaks.
• Carbon build up on the heat exchanger,
caused by improper venting, ventilation air or
low return water temperature.
• Have a qualified service technician inspect and
clean the heat exchanger and check and adjust
the system.
Flame roll out on ignition
or during operation.
• Negative draft. • Check venting.
• Improper pilot flame. • Adjust pilot flame.
•
Thermocouple lead to gas valve is loose.
•
Check and tighten lead.
Pilot outages with
standing pilot.
•
Thermocouple is defective.
•
Replace thermocouple.
•
No spark.
•
High voltage wiring is loose, broken or
grounded. Repair wiring.
• Ignition electrodes are damaged. • Replace electrodes.
•
Ignition electrodes improperly adjusted.
•
Correct adjustment of electrode.
• Faulty electronic ignition controller. • Replace controller.
•
No gas.
•
Confirm supply of gas to pilot and repair if
necessary.
•
Gas supply pipes not purged of air.
•
Purge gas line.
•
Low pilot gas pressure.
•
Adjust pressure.
Pilot flame will not light on
electronic ignition.
•
Dirt or foreign material in pilot.
•
Clean.
•
Incorrect pilot flame pressure.
•
Set pilot pressure to correct pressure.
•
Poor connections in wiring to flame sensor.
•
Repair wiring.
• Electrodes are damaged. • Replace electrodes.
Pilot lights but flame
failure after trial for
ignition.
•
Ignition electrodes improperly adjusted.
•
Correct adjustment of electrodes.
• Ignition electrodes are wet, dirty or improperly
adjusted (for electronic ignition only).
• Check, clean, change and/or adjust the
electrodes.
Burner starts but flame
will not stay established.
•
Poor connections in wiring to flame sensor.
•
Repair wiring.
•
Incorrect orifice sizing.
•
Check orifice and replace if necessary.
•
Inadequate combustion and ventilation air.
•
Check and adjust.
• Dusty environment. • Clean.
•
Low return water temperature.
•
Adjust system.
Boiler carbonizes (forms
soot) quickly.
• Manifold pressure too high. • Adjust manifold pressure.
•
Insufficient circulation.
•
Check pump, clean and replace if necessary.
• Air trapped in piping. • Purge system.
Boiler overheats and
system remains cold.
•
Improper system wiring.
•
Test and correct.
• Faulty thermostat or controller. • Check, adjust, and replace if necessary.
•
Faulty aquastat and/or safety high limit
aquastat.
•
Check, adjust, and replace if necessary.
Boiler and heating system
overheat.
• Faulty wiring. • Check wiring for short circuits and repair.