Olsen HTL-90D, Инструкция по установке, эксплуатации и обслуживанию

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OIl PRIMARY cONTROl -TROubleshOOTINg
Table 12: System and General Trouble Shooting continued from previous page
Problem Possible Cause Remedy
Furnace will not start
Photo Cell wiring shorted or room
light leaking into photo cell com-
partment.
Check photo cell (cad cell) wiring for short circuits. Also, check for room
light leaking into cad cell compartment. Repair light leak if necessary. See
Table C-3
Open safety switch
Check for open limit or auxiliary limit. Also, check internal wiring connec-
tions; loose connectors, etc.
Furnace will not start without
first pushing oil primary con-
trol reset button.
(Happens on frequent basis.)
No fuel oil.
Check fuel oil supply. Check that all hand operated fuel oil valves are in the
open position. Fill oil storage tank if necessary.
Clogged nozzle.
Replace nozzle with high quality replacement. Use rating plate or Tables in
Appendix A as a guide.
Clogged oil filter. Replace oil tank filter or in-line filter if used.
Low oil pump pressure.
Connect pressure gauge to oil pump. Adjust pump pressure, or replace oil
pump if necessary. Ensure that erratic pressure readings are not caused by
defective fuel oil line.
Air getting into fuel oil lines, or fuel
oil line dirty, clogged, or in some
manner defective.
Check fuel oil lines. Replace any compression fittings found with high
quality flared fittings. Check for any signs of oil leaks. Any oil leak is a
potential source of air or contaminants.
Defective burner motor.
Check burner motor. If burner motor is cutting out on over-load, deter-
mine why. Replace if necessary
Furnace starts, but cuts out
requiring manually resetting
the oil protector reset button.
Photo Cell (Cad Cell) defective.
If cad cell is dirty, clean it. (Determine why cad cell is getting dirty). If cad
cell is poorly aimed, realign it. NOTE: The photocell should have a resis-
tance of 100Ω in absence of light; a maximum of 1500 Ω in the presence of
light. Ensure that room light is not leaking into the cad cell compartment
(See diagnostic light section).
Furnace starts, but cuts out
requiring manually resetting
the oil protector reset button
No fuel oil.
Check fuel oil supply. Check that all hand operated fuel oil valves are in
the open position. Fill oil storage tank if necessary.
Clogged Nozzle.
Replaces nozzle with high quality replacement. Use rating plate or Tables
in Appendix A as a guide.
Clogged oil filter. Replace oil tank filter or in-line filter if used.
Low oil pump pressure.
Connect pressure gauge to oil pump. Adjust pump pressure, or replace oil
pump if necessary. Ensure that erratic pressure readings are not caused by
defective fuel oil line.
Air getting into fuel oil lines, or fuel
oil line dirty, clogged, or in some
manner defective.
Check fuel oil lines Replace any compression fittings found with high
quality flared fittings. Check for any signs of oil leaks. Any oil leak is a
potential source of air or contaminants.
Defective burner.
Check burner motor. If burner motor is cutting out on over-load, deter-
mine why. Replace if necessary.
Water or contaminants in oil. Drain fuel oil storage tank; replace fuel oil. (Consult with fuel oil supplier).
Frozen oil line.
Gently warm oil line. Insulate oil line. (Outdoor piping size may require
increased diameter).
Oil burner sputtering at nozzle
Electrodes out of adjustment or
defective.
Check electrode settings. Check electrodes for dirt build-up or cracks in
porcelain.
Poor transformer high voltage con-
nections or defective transformer.
Check contacts between the igniter and electrodes. If OK, replace the
igniter.
Fuel oil filter clogged. Replace fuel oil storage tank filter and/or fuel oil in-line filter.
Defective oil pump.
Check burner motor and/or fuel oil pump coupling. Check oil pump pres-
sure. Replace fuel oil pump if necessary.
Fuel oil line partially clogged or
contains air.
Bleed air from oil line. If problem persists, replace oil line.
Clogged nozzle. Replace nozzle or clean it out.