ELECTRICAL TROUBLESHOOTING FLOW CHART
PROBLEM
POSSIBLE CAUSES
REMEDY
Operation light off
Shorted cells.
Defective light.
Defective power supply.
See Electrical Troubleshooting Guide section.
Blower not operating.
Energize blower.
Cells wet either due to high humidity or from washing.
Dry cells by operating system fan continuously for 30
minutes.
Unit snaps or arcs continuously
Line voltage too high.
Adjust line voltage.
Cells need cleaning.
Clean cells.
Broken ionizer wire.
Replace wire.
Broken contact spring on cell.
Replace spring.
Broken insulator in cell.
Replace insulator.
Broken insulator in power door.
Replace insulator.
Foreign material lodged in ionizer or between plates.
Remove object.
Bent plates.
Straighten.
Humming noise
Improper wiring connections.
Correct.
Loose ionizer wires.
Replace or repair.
Ionizer wires not centered.
Center wires between plates.
Excessively dirty ionizer or collector.
Clean.
Deformed contact spring on cell.
Adjust spring.
Air cleaner does not clean dirt
Lack of power to cells because of improper alignment of
contact spring cells to power door.
Adjust alignment or replace spring.
Defective interlock plug or receptacle.
Replace.
Air volume too great.
Reduce air volume to design CFM.
Leaks in ductwork on clean air side of air cleaner.
Seal.
Dirty air not being delivered to air cleaner.
Check return-air grilles for obstruction by furniture,
drapes, etc. Clean any obstruction.
Uneven air distribution across face of unit may be indi-
cated by uneven loading pattern of dirt in collector sec-
tion of air cleaning cells. The entering-air side of collec-
tor stage should be evenly covered with dirt. In the case
of the 2 cell units, each cell should have an even load-
ing pattern.
Install turning vanes of air baffles.
CAUTION: Do not block off any of the entering-air side
opening to the unit.
Radio or TV interference
Accumulation of foreign particles lodged in ionizer sec-
tion
Remove.
Unit improperly grounded.
Provide good ground to power pack.
Ground line of supply line voltage not properly
grounded.
Correct.
Loose ionizer wires.
Replace.
Loosely connected components or primary-voltage wir-
ing.
Tighten.
Defective power pack.
Replace.
Dents in collector section or ionizer section.
Straighten.
Improper contact between power door and cells.
Adjust alignment of contact spring.
Weak station/poor ground.
Add E.M.I./R.F.I. filter in power line.
Defective insulator.
Replace.
White dust on furnishings
This dust can be described as "clean dirt" and is com-
posed mainly of lint, which, because of its weight settles
in the living space before it reaches the air returns. It is
"white" because the submicron dirt particles, which nor-
mally would color it and render it invisible, have been
removed from the air space.
This problem requires no solution. It is visible evidence
that the air cleaner is cleaning up the staining and soil-
ing dirt particles from the living space.
Ozone odor
Initial break-in period may have a noticeable ozone
odor.
See Maintenance and Routine Service section.
Air volume too low.
Increase air volume to design CFM.
Uneven air distribution across face of unit.
Ensure full opening of return-air is used. Do not block off
any part of return surface area.
Air cleaner oversized for application.
Size air cleaner per design CFM rating.
Air cleaner not shutting off during blower off cycle.
Check wiring and ensure that the air cleaner does not
operate when blower is off.
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