Technical information

21
TROUBLE SHOOTING
WARNING!
The following instructions are intended for qualified service personnel only.
Dangerous line voltage circuits are exposed during this procedure. Disconnect
the power before servicing the unit. Voltage may exceed 10,000 Vdc. Make sure
meter to be used has appropriate voltage rating.
Before beginning this section make sure to review the checkout and maintenance
sections!
Make sure all wiring is connected properly reference figures 8, 9, 10, and 11.
FIGURE 17 - CONTROL BOX COMPONENTS
FIGURE 18 - SEQUENCE CONTROLLER
Indicator light flickers / Unit makes zapping noises
Some flicker is inherent in neon indicator lights and is not an indication that anything is wrong. If the
indicator light blinks off and back on and is accompanied by a clicking or zapping noise that is frequent, it
is an indication that the electronic collector cell(s) may be dirty or damaged. A wash cycle should be
performed to clean the cell. An occasional blink or snapping is normal.
If the wash cycle does not eliminate the noise remove the cells and investigate them looking for bent
collector fins or a large particle stuck in a cell. Also check the contacts on the cells and inside the unit for
a possible bad connection.
Remove any particles taking care not to bend the collector plates or break any ionizing wires.
If any ionizing wires are broken reference the parts list for replacement.
If a collector plate is bent causing the arcing (bug zapper noise), one may attempt to bend the plate back
to an original position with a duckbilled pliers. Care must be used as further damage can be caused by
stretching the aluminum plates, which can render the cell unrepairable. Air Quality Engineering will