Carrier EACAAXCC0014 Installation And Operation Manual page 26

TROUBLESHOOTING
CAUTION:
• These procedures should only be attempted by a qualified HVAC
technician or electrician.
• Risk of personal injury could occur by attempting to troubleshoot or
repair this unit by untrained persons.
• Exercise the usual precautions when working with high voltage.
• When the circuit has been de-energized, always discharge any
residual current in the secondary with an insulated handle
_rewddver.
; =
• Always ground power supply and ionizing-collecting Ceil when
bench testing.
Recommended Service Tools
• Screwdriver, 8" common with insulated handle (plastic)
• Screwdrivers Phillips #1 and #2 with plastic insulated handles
• Needle nose pliers
• Multimeter
• High voltage probe
Indication of Electrical Trouble
The air cleaner is equipped with a Red CELL ENERGIZED light for indicating
proper unit operation. When the unit is in normal operation (with the HVAC
system fan running, access door in place and rocker switch in the ON
position) and the Red CELL ENERGIZED light is not lit, the problem is a
shorted secondary. Although failure of the indicating light itself should not
be overlooked, this condition is unusual and rather remote.
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