AEG AC756S - Troubleshooting

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TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
Compressor will not run Loss of power or overheating Check for proper use of extension cord
No electrical power Check to be sure unit is plugged in
Check fuse/breaker
Blown shop/house fuse Replace shop/house blown fuse
Shop/house breaker open Reset shop/house breaker, determining why problem
happened
Current limiting protector open Reset motor overload to restart after motor has cooled.
Bad pressure switch Replace pressure switch
Tank is at maximum pressure Compressor will turn on when tank pressure drops to cut-
in pressure
Motor hums but cannot run or runs
slowly
Low voltage Check with voltmeter
Wrong gauge wire or length of extension
cord
Check for proper gauge wire and cord length
Shorted or open motor winding Take compressor to service centre
Defective check valve or unloader Take compressor to service centre
Current limiting protector cuts out
repeatedly
Low voltage Check with voltmeter
Lack of proper ventilation/room
temperature too high
Move compressor to well-ventilated area
Wrong gauge wire or length of extension
cord
Check for proper gauge wire and cord length
Air tank pressure drops when
compressor shuts o
Loose connections (fittings, tubing, etc.) Check all connections with soap and water solution and
tighten
Loose drain valve Tighten drain valve
Check valve leaking Take compressor to service centre
DANGER! Do not disassemble check valve, tank drain
valve or pressure relief valve with air in tank — bleed tank.
Excessive moisture in discharge air Excessive water in air tank Drain tank
High humidity Move to area of less humidity; use air line filter
Compressor runs continuously Defective pressure switch Take compressor to service centre
Excessive air usage Take compressor to service centre
Decrease air usage; compressor not large enough for
tool’s requirement
Piston rings are worn Replace piston rings; air inlet filter is blocked, call customer
service for assistance
Air output lower than normal Broken inlet valves Take compressor to service centre
Connections leaking Tighten connections