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TROUBLESHOOTING GUIDE
SYMPTOM
Compressor will not run
1.
2.
3.
4.
5.
6.
7.
Motor hums but cannot run
1.
or runs slowly
2.
3.
4.
Fuses blow/circuit breaker
1.
trips repeatedly
2.
3.
Thermal overload protector
1.
cuts out repeatedly
2.
3.
4.
Air tank pressure drops when
1.
compressor shuts off
2.
3.
4.
Excessive moisture in
1.
discharge air
2.
Compressor runs continuously
1.
2.
3.
Compressor vibrates
Air output lower than normal
1.
2.
3.
POSSIBLE CAUSE(S)
Unit is plugged into extension cord
No electrical power
Blown fuse
Breaker open
Thermal overload open
Pressure switch defective
Shorted or open motor winding
Low voltage
Unit is plugged into extension cord
Shorted or open motor winding
Defective check valve or unloader
Incorrect size fuse, circuit overloaded
Unit is plugged into extension cord
Defective check valve or unloader
Low voltage
Clogged air filter
Lack of proper ventilation / room
temperature too high
Unit is plugged into extension cord
Loose connections (fittings, tubing,
etc.)
Loose drain valve
Check valve leaking
Check tank for cracks or pin holes
Excessive water in air tank
High humidity
Defective pressure switch
Excessive air usage
Air leaks
Loose mounting bolts
Broken inlet valves
Intake filter dirty
Connections leaking
12
H-10916
CORRECTIVE ACTION
1.
Remove extension cord or use larger gauge
extension cord
2.
Turn on pressure switch? Plugged in? Check fuse/
breaker or motor overload
3.
Replace blown fuse
4.
Reset, determining why problem happened
5.
Unplug and allow motor to cool before trying to
restart
6.
Replace
7.
Replace motor
1.
Check with voltmeter
2. Remove extension cord or use larger gauge
extension cord
3.
Replace motor
4.
Replace or repair
1.
Check for proper fuse, use time-delay fuse.
Disconnect other electrical appliances from circuit or
operate compressor on its own branch circuit
2.
Remove extension cord or use larger gauge
extension cord
3.
Replace or repair
1.
Check with voltmeter
2.
Clean filter (see Maintenance section)
3.
Move compressor to well ventilated area
4.
Remove extension cord or use larger gauge
extension cord
1.
Check all connections with soap and water solution
and tighten
2.
Tighten
3.
Disassemble check valve assembly, clean or replace
Do not disassemble check valve
with air in tank; bleed tank first.
4.
Replace tank. Never repair a damaged tank.
1.
Drain tank
2.
Move to area of less humidity; use air line filter
1.
Replace switch
2.
Decrease air usage; compressor not large enough for
a requirement
3.
Check all connections with soap and water
Tighten
1.
Have authorized service representative repair unit
2.
Clean or replace intake filter
3.
Tighten connections
0623 IH-10916VND
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