Basic Air Compressor Diagnostics
The compressor does not run
Possible Causes:
- There is a loss of power or the motor is overheated.
- There is no power to the unit.
- The circuit breaker has tripped or a fuse has blown at the main power source.
- The thermal overload protector is actuated (Scenario 1).
- The thermal overload protector is actuated (Scenario 2).
- The thermal overload protector is actuated (Scenario 3).
- The thermal overload protector is actuated (Scenario 4).
- The thermal overload protector is actuated (Scenario 5).
- The pressure switch is bad.
- The compressor has reached automatic shutoff pressure.
Possible Solutions:
- Check for proper use of extension cord.
- Check to be sure the unit is plugged in.
- Check the fuse/breaker.
- Turn the air compressor OFF ( O ).
- Unplug air compressor and wait until compressor cools down.
- Plug the air compressor into an approved outlet.
- Depress the red reset button on the motor.
- Turn the air compressor to the AUTO position (I).
- Call us an Authorized Service Facility.
- Release the air from the tank until the compressor restarts automatically.
The motor hums while running slowly, or it doesn’t run at all
Possible Causes:
- There is low voltage from the power source.
- The wrong gauge wire or length of extension cord is being used.
- There is a shorted or open motor wiring.
- There is a defective check valve or unloader.
Possible Solutions:
The fuses blow or circuit breaker trips repeatedly
Possible Causes:
- The incorrect fuse type is being used (Scenario 1).
- The incorrect fuse type is being used (Scenario 2).
- The wrong gauge wire or length of extension cord is used.
- There is a defective check valve or unloader.
Possible Solutions:
- Check for the proper fuse.
- Use a time-delay fuse. Disconnect other electrical appliances from the circuit or operate the compressor on its own branch circuit.
- Check for the proper gauge wire and cord length.
- Call us an Authorized Online Service Facility.
The thermal overload protector cuts out repeatedly
Possible Causes:
- There is low voltage from the power source.
- There is a lack of proper ventilation, or the room temperature is too high.
- The wrong gauge wire or length of extension cord is being used.
Possible Solutions:
- Call your local electrician.
- Move the compressor to a well-ventilated area.
- Check for proper gauge wire and cord length.
The air receiver pressure drops when the compressor shuts off
Possible Causes:
- Out of Gasoline
- Low Oil Level
- Fault In Engine
Possible Solutions:
- Fill Fuel Back Up
- Fill Crankcase to proper level
- Call us an Authorized Online Service Facility.
There is excessive moisture in the discharge air
Possible Causes:
- The connections (fittings, tubing, etc.) are loose and leaking.
- The drain valve is loose or open.
- The check valve is leaking.
Possible Solutions:
- Check all connections with a soap and water solution and tighten.
- Tighten the drain valve.
- Call us an Authorized Online Service Facility.
The compressor continuously runs
Possible Causes:
- The pressure switch is defective.
- An excessive amount of air is being used.
Possible Solutions:
- Call us an Authorized Online Service Facility.
- Decrease the air usage; the compressor is not large enough for the tool’s requirement.
The air output is lower than normal
Possible Causes:
- The inlet valves are broken.
- The connections (fittings, tubing, etc.) are loose and leaking.
Possible Solutions:
- Call us an Authorized Online Service Facility.
- Tighten the connections.