Basic Air Compressor Diagnostics

 

The compressor does not run

Possible Causes:

  1. There is a loss of power or the motor is overheated.
  2. There is no power to the unit.
  3. The circuit breaker has tripped or a fuse has blown at the main power source.
  4. The thermal overload protector is actuated (Scenario 1).
  5. The thermal overload protector is actuated (Scenario 2).
  6. The thermal overload protector is actuated (Scenario 3).
  7. The thermal overload protector is actuated (Scenario 4).
  8. The thermal overload protector is actuated (Scenario 5).
  9. The pressure switch is bad.
  10. The compressor has reached automatic shutoff pressure.

Possible Solutions:

  1. Check for proper use of extension cord.
  2. Check to be sure the unit is plugged in.
  3. Check the fuse/breaker.
  4. Turn the air compressor OFF ( O ).
  5. Unplug air compressor and wait until compressor cools down.
  6. Plug the air compressor into an approved outlet.
  7. Depress the red reset button on the motor.
  8. Turn the air compressor to the AUTO position (I).
  9. Call us an Authorized Service Facility.
  10. 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:

  1. There is low voltage from the power source.
  2. The wrong gauge wire or length of extension cord is being used.
  3. There is a shorted or open motor wiring.
  4. There is a defective check valve or unloader.

Possible Solutions:

  1. Call your local electrician.
  2. Check for proper gauge wire and cord length.
  3. Call us an Authorized Online Service Facility.
  4. Call us an Authorized Online Service Facility.

The fuses blow or circuit breaker trips repeatedly

Possible Causes:

  1. The incorrect fuse type is being used (Scenario 1).
  2. The incorrect fuse type is being used (Scenario 2).
  3. The wrong gauge wire or length of extension cord is used.
  4. There is a defective check valve or unloader.

Possible Solutions:

  1. Check for the proper fuse.
  2. Use a time-delay fuse. Disconnect other electrical appliances from the circuit or operate the compressor on its own branch circuit.
  3. Check for the proper gauge wire and cord length.
  4. Call us an Authorized Online Service Facility.

The thermal overload protector cuts out repeatedly

Possible Causes:

  1. There is low voltage from the power source.
  2. There is a lack of proper ventilation, or the room temperature is too high.
  3. The wrong gauge wire or length of extension cord is being used.

Possible Solutions:

  1. Call your local electrician.
  2. Move the compressor to a well-ventilated area.
  3. Check for proper gauge wire and cord length.

The air receiver pressure drops when the compressor shuts off

Possible Causes:

  1. Out of Gasoline
  2. Low Oil Level
  3. Fault In Engine

Possible Solutions:

  1. Fill Fuel Back Up
  2. Fill Crankcase to proper level
  3. Call us an Authorized Online Service Facility.

There is excessive moisture in the discharge air

Possible Causes:

  1. The connections (fittings, tubing, etc.) are loose and leaking.
  2. The drain valve is loose or open.
  3. The check valve is leaking.

Possible Solutions:

  1. Check all connections with a soap and water solution and tighten.
  2. Tighten the drain valve.
  3. Call us an Authorized Online Service Facility.

The compressor continuously runs

Possible Causes:

  1. The pressure switch is defective.
  2. An excessive amount of air is being used.

Possible Solutions:

  1. Call us an Authorized Online Service Facility.
  2. Decrease the air usage; the compressor is not large enough for the tool’s requirement.

The air output is lower than normal

Possible Causes:

  1. The inlet valves are broken.
  2. The connections (fittings, tubing, etc.) are loose and leaking.

Possible Solutions:

  1. Call us an Authorized Online Service Facility.
  2. Tighten the connections.