Harbor Freight Tools 68149, 67696 Troubleshooting Problem Possible Causes Likely Solutions

Troubleshooting

Problem		Possible Causes		Likely Solutions
Compressor	1. No power at outlet.		1.	Reset circuit breaker, or have outlet serviced by a
does not start				qualified technician.
or restart	2.	Power cord not plugged in	2.	Check that cord is plugged in securely.
		properly.
	3.	Thermal overload switch	3.	Turn off Tool. Turn off Compressor and wait for it to cool
		tripped.		down. Turn the Compressor on. Resume operation.
	4.	Building power supply circuit	4.	Reset circuit or replace fuse. Check for low voltage
		tripped or blown fuse.		conditions. It may be necessary to disconnect other
				electrical appliances from the circuit or move the
				compressor to its own circuit.
	5.	Tank is already pressurized.	5.	No problem. Compressor will start when needed.
	6.	Cord wire size is too small or	6.	Use larger gauge (thicker wire) and shorter extension
		cord is too long to properly		cord or eliminate extension cord. See Recommended
		power compressor.		Wire Gauge for Extension Cords in Safety section.
	7.	Compressor needs service.	7.	Have unit inspected by a qualified technician.
Compressor not	1. Compressor not large		1.	Check if accessory SCFM is met by Compressor. If
building enough		enough for job.		Compressor cannot supply enough air flow (SCFM),
air pressure				you need a larger Compressor.
	2.	Loose fittings.	2.	Reduce air pressure, then check all fittings with a soap
				solution for air leaks and tighten as needed. Do not
				overtighten.
	3.	Hose or hose connections	3.	Replace with larger hose and/or hose connections.
		not adequate.
	4.	High altitude reducing air	4.	You may need a larger compressor if you are
		output.		situated in a high altitude location.
	5.	Check Valve (105) needs	5.	Have unit inspected by a qualified technician.
		service.
Overheating	1. Unusually dusty		1.	Move unit to cleaner environment.
		environment.
	2.	Cord is too small of a	2.	Use larger gauge (thicker wire) and shorter extension
		gauge or too long to handle		cord, or eliminate extension cord. See Recommended
		compressor.		Wire Gauge for Extension Cords in Safety section.
	3.	Unit not on level surface.	3.	Reposition unit on a level surface.
	4.	Compressor not large	4.	Compressor is designed to cycle on and off. Continuous
		enough for job.		running will cause damage to compressor and indicates
				compressor is too small for the application. Check if
				accessory SCFM is met by Compressor. If Compressor
				doesn’t reach accessory SCFM, you need a larger
				Compressor.

Follow all safety precautions whenever diagnosing or servicing the compressor. Disconnect power supply before service.

Page 12	For technical questions, please call 1-800-444-3353.	SKU 67696
		68149