Ryobi YG301PD - Manual (Page 14)

TROUBLESHOOTING
14 - English
PROBLEM CAUSE SOLUTION
Compressor will not run Loss of power or overheating
No electrical power
Blown shop/house fuse
Shop/house breaker open
Amperage overload open
Pressure switch bad
Tank is full of air
Check for proper use of extension
cord
Check to be sure unit is plugged in.
Replace shop/house blown fuse
Reset shop/house breaker, determining
why problem happened
Unit must be unplugged and allowed to
cool for 30 minutes to initiate reset.
Replace pressure switch
Compressor will turn on when tank
pressure drops to cut-in pressure
Motor hums but cannot run or runs
slowly Low voltage
Wrong gauge wire or length of extension
cord
Shorted or open motor winding
Defective check valve or unloader Check with voltmeter
Check for proper gauge wire and cord
length
Take compressor to service center
Take compressor to service center
Amperage overload protector cuts out
repeatedly Low voltage
Lack of proper ventilation/room
temperature too high
Wrong gauge wire or length of extension
cord
Check with voltmeter
Move compressor to well-ventilated
area. Unit must be unplugged and
allowed to cool for 30 minutes to initiate
reset.
Check for proper gauge wire and cord
length
Air tank pressure drops when compressor
shuts off Loose connections (fittings, tubing,
etc.)
Loose drain valve/Open drain valve
Check valve leaking Check all connections with soap and
water solution and tighten
Tighten drain valve/Close drain valve
Take compressor to service center
DANGER:
Do not disassemble check valve,
tank drain valves or safety relief valve
with air in tank — bleed tank
Excessive moisture in discharge air Excessive water in air tank
High humidity Drain tank
Move to area of less humidity; use air
line filter
Compressor runs continuously Defective pressure switch
Excessive air usage
Piston rings are worn
Take compressor to service center
Decrease air usage; compressor not
large enough for tool’s requirement
Replace piston rings; Call customer
service for assistance
Air output lower than normal Broken inlet valves
Connections leaking Take compressor to service center
Tighten connections