Code
Possible Cause
Detergent type oil
17
being used in pump.
18
Very light duty cycles.
Piston rings damaged
19
or worn.
Cylinder or piston
20
damaged or worn.
Air compressor
21
cylinder finish worn.
22
Water in pump oil.
Low voltage/motor
23
overload.
Possible Solution
Drain oil and refill pump with
full synthetic non-detergent
air compressor oil.
Run longer duty cycles.
Contact a D
WALT factory
E
service center or a D
WALT
E
authorized service center.
Contact a D
WALT factory
E
service center or a D
WALT
E
authorized service center.
Contact a D
WALT factory
E
service center or a D
WALT
E
authorized service center.
Drain oil and refill pump with
full synthetic non-detergent
air compressor oil.
Check that power supply
is adequate and that air
compressor is on a dedicated
circuit. If air compressor
is connected to a circuit
protected by a fuse, use time
delay fuses.
Code
Possible Cause
Restricted air
24
passages.
25
Low voltage motor.
26
Bad check valve.
27
Seized pump.
28
Oil level too high.
29
Poor ventilation.
30
Dirty cooling surfaces.
Too much back
31
pressure in tank.
Air compressor too
32
cold.
29
Possible Solution
Inspect and replace transfer
tubes or check valve, as
required.
Furnish adequate power.
Replace check valve.
Contact a D
WALT factory
E
service center or a D
WALT
E
authorized service center.
Reduce to proper level. See
Air Compressor Pump Oil
under Maintenance, page 21.
Relocate air compressor to
an area with cool, dry, well
circulated air, at least 12 in.
from nearest wall.
Clean all cooling surfaces.
Open drain valve when
starting motor.
Move air compressor to a
warmer location.