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Code Possible Cause Possible Solution
1 Clogged or dirty inlet and or discharge line filter. Clean or replace.
2 Lubricant viscosity too low Drain existing lubricant and refill with D
EWALT Synthetic
lubricant.
3 Lubricant viscosity too high Drain existing lubricant and refill with D
EWALT Synthetic
lubricant.
4 Lubricant level too low Add lubricant to crankcase to proper level. Check for bearing
damage.
5 Detergent type lubricant being used Drain existing lubricant and refill with D
EWALT Synthetic
lubricant.
6 Extremely light duty cycles. Run unit for longer duty cycles
7 Compressor check valve leaky, broken, carbonized or Clean or replace as required. Inspect valves.
loose.
8 Carbon build up on top of piston Clean piston. Repair or replace as required.
9 Piston rings damaged or worn (broken, rough, or scratched). Install new rings.
Excessive end gap or side clearance. Piston rings not
seated, are stuck in grooves or end gaps not staggered.
10 Cylinder or piston scratched, worn, or scored. Repair or replace as required.
11 Connecting rod, piston pin, or crankpin bearings worn or scored Inspect all. Repair or replace as required.
12 Crankshaft seal worn or crankshaft scored Replace seal or crankshaft assembly.
13 Extremely dusty atmosphere Install more effective filtration or relocate unit.
14 Ambient temperature too low Relocate unit to warmer environment. Ensure D
EWALT synthetic
oil is in crankcase.
15 Worn cylinder finish Degalze cylinder with 180 grit flex-hone.
16 Power cord not plugged in Plug cord into grounded outlet.
17 Motor thermal overload switch has tripped. Turn air compressor off, wait until motor is cool, then press motor
thermal overload button firmly until click is heard (located on
motor).
18 Fuse blown or circuit has tripped. Replace fuse or reset circuit breaker. Check for proper fuse; only
“Fusetron” type T fuses are acceptable. Check for low voltage
conditions. Disconnect any other electrical appliances from
circuit or operate air compressor on its own branch circuit.
19 Wrong gauge wire or length of extension cord. Check chart on page # 3 for proper gauge wire and cord length. If
possible, eliminate extension cord.