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Troubleshooting Chart (Continued)
Symptom Possible Cause(s) Corrective Action
4 . Tank leaks
5. Broken valves
6. Piston ring worn
1 . Excessive water in tank
2 . High humidity
1 . Defective pressure switch
2 . Defective safety valve
1. Excessive condensation in tank
2 . Loose connections at fittings, tubing,
e t c .
3 . Tank leaks
1 . Check valve stuck in an open position
2 . Unloader valve stuck in open position
4 . Check tank for leaks with soap and water solution. If
leak is detected, tank must be replaced with genuine
replacement part.
5 . Replace compressor valves as necessary.
6 . Replace piston and cylinder.
1 . Drain tank.
2 . Move to area of less humidity; use air line filter.
NOTE: Water condensation is not caused by
compressor malfunction.
1 . Replace switch.
2 . Replace safety valve with genuine replacement part.
1 . Drain more often.
2 . Check all connections with soap and water solution.
If a leak is detected, (1) tighten or (2) remove fitting
and apply pipe tape to threads and reassemble.
3 . Check tank for leaks with soap and water solution. If
leak is detected, tank must be replaced with genuine
replacement part.
Do not disassemble check valve
with air in tank; bleed tank
1 . Repair or replace check valve.
2 . Repair or replace unloader valve.
Do not disassemble check valve
with air in tank; bleed tank
Excessive moisture in
discharge air
Compressor runs
continuously and safety
valve opens as pressure
r i s e s
Excessive starting and
stopping (auto start)
Air leaking from
unloader valve on
pressure switch
w w w . c h p o w e r . c o m