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TYPE OF PROBLEM
Building circuit breaker opens
CAUTION
Any short in any part of the
motor power circuit will cause
the control circuit to inhibit
sprayer operation. Correctly
diagnose and repair all shorts
before checking and replac-
ing control board.
Display reads all 8's
AutoClean problem
8
309255
Troubleshooting
WHAT TO CHECK
If check is OK, go to next check
1. Current limit exceeded
2. All electrical wiring for damaged insulation, and
all terminals for loose fit or damage. Also wires
between pressure control and motor. See page
20.
3. For missing inspection plate gasket (see page
20), bent terminals or other metal to metal con-
tact points which could cause a short.
4. Motor armature for shorts. Use an armature
tester (growler) or perform spin test. See page
9. Inspect windings for burns.
5. Motor control board (35) by performing motor
control board diagnostics on page 15. If diag-
nostics indicate, substitute with a good board.
CAUTION: Do not perform this check until mo-
tor armature is determined to be good. A bad
motor armature can burn out a good board.
Switches on back of display are set
incorrectly.
Manual 309278
WHAT TO DO
When check is not OK refer to this column
1. Switch to another circuit with less load. If
sprayer has a 15/20A or 10/12A switch,
change to lower value.
2. Repair or replace any damaged wiring or
terminals. Securely reconnect all wires.
3. Correct faulty conditions.
4. Replace motor. See page 20.
5. Replace with a new pressure control board
(35). See page 15.
Set the four switches psi, bar, MPa and
liters/gallons to proper settings for your
sprayer. Fig. 12, page 15.
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