Pressure Control
308870G 21
Control Board Diagnostics
1. Remove five screws (307) and cover (322) (FIG. 22).
2. Start sprayer.
3. Turn ON/OFF switch ON.
4. Observe LED operation and reference following
table:
LED Blinks Sprayer Operation Indicates What to do
Two times
repeatedly
Sprayer shuts down and LED
continues to blink two times
repeatedly
Run away pressure.
Pressure greater than
4500 psi (310 bar, 31
MPa)
1. Check pressure transducer con-
nection at control board.
2. Replace pressure transducer.
3. Replace control board.
Three times
repeatedly
Sprayer shuts down and LED
continues to blink three times
repeatedly
Pressure transducer is
faulty or missing
1. Check pressure transducer con-
nection at control board.
2. Replace pressure transducer.
3. Replace control board.
Four times
repeatedly
Sprayer shuts down and LED
continues to blink four times
repeatedly
Generator voltage is
low
1. Increase engine throttle.
2. Check wiring connections.
3. Service Honda engine alternator.
Five times
repeatedly
Sprayer shuts down and LED
continues to blink five times
repeatedly
High clutch current
1. Check clutch 5-pin bulkhead con-
nector. Clean contacts.
2. Measure 1.7 +0.2
across
clutch field at 70°F (21°C).
3. Replace clutch field assembly.
Six times
repeatedly
Sprayer shuts down and LED
continues to blink six times
repeatedly
High clutch tempera-
ture
1. If clutch is new, let sprayer cool
down and then restart
2. Inspect clutch. Replace clutch if
there is excessive wear.
3. Remove pump pin, separate pin-
ion housing from clutch housing.
Rotate rotor clockwise to check
for excessive drag.
To Next Page
Loading...
