Product Manual

Troubleshooting
3A7656A 31
Sprayer does not run at all
AND
Control board status light blinks
6 times r
epeatedly
Motor is hot or there is a fault
in the motor
thermal device.
Allow sprayer to cool. If sprayer runs
when cool, correct cause of
overheating. Keep sprayer in cooler
location with good ventilation. Make
sure motor air intake is not blocked.
If sprayer still does not run, replace
motor.
NOTE: Motor must be cooled down
for t
he test.
1. Check thermal device
connector (
yellow wires)
at control board.
2. Disconnect thermal device
connector from control board
socket. Make sure contacts are
clean and secure. Measure
resistance of the thermal
device. If reading is not correct,
replace motor.
Check Motor Thermal Switch:
Unplug ther
mal wires. Set meter to
ohms. Meter should read 100k
ohms.
-
3. Reconnect thermal device
connector to control board
socket. Connect power, turn
sprayer ON and control knob 1/2
turn clockwise. If sprayer does
not run, replace control board.
Basic electrical problems Motor leads are securely
fastened a
nd properly mated
Replace loose terminals; crimp to
leads. Be sure terminal are firmly
connected.
Clean circuit board terminals.
Securely r
econnect leads.
Motor armature commutator
for
burn spots, gouges or
extreme roughness.
Remove motor and have motor shop
resurface commutator if possible.
Problem What to Check How to check