Storch Airless ST 850 Handbuch Seite 175

Sprayer will not run
Remove control box cover. Turn spra-
yer ON. Observe control board status
light on control board
No Light
Once Normal operation
Light on Control board comman-
continuous- ding motor to run
ly
Flashing See code section for
further troubleshooting
See step 3. Is there continuity through
the thermal switch wires?
See step 4. Does the motor run?
Replace the potentiometer.
See step 1.
Do you have
over 220 V
AC for 230 V
units)?
YES
YES
YES
175
See step 2.
Do you have
over 220 V
NO
AC for 230 V
units)?
YES
Replace
the On/Off
switch.
If motor is hot, let cool and retest. If step 3
still shows no continuity, replace motor. The
NO
motor has a defective thermal device.
Connect a test trans-
ducer to the board.
NO
Does the motor run?
YES
Replace the the
transducer
Repair or
replace
power cord
NO
NO
Replace the con-
trol board.
Original instruction