Service and troubleshooting
Operating instructions (Version 0)
61
ST 1075
7
21
Potentiometer
short circuit or
loose.
The potentiometer's
slider is loose or
causing a short
circuit.
Check the potentiometer
wiring.
22
Main relay
driver.
Main relay defective
or wires have come
loose.
Check the wiring to the main
relay.
23
Motor relay
driver.
Motor relay defective
or wires have come
loose.
Check the wiring to the motor
relay.
24
Lowering valve
driver.
Solenoid coil
defective or wires
have come loose.
Check the wiring to the
lowering valve.
25
Correction
valve driver.
Solenoid coil
defective or wires
have come loose.
Check the wiring to the
correction valve.
26
Unlock magnet
driver
Solenoid coil
defective or wires
have come lose.
Check the wiring to the unlock
magnet.
29
Potentiometer
power supply.
The supply voltage
for the potentiometer
is too low/too high.
Cancel the fault by pressing
<SELECT> and <UNLOCK>
for 2 seconds. If the fault
occurs again, contact
technical services.
30
Motor relay
active.
The motor relay may
have stuck.
Replace the motor relay.
31
Motor relay not
active.
The motor relay does
not switch on,
despite receiving a
control voltage.
Replace the motor relay.
32
Main relay
active.
The main relay may
have stuck.
Replace the main relay.
33
Main relay not
active.
The main relay does
not switch on,
despite receiving a
control voltage.
Replace the main relay.
35
Internal main
relay active or
MS button
pressed.
The main relay on
the PCB has stuck or
the MS button has
been pressed.
Replace the PCB.
Table 7.3
Troubleshooting
Code
Screen text
Possible cause
Solution
Содержание ST1075-FBF
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