22
Troubleshooting
List of errors, functions monitored and relevant error messages displayed, cont.
Error/Function
Error message displayed
15 ERROR. EMERGENCY STOP
The emergency stop button has been pressed.
EMERGENCY STOP
16 ERROR. WEIGHT FROM SCALE
Over-/Under-load of scale or weight above limit for maximum allowed
WEIGHT FROM SCALE
weight at wash module start.
17 ERROR. DOOR LOCK SWITCH
Even though the door lock microswitch indicates that the door is locked,
the signal from the microswitch which is used to detect when the door is
closed is absent.
DOOR LOCK
18 ERROR. START NOT ALLOWED
Network does not allow programme start.
START NOT ALLOWED
19 ERROR. MIS COMMUNICATION
Machine has lost contact with network.
MIS COMMUNICATION
20 ERROR. INTERLOCK
Fault in MCU receiving circuitry for lock acknowledgement signal.
INTERLOCK
The test of the MCU-interlock circuits proceeds in the following way:
Before the locking of the door lock a speed command is sent from the
timer to the MCU (=0 Hz). Then the timer checks that the value of the
apparent current (ru 15) and output (ru 20) is below the value 5, which is
a condition for locking the door. When the door is locked the timer again
command running at 0 Hz and this time the apparent current and the output
voltage shall have a value above 5.
21 ERROR. I/O COMMUNICATION
Communication between the CPU board and one of the I/O boards
interrupted or disturbed.
I/O COMMUNICATION
22 ERROR. LOW OIL LEVEL
In machines with an oil lubrication system, indicates low level in the oil
container.
LOW OIL LEVEL
23 ERROR. LOW OR HIGH VOLTAGE
Incorrect input voltage to external equipment.
PHASE
24 ERROR. PRESSURE SENSORS, TILT
Both pressure sensors are active at the same time.
PRESSURE SENSOR TILT
25 ERROR. PRESSURE SENSOR TIMEOUT
No pressure at the relevant pressure sensor within the maximum time
allowed for tilt backwards or forwards.
PRESSURE SENSOR TIMEOUT
26 ERROR. DOOR SWITCH, TILT
Door closed (S) is "on" at a time when the machine door is locked
open (S25).)
DOOR SWITCH, TILT
27 ERROR. LEVEL OFFSET
The pressure sensor for the water level signals a value that is so different AUT. LEVEL CALIB.
from the empty machine state that the automatic level calibration cannot
adjust the level system.
28 ERROR. LEVEL NOT CALIBRATED
Calibration of level system not done in service mode before
use of machine.
Summary of Contents for W4400H
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