Service Manual User Manual
11
5.5a Error Codes
Certain conditions create errors in the program operation. The purple ERROR light on
the front of the control panel along with the ERROR CODE light on the UPM will blink in
patterns to indicate the source of the error. The definitions for the patterns are as
follows:
Liquid Level Error
– This error appears when the upper liquid level sensor sends a
signal to the UPM (W-H light is illuminated) and the low liquid level sensor is not
sending a signal to the UPM (W-L is not illuminated). The low level sensor may not be
functioning due to a coating of debris or a broken/disconnected wire that is preventing
the signal to the UPM. A continuous signal from the upper level sensor can be caused
by debris coating the face of the sensor or faulty wiring that has the sensor connection
grounded to the wash tank when there is no fluid in the tank. The liquid level lights on
the UPM can be used to help determine the problem (see Section 6.0 UPM & Section
7.6 Liquid Level Sensor).
Temperature Sensor Error
– When the UPM receives a signal from the thermistor
(see Section 7.5 Thermistor) that is outside the range of the UPM programming, the
temperature sensor error will actuate.
Over Current Error
– If any of the high voltage components begin drawing excessive
current, the current sensor will send a signal to the UPM to start the Over Current Error
and deactivate the contactor which turns the power off to the machine (see Section 6.6
Contactor & Section 6.7 Load Sensor).
Over Temperature Error
– If the fluid temperature in the wash tank exceeds 135°F it
will activate this error message and stop the machine. This error code cannot be reset
until the fluid is drained below the low level sensor in the wash tank.
Current Sensor Error
– The UPM must receive a signal from the current sensor to
verify that it is connected and working. If it does not receive the signal, the UPM
program will stop the machine and give this error code (see Section 6.7 Load Sensor).
“
_
“
symbol
represents
a
“
long
”
flash
“
.
”
symbol
represents
a
“
shor
t
”
flash
3 long & 1 short _ _ _
.
= Liquid
L
ev
el
Error
3 long & 2 short _ _ _
. .
=
T
emperatur
e
Sensor Error
3 long & 3 short _ _ _
. . .
= Over-Current Error
3 long & 4 short _ _ _
. . . .
= Over Temperature Error
3 long & 5 short _ _ _
. . . . .
= Current Sensor
Error
3 long & 6 short _ _ _
. . . . . .
= Membrane
Error