Table 9-1 Fault and Warning Messages
Error Message Cause Action
AUTO The controller has detected a T/C
failure and automatically switched
this zone to manual.
It is using recorded settings to
maintain the zone temperature.
Check from the tool back to the
controller for a disconnected
thermocouple.
(Note: this will only be seen if you have selected Auto/Manual Mode
Enable)
ERR! No temperature rise has been
detected in that zone.
Check thermocouple wiring, it may be
reversed.
Heater wiring may be faulty or
element may be open circuit.
FUSE The fuse for that zone has failed.
Note: a fuse can only fail due to
a fault external to the controller.
Identify and rectify the fault before
replacing the fuse.
Replace the fuse with one of the
same rating and type, i.e. High
Rupture Current load fuse.
The blown fuse is located either on
the control card or on the o-board
triac module (If tted).
GND The system has detected an earth
fault.
Check your heater wiring for a low
impedance path to earth.
HELP There is a system failure Please contact Mold-Masters
Systems.
HIGH The water-ow sensor has detected
a high ow rate.
Check that the coolant water system
is not blocked or leaking.
LOW The water-ow sensor has detected
a low ow rate.
LINE No mains supply synchronisation
pulses being received.
Check supply wiring for presence of
all three phases.
LOAD No load on that zone. Only occurs
when in manual closed loop mode
where the current is pre-set. The
current sensing circuit has not
detected a current ow; therefore,
the zone is agged as not having a
load.
Isolate the system supply and
check the connections between the
controller and the tool heaters.
Also, check the heater for continuity.
OVER The RTD zone has detected a
temperature in excess of 99°C.
Check the wiring to see that there is
no fault.
Check that a dierent RTD has not
been tted.
N/Z The controller card in this rack
position is not responding.
Check card for faults.
NONE A Zone type appears not to be
selected for the card.
There is a communications problem.
Try a replacement controller card.
9.6.1 Fault and Warning Messages
Any of the messages from Table 9-1 or Table 9-2 may be displayed on the
Fault Indication line.
9-3
© 2020 Mold-Masters (2007) Limited. All Rights Reserved.
TROUBLESHOOTING
E-Multi Controller User Manual
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