Table 8-1 Fault and Warning Messages
Error Message Cause
Action
ERR!
Little or no temperature rise has been
detected in that zone.
When the console starts to apply power it
expects to see an equivalent heat rise at
the thermocouple.
If the thermocouple has been trapped
and pinched in the tool or cable then the
console cannot see the full heat rise that
occurs at the tip. If left uncorrected there
is a danger that the zone could overheat
and damage the tip.
The circuit maintains the output at
whatever level it reached when the
monitor circuit detected the fault.
• Check thermocouple wiring, as it may be
reversed.
• Heater wiring may be faulty or element
may be open circuit.
FUSE
The output fuse for that zone has failed.
IMPORTANT: Read hazard warnings at
the start of Section 8.
IMPORTANT
: A fuse can only fail due to
a fault external to the controller. Identify
and rectify the fault before replacing the
fuse.
Note:
If the fuse in question is mounted
on a control card then it is safe to unplug
the board in order to isolate the circuit
and replace the fuse on the card.
• Replace the fuse with one of the same
rating and type [High Rupture Current
load fuse].
NOTE:
The blown fuse is located on the
control card.
GND
The system has detected an earth fault.
• Check the heater wiring for a low
impedance path to earth.
LINE
No mains supply synchronization pulses
being received.
The three-phase supply is used in a
crossover detection circuit to generate
timing pulses for accurate phase control
and firing the triac.
If the phase detection fails on one or two
phases then there is no pulse to use to
measure phase angle and the LINE error
message is generated.
All circuits on the healthy phases will
continue to work normally.
• There is a phase detection circuit
on each card and a common phase
detection circuit on all other controller
types.
• Although a fault in such circuits may
cause the
LINE
error message, such
fault is very rarely seen.
• The most common error is either the
absence of one phase or, if a plug has
been rewired incorrectly, a swapped
phase and neutral.
• If a
LINE
error message occurs then
switch off and isolate the controller and
check supply wiring for presence of all
three phases.
REV
The card has detected an abnormal
input at the thermocouple termination
that indicates a shorted or reversed
thermocouple.
• If the
REV
alarm persists, switch off the
controller and investigate the zone.
•
The offending zone can also be slaved
to a good zone until the fault can be
cleared.
8-2
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TROUBLESHOOTING
Me6 & Me12 Controller User Manual
