OLED User Interface
117
Part 1128351_02
E 2020 Nordson Corporation
Heater Sub System Alarms (contd)
Alarm
Type
Short Description
Details
Troubleshooting Tips
Alert
RTD Shorted
RTD resistance is below the
short circuit threshold. If
condition continues for 2
minutes, a fault will occur.
Check for intermittent or
broken RTD connections.
Verify the resistance. It
should measure between
100 and 300 ohms.
.
Fault
RTD resistance reading is
below the short circuit time
threshold.
Fault
Manifold or Reservoir
Thermostat Open
Manifold or reservoir
Thermostat is activated
because of a high
temperature condition or
connection failure.
You must power cycle the
melter to clear this fault.
After system has cooled,
check the thermostat for
open circuit and replace if
necessary. Check for broken
or intermittent thermostat
connection/wiring. Make
sure manifold and reservoir
RTDs were not
interchanged.
Fault
Zone Runaway Temperature
Limit
A zone runaway temperature
condition exists.
Replace hose/applicator
cordset.
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