Thermon TraceNet TCM 18 User Manual
Page 73
Circuit Fault Alarm
The following summarizes some of the possible causes and solutions for heat trac-
ing circuit fault alarms.
Cause
Possible Solutions
Upon initial installation start-up, improper
wiring of the relay or low current in heater.
Confirm correct wiring and presence of
the heater. Where normal operating am-
perage is in range of 0 to 250mA, dis-
abling the Self-Test function or adding
multiple loops through the current sensing
toroid may be required.
During daily operations; possibly indicates
relay contact failure.
If relay has failed, replace.
Breaker off.
Turn on breaker after conferring with op-
erations manager.
High Current Readings/Alarms
The following summarizes some of the possible causes and solutions for heat trac-
ing high current readings or alarms.
Cause
Possible Solutions
Self regulating heater or power limiting
heater current may exceed set value dur-
ing normal operation or start-up opera-
tions.
Increase high current alarm set point
(if approved by project engineer).
For
startup
operation
current
alarm
nui-
sances, it may also be desirable to in-
crease the delay time (before a current
reading is done after turn on) set in the
controller.
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PN 50316_0514