EN-TraceTekTT1100OHP-IM-H58263 01/15
PN P000000886
THERMAL BUILDING &
INDUSTRIAL HEAT TRACING SOLUTIONS
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symptom
possible cause and correction
Green LED not visible on TraceTek
instrument
System is not powered. Check power wiring. Check circuit breakers that may have been
tripped. On TTDM-128 check fuse and replace if necessary.
Leak alarm
(TTDM-128 message and red LED)
(SIM Red LED ON)
This is an indication of a LEAK event.
For leak locating modules (TTDM-128 and TTSIM-2): Using leak distance indication and System
Map as a guide, investigate system condition, work to locate and repair leak.
For non-locating modules: Work to locate and repair the leak. (If your system is constructed
with multiple sensor cable segments, using an end termination (TT-MET-PC) to break the sys-
tem into sections can help in locating the leak. Work outward from the alarm module using the
end termination to establish a temporary end of the circuit, then sequentially move outward
adding one cable segment at a time).
Once the leak is repaired, remove excess water from sensing cable and synthetic fiber jacket.
Typically this will clear the Leak Alarm or LEAK condition (Red LED on SIM).
In order to clear the Service Req’d (or Service condition), moisture levels on sensor cable and
synthetic fiber jacket need to be reduced with further drying.
note: When the service req’d or serVice condition exists (Yellow leD), leak location ac-
curacy is reduced for a new leak.
Yellow LED visible on TTC-1, TTSIM-1A,
TTSIM-2 or flashing yellow LED on
TTSIM-1
Could be cable break or service indication. Refer to alarm module instructions for more infor-
mation.
For Cable break indication:
Check for loose connectors, missing end terminations, broken jumper wires or physical dam-
age to the cable. Repair or replace cable if necessary. The TT-MET-PC end termination can
be used to isolate a damaged section by working outward from the instrument using the end
termination to establish a temporary end of the circuit then sequentially moving outward add-
ing one cable segment at a time.
“SERVICE Req'd” message
(TTDM-128 Only)
This is an early warning message from the TTDM-128 panel indicating that the cable is becoming
damp, but not yet to the level that constitutes a leak. The TTDM-128 panel may display a location
in square brackets. If a location is displayed, that location should be investigated for possible
sources of condensation/drips. The square brackets indicated that the leak signal is not strong
enough for an accurate location calculation, so the indicated locations may include some error.
Red LED fails to turn off after leak is re-
paired, and leak alarm reset attempted
Cable and over-braid are still damp. Allow more time for cable to dry or investigate leak site to
make sure that water is not pooling under or behind the sensor cable.
Leak location seems inaccurate in
actual leak situation
More that one leak may be present or the cable may be damp in several locations. If the sys-
tem is monitored by a TTDM-128, check the event history to see if there is an earlier indica-
tion of a nearby leak or a SERVICE NEEDED message. If necessary use the end termination
to break the system into smaller segments and work outward to isolate each leak location in
multiple leak scenarios.
Leak locations seem inaccurate or
unstable during mapping tests
Make sure that the simulated leak (MAPPING CAP) is kept in place for at least 30 seconds. The
location circuitry in the instruments require a steady leak location in order to compute an accurate
distance. Removing the simulated leak too quickly induces a random error.
troubleshooting
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