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Installation Instruction
7
Troubleshooting
Problem
Trace heater remains cold No power supply
Automatic circuit breaker
disengages
Ground fault protection
is disengaged
088L1457 & AN296061216351en-US0102
End-termination - Heat shrink technology connection system
Possible cause
Trace heater or cold lead cable not
properly connected
Control unit adjusted incorrectly
Automatic circuit breaker
defective
Automatic circuit breaker has
wrong tripping characteristics, e.
g. "B" instead of "C"
Nominal circuit breaker size is
insufficient
Maximum heating circuit length
has been exceeded
End seal has not been installed
Short circuit
Humidity inside the connection
system or end seal
Trace heater damaged
Moisture in the junction box
Maximum monitoring length of
the ground fault protection has
been exceeded
Ground fault protection defective
Remedy
Check the supply line
Connect the trace heater and
cold lead cable according to the
installation instructions
Adjust the control unit according
to the installation instructions
Replace the automatic circuit
breaker
Install an automatic circuit
breaker with Type C tripping
characteristics
Install an automatic circuit breaker
with higher capacity (Refer to trace
heater manual, section "Maximum
heating circuit length")
Split the heating circuit into
separate circuits
Install the end seal according to
the installation instructions
Identify the cause and remedy the
fault (e. g. ensure that tape tails
are not twisted)
Replace the connection system /
end seal
Replace the trace heater at the
point where it is damaged
Dry the junction box
Be sure that the conduit drain is
installed and breathing properly.
Install additional ground fault
protection devices
Replace the ground fault
protection device(s)
© Danfoss | 2021.11 | 10
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