E-100-L Installation Instructions
8
Troubleshooting Guide
Problem
Troubleshooting steps
Light is dim or off.
1. Check that light voltage rating matches supply voltage for heat-tracing circuit. Supply voltage lower or
higher than light rating will cause malfunctions.
2. Check that heat-tracing circuit is energized. Although the circuit breaker is on, control devices such as
thermostats may switch heating cable off.
3. Following electrical safety procedures, disconnect supply voltage, unscrew light from end seal base and
check that crimp connections to heating cable bus wires are tight and not crossed or shorted. Loose
connections or shorts will cause malfunctions.
4. With circuit off, attach volt meter leads to crimps. Energize circuit and measure voltage at light. Use the
following table to determine whether the voltage measured is within the acceptable range.
Catalog name
Nominal voltage
Acceptable voltage range
E-100-L1
100–120 Vac
58–132 Vac
E-100-L2
200–277 Vac
145–305 Vac
•
If voltage at light is in acceptable range and connections are good
, the light may be defective or
damaged. Replace light.
•
If there is no voltage at the light
, there may be breaks in the heating cable between the power
connection and the end seal. Check for splice or tee connections that may be left open.
•
If voltage at light is above specified limits
, the light may be off. Voltages above specified range can damage
light. Replace light with correct version for line supply voltage or adjust supply voltage accordingly.
•
If voltage at light is present but below specified limits
, the light may be dim or off. The following table
lists typical causes for low voltages and possible solutions.
Cause
Solution
Supply voltage at start of circuit is low (light is
designed to work with supply voltages within 10%
of nominal).
Increase power wire gauge size to reduce volt-
age drop between panel and heating cable power
connection.
Heating cable length is too long (light is designed
to work with published maximum circuit lengths).
Split heating cable into multiple circuits. Shorten
length of heating cable.
Heating cable is started under very cold conditions
(heating-cable voltage drop is very high for first
minutes of very cold start-up).
Wait for heating cable to warm up. Voltage at light
will increase.
Heating cable controller is reducing voltage (light
may not work with controllers that phase fire to
reduce line voltage).
Turn off phase firing function in heating cable
controller.
Problem
Troubleshooting steps
Cap cannot be tightened
completely.
1. Check that heating cable is installed and stripped correctly. The top of the insulated parallel crimps should
be 2 3/8 in (60 mm), or less, above the top of the plastic strain relief in the stand.
2. Check that core sealer is positioned properly. The end of the core sealer must be flush against the plastic
strain relief in the stand.
3. Check that the threads on the light and stand are clean. The connection wires between the heating cable
and the light should not be caught in stand threads.
©
2009
Tyco
Thermal
Controls
LLC
PN
863747-000
H55923
12/09
Worldwide Headquarters
Tyco Thermal Controls
307 Constitution Drive
Menlo Park, CA 94025-1164
USA
Tel (800) 545-6258
Fax (800) 527-5703
www.tycothermal.com
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