The lights flash, go out and then start all over again.

The lights flash when the heater tape is cold and the unit is turned on for the first time. The heat tape draws higher initial or inrush current when it is cold and this sags the internal processors power supply causing it to reset.

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Where do I connect the sensor wires to?

The sensor wires are connected to the blue #18 awg wires in the low voltage section. The sensor is not polarized so it does not matter which sensor wire goes to which blue wire.

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I have power to the unit and the lights come on but I do not get power to the heaters. (Units sold before 2015)

by Joe Hektor | Jul 26, 2017 |

connected, Controller, heaters, red, SST-2, SST-2 Heat Trace FAQs, White, wire

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When wiring the SST-2 the white and red wires of the controller must be wired together for the unit to have power. This is regardless of the voltage applied to the unit. The white wire powers the controller and the red wire goes to the contact of...

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Can I shorten or extend the sensor wire?

by Joe Hektor | Jul 26, 2017 |

12 awg, #18 awg, extend, sensor, Sensor wire, SST-2 Heat Trace FAQs, wire

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Yes, the length of the sensor wire can be shortened or extended as long as:

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Can I run the heater cable into the APS housing?

This depends on what you are calling heater cable. Most heat cable has two segments the heat tape and the cold wire. These are usually spliced together in either a high-temperature box or as an in line splice.

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Can I simulate a sensor call for heat to test the system?

by David Mays | Jul 21, 2017 |

contactor, EUR-5A FAQs, heat, Jumper, LED, sensor, terminals, wire

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Yes, to test the system by simulating a sensor call for heat, connect a short jumper wire between terminal block terminals 25 (sensor signal) and 24 (sensor ground). Now the Heat LED should turn on within 10 seconds and the control relay should...

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Troubleshooting the SIT-6E Snow Sensor

Environmental Technology Inc. demands the most and the best out of the products it manufactures and distributes. In a less than perfect world, however, less than ideal situations occur.

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Temperature Sensor Placement?

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Can I extend the sensor wire and how far away can I locate the sensors?

by David Mays | Aug 04, 2011 |

CIT-1, Frequently Asked Questions, GIT-1, SIT-6E, wire

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Yes. The sensor wire can be extended up to 500 feet with #18 awg wire and 2000 feet with #12 awg wire.

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