ETI | Waveguide Dehydrators, De-icing & Heat Trace System

Can I simulate a sensor call for heat?

by ETI Staff | Jul 26, 2017 | APS-C Series FAQs

Yes, you can simulate a sensor call for heat to test the system by putting a jumper between pins 1 and 2 of the class two terminal blocks, the system will respond as if the sensor were seeing snow conditions. The snow and heat indicators will come on and relay or...

Snow sensor not detecting snow outside?

by ETI Staff | Jul 26, 2017 | APS-C Series FAQs, Snow & Ice Sensors FAQs

There can be several reasons for this. First, start by checking the snow sensor supply voltage between pins 2 and 3 of the class two terminal blocks. It should be close to 24 VDC (the label on some unit incorrectly say 24VAC). If there is no voltage then check the...

Why do I have a red GFEP light on?

by ETI Staff | Jul 26, 2017 | APS-C Series FAQs

The GFEP indicator will come on when a ground fault occurs in one of the heater circuits. The insulating resistance of the heater cable is breaking down or the cable has been damaged allowing current to pass to ground thru an incorrect pathway. Left un-repaired the...

How do I connect my SC-40C to my APS-4C?

by ETI Staff | Jul 26, 2017 | APS-C Series FAQs

APS-4C to SC-40C connections are done on the Class 2 terminal blocks on both units as follows. APS-4C Pin SC-40C Pin Next SC-40C Pin 4———————4————————–4...

Why is the GFEP light flashing on my APS-4C?

by ETI Staff | Jul 26, 2017 | APS-C Series FAQs

This indicates that there is a ground fault on one of the attached SC-40C satellite controllers. The SC-40C that has the ground fault will have a solid red GFEP light and will not allow the heaters to be powered. Isolating the heater leg that has the ground fault is...

What is the EMC light for?

by ETI Staff | Jul 26, 2017 | APS-C Series FAQs

EMC stands for Energy Management Computer, which can be used to remotely monitor and control the APS-C series ice melt controllers. These connections are made to the Class 2 connection terminal block on pins 14 through 22. The following diagram will aid in making...

High Temperature Limit dial not turning unit on?

by ETI Staff | Jul 26, 2017 | APS-C Series FAQs

Why doesn’t adjusting the High Temperature Limit dial turn the unit on? The High Temperature limit dial is used to set the maximum temperature that the unit will work at. When the High Temperature limit sensor detects a temperature higher than what is selected on the...

Why is my heater light flashing?

by ETI Staff | Jul 26, 2017 | EUR-5A FAQs

A flashing supply light on any APS or EUR-5A control indicates a missing or broken High Temperature Limit sensor. This sensor is required to make the EUR-5A controller to work. The sensor is not polarized and must be connected to pins 1 and 2. Refer to figure 9 in the...

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

by ETI Staff | Jul 26, 2017 | SST-2 Heat Trace FAQs

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. You can reduce this problem by...

Where do I connect the sensor wires to?

by ETI Staff | Jul 26, 2017 | SST-2 Heat Trace FAQs

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. Click here to view the SST-2 manual A representative diagram of a temperature sensor for...

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