SC-40C

Why doesn’t adjusting the High Temperature Limit dial turn the unit on?

by ETI Staff | Aug 2, 2011 | Frequently Asked Questions

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 dial it overrides the system and shuts it off. This function can be used...

Can I use the APS-4C to drive external contactors for more circuits?

by ETI Staff | Aug 2, 2011 | Frequently Asked Questions

No. Doing so will cause the GFEP circuit on the APS-4C to detect the inductive load of the contactor coil as ground fault and alarm the system every time the contactor is turned on. The APS-3C is designed without an internal GREP circuit so it will work with external...

Is there a way to make the system come on with temperature only?

by ETI Staff | Aug 2, 2011 | Frequently Asked Questions

The APS C series systems are designed to turn on and off, as the weather requires heat to deal with snow or icing conditions. Although a thermostatic dry contact switch can be used to override the system on for temperature alone, is not recommended since it will...

Why is there a delay between when the APS-4C turns on and when the SC-40C comes on?

by ETI Staff | Aug 2, 2011 | Frequently Asked Questions

This delay between the APS-4C and the SC-40C is programmed into the system in order to reduce surge current. When the heaters are turned on they will have a large inrush of current for a few seconds. If all the heater circuits came on at the same time the inrush...

Why does the snow light go off on the APS-4C but remain on for the SC-40C’s?

by ETI Staff | Aug 2, 2011 | Frequently Asked Questions

The snow light goes off on the APS-4Cbecause the APS-4C gets its command from an actual snow sensor where the SC-40C’s get their command from the APS-4C. When the snow sensor’s moisture grid dries out, it no longer sends a snow present command to the APS-4C so it’s...

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Next Entries »

Why doesn’t adjusting the High Temperature Limit dial turn the unit on?

Can I use the APS-4C to drive external contactors for more circuits?

Is there a way to make the system come on with temperature only?

Why is there a delay between when the APS-4C turns on and when the SC-40C comes on?

Why does the snow light go off on the APS-4C but remain on for the SC-40C’s?

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