by ETI Staff | Jul 26, 2017 | APS-C Series FAQs
The difference is the step down transformer that provides the power for the internal circuitry. On the 277 single phase the transformer is 277 VAC to 24 VAC and you will note that its primary winding is connected to the top and middle poles on the contactor. On the...
by ETI Staff | Jul 26, 2017 | APS-C Series FAQs
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 only, is not recommended since it will reduce...
by ETI Staff | Jul 26, 2017 | APS-C Series FAQs
No, using external contactors will cause the GFEP circuit on the APS-4C to detect the inductive load of the contactors coil as ground fault and alarm the system every time the contactor is turned on. In order to increase the size of the application, a SC-40C satellite...
by ETI Staff | Jul 26, 2017 | APS-C Series FAQs
A flashing supply light indicates a missing or broken High-Temperature Limit sensor. This sensor is required to make the APS-C series controller to work. It is required on all of the APS-C series controllers. The sensor is not polarized and must be connected to pins...
by ETI Staff | Jul 26, 2017 | APS-C Series FAQs
Why is there a delay between when the APS-4C turns on and when the SC-40C comes on? 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...
