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...
by ETI Staff | Jul 26, 2017 | APS-C Series FAQs
The snow light stays on longer for the SC-40C than the APS-4C because 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...
by ETI Staff | Jul 26, 2017 | APS-C Series FAQs
No, the SC-40C does not use a snow sensor, it is completely controlled by the attached APS-4C. However, the SC-40C does require the High-Temperature sensor Thermistor to be connected (or bypassed with a 470K-ohm resistor) in order for the unit to operate. The SC-40C...
