How can I test the snow sensor?

The APS-3C and APS-4C controllers utilize the CIT-1 aerial snow sensor, the GIT-1 gutter snow sensor and the SIT-6E pavement snow sensor to detect weather conditions. All three of the sensors work in the same way, they require a temperature below 38 °F (3.33 °C) and...

The controller is oscillating – How do I fix this?

Install a 100K Ohm resistor in-line with the Equipment Ground terminal (19). Disconnect Equipment Ground terminal (18). Grounding The EUR–5A sensor circuits and the EMC inputs are referenced to a common circuit ground. In most situations, this part of the system can...

What are the BEMC connections for?

BEMC stands for Building Energy Management Computer, which can be used to remotely monitor and control the EUR-5A controller. These connections are made to pins 10 through 16. The following diagram will aid in making these connections. See page 9 of EUR-5A manual....