ELTS2 controller stuck in Emergency

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Symptoms/Issue

ELTS2 system is not switching back to normal from emergency

Description/Explanation of Issue

There are several reasons why a controller will not switch out of emergency:

Phase voltage problems
Fire alarm wiring issue
Local control (key switch) wiring issue
Remote station wiring issue
Hardware failure

Wiring, remote stations, fire alarms, or phase voltages are the most common cause of a controller being stuck in Emergency.

A controller may also not appear to switch out of emergency due to delay settings. DIP switches on the controller determine the Normal-to-Emergency switching delay, along with the Emergency-to-Normal switching delay. Delay times range from 170 milliseconds to 60 seconds. Common switching delay for E->N is 30 seconds

For troubleshooting purposes, CR6 is the heartbeat LED of the PIC processor and will blink