Electro Industries EM-MC Series, Installation & Operating Manual

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07/29/2019 20 EI915
Operational Indicators
LED Monitor Lights
Green LED – is a representation of low voltage control power.

Green LED ON = good 24VAC power and fuse is in good working condition.

Green LED OFF = Fuse open or no 24VAC from transformer (or primary source breaker
open).
STATUS LED
Status LED (front yellow LED) – is software driven LED which alerts the user that a message is
available in the message center.
 Status LED OFF = No message is available
 Status LED Blinking = Message is available
o
To access available messages, the user must press and hold the “SELECT”
button for 3 seconds.
Possible messages:

Faulty sensor (OT and/or ST)
See Troubleshooting section for more information on viewing available messages.