Simplex 4100+ - Head Missing

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1.1.3.1.2 Head Missing
Description:
The panel is seeing the base at the displayed address but is not seeing the head (Sensor).
Possible causes:
 Head is not installed.
 Head is not fully twisted onto the base
 Detector terminals on the base are loose
 Faulty Head
 Faulty Base
Suggested solutions:
NO
NO
YES
Replace Head
Adjust terminals to
make better contact
with head
Is base LED
flashing?
Replace Base