
CS106/BL106 Combined Door Entry and Coded Access
41
Troubleshooting
Use the table below to determine the most probable cause of a fault condition.
Refer also to page 28 for problems with the coded access system (C106
Keypad).
Telephone Problems
Low Speech Volume
Volume adjustment required on
speech unit.
Speech unit is not tight against the
panel grill.
Panel grill is blocked
More than one telephone is off the
hook.
Speech unit supply voltage is low.
Check 10V - 15V across ‘C’ and ‘H’.
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