(2) If an Optical unit (Ei146RC/166RC) beeps without
the red light flashing at the same time, the chamber is
defective. Clean the chamber.
4. INTERCONNECTED ALARMS DO NOT ALL
SOUND:
(1) Hold test button for 10 seconds after first alarm has
sounded to ensure signal is transmitted to all units.
(2) One or more of the connections may not be correctly
connected. We recommend you consult a qualified
electrician.
13