Ei Electronics Ei650i - Page 36

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12.2.3. Faulty smoke chamber
In the unlikely event of the smoke sensing chamber becoming defective, the
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Alarm must then be replaced.
If it is not convenient to replace it immediately, pressing the test button will
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repeated as required.
12.3. Diagnostic Modes
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very useful diagnostic modes to investigate if there have been previous alarm
conditions, identify a Alarm with a fault condition and predict fault conditions
that are likely to manifest themselves before the next annual service.
12.3.1. Predictive failures
Pressing and holding the test button will indicate if there is likely to be a low
battery or contaminated chamber fault before the next annual visit. The yellow
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potential low battery fault. In the case of a potential contaminated chamber
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not sound then the Alarm has reached its end of life - this can be verified by
checking the date code label also.
To avoid a call out before the next annual service we recommended the Alarm
be replaced.