Operation
0850−1/A1
Winterthur Gas & Diesel Ltd.
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4.3 LED On / Off Codes
4.3.1 Red Fail LED and Two-digit LED Display
The red Fail LED shows a failure on the related FCM-20 and if the failure status is
active or inactive (see Fig. 1).
Type of Failure
Failure Effects Procedures
Active Flashes Flashes
Not active (failure
recovery)
Stays on Flashes
No failure Off None
4.3.2 Function
Failure IDs give data about failures (see paragraph 4.4).
Not all failure ID signals are transmitted to the alarm and monitoring system. The
failure IDs shown on the two-digit LED display are also shown on the flexView.
The Fail LED flashes at the same time as the two-digit LED display.
Failure IDs that are more than 99 are shown as a two-digit display e.g. Failure ID 125
is shown as (2.5) and Failure ID 213 is shown as (1.3.).
4.3.3 Failure
The Fail LED flashes three times before the first failure ID is shown.
Each failure ID is shown for 2.7 seconds, then there is a pause of 1.3 seconds before
the failure ID is shown again.
If there are no more failures, the Fail LED goes off.
Fail LED
Flashes for as long as the
failure occurs
Failure IDs shown on
two-digit LED display
4.3.4 Failure History
The fail LED is on for 2.4 seconds before the first failure ID is shown.
Each failure ID is shown for 2.7 seconds, then there is a pause of 1.3 seconds before
the the failure ID is shown again.
After the failure before is shown, there will be a pause of 20 seconds between two
failure IDs.
The failure history is shown for approximately 30 seconds during a 15 minute period.
If there is no more failure history, the Fail LED goes off.
Fail LED
Failure IDs shown on
two-digit LED display
Flashes every 30 seconds, or after
a failure is shown
2014
Failures and Defects of WECS Components
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