Grasso
Refri
eration Division
GRASSO SYSTEM CONTROL
01.2003/ 0 638660E_chapter7.doc Kap.7 - 5
Option 2: The “SE“ LED is alight and the “STOP“ LED flashes slowly (1Hz); the “RUN“ LED is off.
The application program is not running.
The compressor is switched off and the ‘alarm’ relay signals an alarm (relay has de-energised).
LED irrelevant
LED off
LED on
LED flashing slowly
LED flashing quickly
LED additional information
Option 3: The “SE“ LED is alight and the “STOP“ LED flashes slowly (1Hz); the “RUN“ LED is off.
The application program is not running.
The compressor is switched off and the ‘alarm’ relay signals an alarm (relay has de-energised).
LED irrelevant
LED off
LED on
LED flashing slowly
LED flashing quickly
LED additional information
The flashing “STOP“ LED signals that a general reset has been requested. The cause for the CPU “general reset“
request can only read from the diagnostics buffer using programming device; check any peripheral modules
used that have “SE“ LEDs. General reset means that the main memory in the CPU is deleted and the application
program is reloaded from the flash memory (EPROM). For the actions required to carry out the general reset
(MRES), see Item. 4.2.
No error message
No error message
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