Control System 23Service Manual – SC3000
Function Electronic Board Alarm Codes
The function electronic board indicates a series of alarms in case of malfunction of one or more systems, and
in case of abnormal conditions detected in the input signals.
The alarms are shown on the display (except “F6”) by 2 signs following each other:
“AL” and “G2”, where G2 is one of the alarm codes (see the descriptions in the following tables).
P100549 P100550
Also, the alarms are repeated (in case of display malfunction) by the diagnostic LEDs (yellow and red) on the
electronic board, as described in the following tables.
A
P100401A
General alarms
Alarm on the function electronic board - YELLOW LED + RED LED FLASHING
Alarm
Code
on the
display
No. of
ashes
on the
board
Meaning Condition Effect
Troubleshooting action
G2 2 EEPROM error. EEPROM error. Function block
+ Default setting
reset.
If the machine is normally working after the G2 mes-
sage appearing, it could be caused by an electroma-
gnetic spike from the environment that didn’t damage
the system.
1. Check all the parameter (see page 32 - 33)
settings (battery type, parameters etc.) because
of they could be restored to default.
G3 3 General thermal
protection.
The heatsink of the board
reached a temperature
up to 194 °F (90 °C).
Function block.
1. Check the current ow in the drive motor (it has
to be 6-8amps without load and it has to remain
below 20 amps during operations).
2. Check the current ow in the vacuum motor (it
has to be less than 20 amps).
3. Verify the correct thermal dissipation of the board:
the correct installation on the metal bracket,
obstacles to the air ow from the bottom (deck
area) to the extraction hole on the top cover of the
electric box.
4. If all is ok, it could be generated by extreme
working conditions like room temperature >30°C,
slopes in the working path. The machine has
to be maintained off in order to restore the right
temperature into the board and then it could be
used.
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