BrainBee multigas 8500, Service Manual, Page: 76 / 78

ENGLISH 76 / 78 CAP. 17 - DIAGNOSTICS
MULTIGAS 8500
Alarm messages are coded Axxx in the window title bar.
Alarms immediately terminate the procedure and prevent its resumption.
CODE MESSAGE When it can
occur
Possible causes Actions
A000 EEPROM NOT
WORKING
In case of
faults in the
Eeprom
memory
Eeprom
damaged
Change the logic electronic
board
A001 EEPROM DATA
CORRUPT
In case of
faults in the
Eeprom
memory
Eeprom
damaged
Change the logic electronic
board
A002 PRESSURE SAFETY
SWITCH
ACTIVATED
High
pressure is
over 18 bar
High pressure
(due to pressure
on vessel or
circuit to vessel
closed) on
refrigerant circuit
between
equipment’s
compressor and
internal vessel.
Verify
If internal vessel
pressure level is
over 18 bar, wait
for pressure
reduction
disconnect
equipment from the
mains, use safety
protection, open
equipment and
make sure the
valves between
compressor and
internal vessel are
open
A003 ADC NOT
WORKING
After turning
on the
equipment
ADC fault Replacement of logic
electronic board.
A004 FAN NOT
WORKING
Only during
R-1234yf
use
Fan not working
properly (stopped
or fan’s rpm not
adequate)
Stop use of the equipment
1. check fan
connections and
2. if necessary,
change fan and
related cables with
a new one
3. change logic
electronic board
with new one.
A032 CIRCUIT STILL
UNDER PRESSURE
During
vacuum,
vessel filling
or leak test
phase in
vacuum
The vehicle A/C
system is
pressurized
Recover the refrigerant gas
from the vehicle before
starting another vacuum
phase.