MAHLE ACX380 Service Manual page 42

The responsibility for the effects on people, animals or property resulting from inspection and repair work is entirely attributable to The responsibility for the effects on people, animals or property resulting from inspection and repair work is entirely attri The responsibility for the effects on people, animals or property resulting from inspection and repair work is entirely attri
the technician who works on the equipment. The suggestions given on the following pages are only indicative and the
Alarm messages are coded Axxx in the window title bar. Alarms immediately terminate the procedure and prevent its Alarm messages are coded Axxx in the window title bar.
CODE MESSAGE
A000 EEPROM NOT WORKING
A001 EEPROM DATA CORRUPT
A002 PRESSURE SAFETY SWITCH
ACTIVATED
A003 ADC NOT WORKING
A004 FAN NOT WORKING
A006 EAXXXX not working
A009 SENSORS ERROR:
A032 CIRCUIT STILL UNDER
PRESSURE
A033 CIRCUIT LEAKAGE
A034 VACUUM LEVEL TOO LOW
A035 BOTTLE EMPTY
A036 BOTTLE REFRIGERANT
QUANTITY TOO LOW
A037 FURTHER REFRIGERANT
CHARGE NOT POSSIBLE
A038 CIRCUIT LEAKAGE OR
DISCONNECTED
Before approach the unit wear the personal protective systems Before approach the unit wear the personal protective systems
the equipment. The suggestions given on the following pages are only indicative and the the equipment. The suggestions given on the following pages are only indicative and the
manufacturer declines all responsibility for them. manufacturer declines all responsibility for them.
Alarms immediately terminate the procedure and prevent its resumption.
When it occurs When it occurs
In case of faults in the In case of faults in the
EEPROM memory EEPROM memory
In case of faults in the In case of faults in the
EEPROM memory EEPROM
High pressure is over 18 High pressure is over 18
bar bar
After turning on the After turning on the
equipment equipment
Only during R-1234yf Only during R
use use
Electronic board Electronic board
problems problems
Sensors not connected Sensors not connected
or in short circuit or in short circuit
During vacuum, bottle During vacuum,
filling or leak test phase filling or leak test phase
in vacuum in vacuum
During vacuum, bottle During vacuum,
recharge or leak test recharge or leak test
phase phase
During charging phase During
During the gas charging During the gas charging
and flushing phase and flushing phase
During the gas charging During the gas charging
and flushing phase and flushing phase
During gas charging During gas
phase phase
During flushing phase During flushing phase
| ACX380/480 ACX380/480 | 42
Possible situations Possible solutions Possible solutions
EEPROM damaged Change the logic electronic Change the logic electronic
board
EEPROM damaged Change the logic electronic Change the logic electronic
board
High pressure (due to Verify
pressure on bottle or If internal bottle pressure level If internal
circuit to bottle closed) is over 18 bar, wait for is over 18 bar, wait for
on refrigerant circuit pressure reduction pressure reduction
between equipment's disconnect equipment from the disconnect equipment from the
compressor and internal mains, use safety protection, mains, use safety protection,
bottle. open equipment and make open equipment and make
sure the valves between
compressor and internal bottle compressor and internal
are open
ADC fault Replacement of logic Replacement of logic
electronic board. electronic board.
Fan not working properly Stop use of the equipment Stop use of the equipment
(stopped or fan's rpm check fan connections and check fan connections and
not adequate) if necessary, change fan and if necessary, change fan and
related cables with a new one related cables with a new one
change logic electronic board change logic electronic board
with new one. with new one.
Faults on the electronics Updates the firmware Updates the firmware
components or
connections
Sensors disconnected or To check electrical To check electrical
damaged. connections or change with connections or change with
new spare part. new spare part.
The vehicle A/C system Recover the refrigerant gas Recover the refrigerant gas
is pressurized from the vehicle before starting from the vehicle before starting
another vacuum phase. another vacuum phase.
Leakage in the circuit or Identify the leak position in the Identify the leak position in the
in the vehicle fittings. vehicle or connected system vehicle or connected system
and have it repaired by trained and have it repaired by trained
and qualified staff according to and qualified staff according to
local legislation. local legislation.
Vehicle A/C system is Identify the leak position in the Identify the leak position in the
pressurized vehicle or connected system vehicle or connected system
notwithstanding the and have it repaired by trained and have it repaired by trained
vacuum phase and qualified staff according to and qualified staff according to
local legislation. local legislation.
Refrigerant gas is too Fill the internal tank Fill the internal tank
low for the procedure to
be completed
Gas amount in internal Fill the internal tank Fill the internal tank
tank less than required
Hoses not hooked up to Caution: before proceeding, Caution: before proceeding,
A/C system; tap closed; empty out the hoses. empty out the hoses.
vacuum not sufficient; Repeat the recovery procedure Repeat the recovery procedure
presence of pressure in and increase the vacuum and increase the
the circuit phase duration. phase duration.
Leakages or Check the connection to the Check the connection to the
obstructions in the A/C system or identify the leak A/C system or identify the leak
circuit to be flushed in the circuit and have it in the circuit and have it
repaired by trained and repaired by trained and
qualified staff according to
local legislation. local legislation.
en
re the valves between
ed staff according to