Bosch ACS 751 Repair Instructions page 13

Error code Messages
A207 EXTENDED FLUSHING
Used Oil bottle Full
A208 SHORT FLUSHING
Refrigerant Cylinder Full
A209 SHORT FLUSHING
Recharge Failed. Check Hoses
A302 EXTENDED FLUSH-
ING Service Timeout
A303 EXTENDED FLUSHING
Insufficient R134a quantity
A304 EXTENDED FLUSHING
Leak Detected
A305 EXTENDED FLUSHING
High pressure shutdown
A306 EXTENDED FLUSHING
High pressure in vehi-
cle - Perform Recovery?
A307 EXTENDED FLUSHING
Used Oil bottle full
A308 EXTENDED FLUSHING
Refrigerant cylinder full
A309 EXTENDED FLUSHING
Recharge Failed. Check Hoses
A401 CALIBRATION
No weight detected
A601 REFRIGERANT TOP UP
Service Timeout
A602 REFRIGERANT TOP UP
Insufficient R134a Quantity
A701 CALIBRATION CHECK
Weight Not Placed
A702 CALIBRATION CHECK
Failed
A901 AIR PURGE
Service Timeout
A20A SHORT FLUSHING
Used Oil Bottle Not Found
A30A EXTENDED FLUSHING
Used Oil Bottle Not Found
C001 OIL RECHARGE
Service Timeout
C002 OIL RECHARGE
High pressure in vehi-
cle. Perform Recovery
Robert Bosch GmbH
Actions
Reduce quantity of used oil in the used oil bottle. Perform scale reset.
R Weight limit reached. Reduce quantity of refrig-
erant in internal refrigerant cylinder.
R Refrigerant cylinder scale is defective. Replace the scale.
Perform action as indicated
Check for blockage in ACS 751/651.
Fill R134a to the internal cylinder.
Check for leakage in the part under flushing.
Check for blockage in the ACS 651/751.
The pressure is greater than 1400 mbar while vacuum-
ing. Perform recovery and restart flushing.
R Empty the used oil bottle.
R Perform scale reset
R Check the used oil bottle scale.
R Weight limit reached. Reduce quantity of refrig-
erant in internal refrigerant cylinder.
R Refrigerant tank scale is defective. Replace the scale.
Perform action as indicated.
R Perform scale reset of the oil bottle load sensors.
R Calibrate all the load sensors.
R Check the electrical connection between all the load sensors and I/O board.
R Check if the vehicle A/C system is on.
R Check for blockage in the ACS 751/651.
R Check the refrigerant cylinder scale.
R Check for blockage in the hoses
Fill the internal refrigerant cylinder.
R Place a valid weight.
R Check for refrigerant scale.
R Perform calibration again.
R Check the temperature sensor.
R Check the solenoid valve on the air purge manifold.
R Check if the used oil bottle is disconnected. If the bot-
tle is disconnected, connect the bottle.
R Check the used oil bottle scale.
R Check if the used oil bottle is disconnected. If the bot-
tle is disconnected, connect the bottle.
R Check the used oil bottle scale
R Check the oil scale.
R Check for blockage on the oil charge solenoid path.
The pressure is greater than 1400 mbar while recharging.
Perform recovery
Troubleshooting | ACS 751/651 | 13 ACS 751/651 | 13
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| 13 en
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2013-10-21