1 689 975 257 2019-05-15| Robert Bosch GmbH
Troubleshooting | ACS 652 | 23 en
9. Troubleshooting
9.1 Service messages
Service message Actions
CHANGE OIL
Change vacuum pump oil
(see section 12.6.1)
REPLACE FILTER
Replace combo filter
(see section 12.5.1)
9.2 Fault messages
failure indication Actions
HIGH PRESSURE
There is excess pressure at the outlet of the compressor.
Turn off the ACS 652 and wait approx. 30 minutes.
PROGRAM ERROR Error in the software.
FULL TANK The internal refrigerant cylinder has been filled to maximum filling level. Carry
out several refill procedures to reduce the internal refrigerant quantity.
ZEROING OIL SCALES Error in the scale settings.
Tare the scales.
HIGH RECOVERY TIME
The recovery time exceeds the set maximum duration. Check vehicle air condi-
tioner for leaks. If error persists, contact customer service.
A/C SYSTEM EMPTY There is no refrigerant in the vehicle air conditioning system.
OUTOIL BOTTLE FULL CALIBRATE SCALE The used oil bottle is full and must be emptied.
OIL IN BOTTLE EMPTY FILL BOTTLE The fresh oil bottle is empty and must be refilled.
A/C SYSTEM FULL There is refrigerant in the air conditioning system.
INCOMPLETE CHARGE The filling time exceeds the safe maximum duration set.
Pressure in internal refrigerant cylinder corresponds to pressure in vehicle air
conditioning system.
CHARGING OIL TIME HIGH The fresh oil filling time exceeds the safe maximum duration set.
There is no vacuum in the vehicle air conditioning system.
Generate vacuum first.
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