BA 35101/02/ 03 EN – Edition 1.0 * 35201_02b410.fm 4-3
Troubleshooting
4.2 Malfunctions in the air conditioning system (option)
Only authorised workshops and trained staff may carry out repairs, and
fill up and empty the air conditioning system!
Malfunctions (air conditioning) Possible causes See
Fan does not run
Defective or loose fuse
6-8
Interrupted line
–
Defective fan motor
–
Defective fan switch
3-48
Fan cannot be switched off Short circuit in cable or in fan switch
–
Reduced fan output
Dirty contacts
–
Size of electric lines too small
–
Heat exchanger extremely dirty
5-27
No or insufficient heating output
Flow temperature too low
–
Defective thermostat
–
Dirty filter
5-26
Dirty heat exchanger fins
5-27
Loss of refrigerant on equipment
Loose hose connection
5-28
Damaged hose
Damaged heat exchanger
Compressor does not run
Interruption in solenoid coil of compressor
Loose or torn V-belt
V-belt pulley does not turn
Compressor clutch slips
Defective controls
Evaporator overflow Expansion valve is stuck in open position
Iced-up evaporator
Thermostat sensor in wrong position
Defective expansion valve or thermostat
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