Kontakt:
Zittauer Straße 12
Tel. + 49 35844/ 70234
www.elektromaschinen-koci.de
D – 02796 Kurort Jonsdorf
Fax + 49 35844/ 72103
12
8. Troubleshooting
Before you start working on the compressor and its electrical system, be sure that it is turned off
completely and can not be switched on again/ by accident. Check professionally that the compressor
carries no voltage.
Work on the compressor must be carried out only by trained personnel or by specialists.
Where is the fault?
Fault and remedy
Operating voltage to contact terminal
Pre-fuse is defective, change fuse,
30 relay (+), D+ (61) no control voltage – (31),
no voltage from the alternator,
control light is not on
Check alternator, not properly connected,
Check electrical system on the vehicle!
Operating voltage to contact terminal 30 relay (+), Check Fuse F1, change fuse,
No operating voltage to Plug D (Fuse F1)
Bend contacts in fuse holder,
– (31), control light is not on
no voltage from alternator
,
not properly connected,
Check electrical system on the vehicle!
Operating voltage to contact terminal 30 relay (+),
Defective control switch,
operating voltage to plug D ( Fuse F1),
not properly connected,
No voltage at Plug 61 left plug under
check circuit against circuit diagram.
Fuse F1 in connection box,
Check electrical system on the vehicle!
control light is on - dim
Operating voltage to contact terminal 30 relay (+),
Power contact on power relay (K1)
operating voltage at Plug D (Fuse F1),
no flow-through,
no voltage at Plug 61 left plug
Exchange power relay (K1).
under Fuse F1 in connection box, operating voltage
at power relay (K1) on,
control light is on – dim
Operating voltage to contact terminal 30 relay (+),
Control voltage too low < 75%
operating voltage at Plug D (Fuse F1),
of operating voltage
voltage at Plug 61 – left Plug under
Check electrical system on the vehicle,
Fuse F1 in connection box,
increase control voltage!
control light is on – bright
if control voltage < 90% of operating
voltage the controls function again,
motor can be switched on again.
Switch off control switch and switch
on again after c. 15 seconds.
If motor doesn't run:
please send in for repair!
Motor sometimes switches off but can be
Loose contact – check fault on controls
switched back on after a short while.
Automatic reconnection lock has been
triggered.
Check electrical system on the vehicle!
Switch off control switch and switch
on again after c. 15 seconds.
Compressor running too slowly, not enough power,
Operating voltage at terminal 30 relay (+)
check operating voltage at contact terminal 30
contacts terminal 31 (-) at motor
relay (+) on.
if voltage drop at the cable, use cable
of greater sectional diameter.
Check electrical system on the vehicle!
