Troubleshooting
COOLMATIC CR Series
50
Interior temperature too low in control level "1"
Compressor does not run (battery connection)
Fault
Possible cause
Remedy
Compressor runs con-
stantly
Faulty thermostat
Change the thermostat
Compressor runs for a
long time
Large quantities have been frozen in
the freezer compartment
–
Fault
Possible cause
Remedy
U
KL
= 0 V
There is an interruption in the connec-
tion between the battery and
the – electronics
Establish a connection
Main switch faulty (if installed)
Replace the main switch
Additional supply line fuse has blown
(if installed)
Replace the supply line
fuse
U
KL
≤
U
EIN
Battery voltage is too low
Charge the battery
Start attempt with
U
KL
≤
U
OFF
Loose cables
Poor contact (corrosion)
Establish a connection
Battery capacity too low
Replace the battery
Cable cross section too small
Replace the cable
(fig.
e
, page 9)
Start attempt with
U
KL
≥
U
ON
Ambient temperature too high
–
Insufficient ventilation and/or air sup-
ply
Move the refrigerator to
another location
Condenser is dirty
Clean the condenser
Electric circuit between
the pins in the compres-
sor interrupted
Defective compressor
Replace the compressor
U
KL
Voltage between the positive and negative terminals of the electronics
U
ON
Cut-in voltage of the electronics
U
OFF
Cut-off voltage of the electronics
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