Specifications

Equipment details
82
Equipment details
83
Interior temperature too low in control level ‘1’
FAULT POSSIBLE CAUSE REMEDY
Compressor runs constantly Faulty thermostat Change the thermostat
Compressor runs for a long time Large quantities have been frozen in the freezer compartment
Compressor does not run (battery connection)
U
KL
=0V There is an interruption in the connection between the battery
and the – electronics
Mainswitchfaulty(ifinstalled)
Additional supply line fuse has blown (if installed)
Establish a connection
Replacethemainswitch
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)
Batterycapacitytoolow
Cable cross section too small
Establish a connection
Replacethebattery
Replacethecable
Start attempt with
U
KL
≤ U
ON
Ambient temperature too high
Insufficient ventilation and/or air supply
Condenser is dirty
Movetherefrigeratortoanotherlocation
Clean the condenser
Electric circuit between the pins in
the compressor 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
12 Troubleshooting
The significance of the red LED (7)
For operational faults it illuminates several
times. The number of pulses depends on the
type of fault.
Eachashlastsforonequarterofasecond.
After the series of impulses a pause follows.
The sequence for the fault is repeated every
four seconds.
No. of
flashes
Fault Possible cause
1 Supply
voltage
The supply voltage
is outside of the
set range.
2 Excessive fan
current
The fan loads the
electronics unit
with more than 1 A
3 The motor
doesn’t start
The rotor is
jammed.
The pressure
difference in the
cooling system is
too high
(> 5 bar).
4 Speed too
low
If the cooling
system is
overloaded, the
minimum speed of
the motor of 1850
RPMcannotbe
maintained.
5 Overheating
of the
electronics
unit
If the cooling
system is loaded
too heavily or the
temperature is
set too high, the
electronics can
overheat.