CoolMatic CRF-50 - Waeco

CoolMatic CRF-50
Troubleshooting
11 Troubleshooting
Compressor does not run
Fault Possible cause Remedy
U KL = 0 V
There is an interruption in the connection
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 ON 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
Cable cross section too small
Start attempt with Ambient temperature too high –
U KL ≥ U ON
Electric circuit between
the pins in the compressor
interrupted
Usage when the ambient
temperature is too
low
Insufficient ventilation and/or air
supply
Condenser is dirty
Fan defective (if installed)
Defective compressor
The compressor only starts up at an
ambient temperature of more than
+16 °C.
Replacing the battery
Replace the cable
(fig. 8, page 6)
Move the freezer to
another location
Clean the condenser
Replace the fan
Replace the compressor
Only switch on the freezer
at an ambient temperature
of more than +16 °C.
U KL
U ON
U OFF
Voltage between the positive and negative terminals of the electronics
Cut-in voltage of the electronics
Cut-off voltage of the electronics
Interior temperature too low in control level “1”
Fault Possible cause Remedy
Compressor runs constantly
Compressor runs for a
long time
Thermostat sensor has no contact on
the vaporiser
Faulty thermostat
Large quantities have been frozen in
the freezer compartment
Secure the sensor
Change the thermostat
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33