Dometic Coolmatic CR50 - Interior Temperature Too Low; Compressor Does Not Run (Battery Connection)

EN
CoolMatic Troubleshooting
29
Interior temperature too low in control level “1”
Compressor does not run (battery connection)
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
–
Fault Possible cause Remedy
U
TERM
= 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
TERM
≤ U
ON
Battery voltage is too low Charge the battery
Start attempt with
U
TERM
≤ 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 8)
Start attempt with
U
TERM
≥ U
ON
Ambient temperature too high –
Insufficient ventilation and/or air supply Move the refrigerator to
another location
Condenser is dirty Clean the condenser
Electric circuit between the
pins in the compressor
interrupted
Defective compressor Replace the compressor
U
TERM
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
CR50-65-80-110-140--O-US.book Seite 29 Donnerstag, 13. Oktober 2016 2:37 14