Troubleshooting - Dometic COOLMATIC CRX50 Montage- Und Bedienungsanleitung

Troubleshooting

12 Troubleshooting
The significance of the red LED (fig. 6 2, page 4, fig. 7 2, page 5)
For operational faults it illuminates several times. The number of pulses depends on
the type of fault.
Each flash 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.
CRX50, CRX65, CRX80
Number of
Fault
flashes
1 Line Voltage
2 Excessive fan current
Too many start attempts The compressor or fan has been started too
3 The motor doesn't start The rotor is jammed.
4 Speed too low
5 Overheating of the
electronics unit
Constantly Temperatur sensor
errors
30
Possible cause
The supply voltage is outside of the set range.
The fan load on the electronics unit is more
than 1 A.
often within a short period of time.
The pressure difference in the cooling system
is too high (> 5 bar).
If the cooling system is overloaded, the
minimum speed of the motor of 1,850 rpm
cannot be maintained.
If the cooling system is loaded too heavily or
the temperature is set too high, the
electronics can overheat.
Temperatur sensor is defective.
CRX
EN