Troubleshooting - Dometic CRX Serie Instrucciones De Montaje

CRX
12

Troubleshooting

The significance of the red LED (fig. 6 2, page 5, fig. 7 2, page 6)
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 fol-
lows. The sequence for the fault is repeated every four seconds.
CRX50, CRX65, CRX80
Number of
Fault
flashes
1 Low 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 elec-
tronics unit
Constantly Temperature sensor
errors
CRX110, CRX140
Number of
Fault
flashes
1 Low Voltage
2 Excessive fan current
EN
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 mini-
mum speed of the motor of 1,850 rpm can-
not be maintained.
If the cooling system is loaded too heavily or
the temperature is set too high, the electron-
ics can overheat.
Temperature sensor is defective.
Possible cause
The supply voltage is outside of the set range.
The fan load on the electronics unit is more
than 1 A.
Troubleshooting
33