Dometic CRX Series - Low Voltage and Fan Current Faults; Motor Start and Speed Issues; Electronics and Sensor Faults

EN
Troubleshooting CRX
30
CRX110, CRX140
4 Speed too low If the cooling system is overloaded, the mini-
mum speed of the motor of 1,850 rpm can-
not be maintained.
5 Overheating of the elec-
tronics unit
If the cooling system is loaded too heavily or
the temperature is set too high, the electron-
ics can overheat.
Constantly Temperature sensor
errors
Temperature sensor is defective.
Number of
flashes
Fault Possible cause
1 Low Voltage The supply voltage is outside of the set range.
2 Excessive fan current The fan load on the electronics unit is 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 mini-
mum speed of the motor of 1,850 rpm can-
not be maintained.
5 Overheating of the elec-
tronics unit
If the cooling system is loaded too heavily or
the temperature is set too high, the electron-
ics can overheat.
Constantly Temperature sensor
errors
Temperature sensor is defective.
Number of
flashes
Fault Possible cause
CRX50-65-80-110-140-IO-US.book Seite 30 Dienstag, 3. Juli 2018 1:22 13