EN
CRX50, CRX65
Troubleshooting
25
12
Troubleshooting
The significance of the red LED (fig.
3
2, page 4)
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.
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
Too many start attempts The compressor or fan has been started too
often within a short period of time
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
electronics 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
CRX50-65-Truck-IO-US.book Seite 25 Donnerstag, 18. Oktober 2018 3:51 15
Summary of Contents for CoolMatic CRX 50
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