Waeco CoolMatic MDC Series, Инструкция по эксплуатации

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Troubleshooting COOLMATIC MDC Series
34
11 Troubleshooting
Error code LED
The error code LED indicates various faults with a different number of
flashes. One flash lasts a 1/4 of a second. The error codes are repeated
every 4 seconds.
Compressor does not run
Number of
flashes
Error type Possible cause
1 Battery protection shut
down The battery voltage is outside of the set range
2 Fan overvoltage shut
down The fan is consuming more than 0.5 A on average
or 1 A peak values from the electronic unit
3 Motor start error The rotor is stuck or the differential pressure in the
cooling system is too high (> 5 bar)
4 RPM too low If the cooling system is overloaded, the minimum
speed of the motor of 1900 RPM cannot be
maintained
5 Thermal shut down of
the electronic unit If the cooling system is overloaded or the ambient
temperature is too high, the electronic unit
becomes too hot
Fault Possible cause Remedy
U
T
= 0 V The connection between the battery
and the electronics is interrupted Establish a connection
Main switch defective (if installed) Replace the main switch
Additional supply line fuse has blown
(if installed) Replace the fuse
U
T
≤
U
ON
Battery voltage is too low Charge the battery
Start attempt with
U
T
≤
U
OFF
Loose cables
Poor contact (corrosion) Establish a connection
Battery capacity too low Replace the battery
Cable cross section too low Replace the cable
(fig.
7 , page 5)
Start attempt with
U
T
≤
U
ON
Ambient temperature too high –
Insufficient ventilation Move the cooling device
Condenser is dirty Clean the condenser
Fan defective (if installed) Replace the fan
U
T
Voltage between the positive and negative electronic terminals
U
ON
Switch-on voltage of the electronics
MDC.book Seite 34 Montag, 27. September 2010 4:01 16