Operating instructions

29
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Fault Code Fault Description Causes / Repair
071 Overheating sensor interruption Overheating sensor signals temperature value outside the mea-
suring range.
• Check overheating sensor –> fault code 012.
072 Overheating sensor short circuit
074 Overheating detection hardware is • Control box is defective.
defective, operating lock-out Replace control box / blower unit.
090 External reset • Control box reset by external interference voltage.
Check voltage supply, e.g. battery, leads, generator, fuses.
091 Internal reset • Internal control box fault, replace control box / blower unit.
092 ROM error
093 RAM error, at least one RAM cell is
not working
094 EEPROM error, checksum error within
the area of the operating data, diagnostic
parameters or calibration values
095 Invalid data record, checksum error
096 Internal temperature sensor is defective
/ ECU too hot
097 Internal device error
098 Main relay is faulty
099 Too many resets, operating lock-out