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[Solved] Scania R 420 2007 Euro 5: Eberspacher Airtronic D4 Auxiliary Heating - Heater Error & ATA Codes

pompa354 13986 11
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  • #1 16917905
    pompa354
    Level 8  
    Hello, I have a problem with the parking heater in Scani r420 2007 euro 5. After turning on the stove, the fan works for five seconds and the info on the remote control pops up, heater error, then you hear beeping and the stove stops working. I checked the fuel pump and it looks like it does not get an impulse from the controller and does not give fuel. The errors that popped up are ATA 112 and ATA 120 and after moving the power plug an ATA 148 error appeared, can someone tell me what these error codes mean because I can not find. The furnace is Eberspacher Airtronic M, D4. Thank you very much
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  • #2 16934990
    pompa354
    Level 8  
    Please help me only with the ATA 120 error
    I don't know what it means and I can't look for information on it anywhere. The heating will turn on the fan three times for a short while and soon it starts squeaking and a heater error pops up. Please give me a hint
  • Helpful post
    #3 16935637
    mariomalinie
    Level 19  
    Hello.
    ATA120
    A short circuit in the glow plug circuit. Check the candle. Resistance about 2 Ohm.
  • #4 16937639
    pompa354
    Level 8  
    Hello, thanks for the hint, the candle was actually to be replaced, but now an ata 133 error has appeared :( the fan starts fifteen times and squeaks again and a heater fault pops up. The fuel pump does not get an impulse and it seems to me that it is working, because when connected to the rectifier, you can hear that it speaks. Please, give me some hint what this error is
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  • #5 16939167
    mariomalinie
    Level 19  
    Hello
    ATA 133- Combustion air fan impeller not moving. Fan impeller blocked, rotating too fast, or no magnet in it. Most often, the engine to be replaced.
  • #6 16943012
    pompa354
    Level 8  
    I checked the fan motor by connecting the 1.5v battery and the fan works without any problems, after stopping by hand, it unscrews without noticeable abrasions or any resistance to play on the bearings, and you do not feel it.
    I wonder if the driver would be blocked by several unsuccessful firing attempts, it is possible that it shows, for example, a fan error? or maybe there is another reason why this error pops up. Is it possible to unlock the controller at home without having diagnostic equipment?
  • #7 16943804
    mariomalinie
    Level 19  
    Hello
    Often this error occurs when the brushes in the fan motor are running low. After hitting the engine, it works for some time, but it may not reach the set RPM, and then an error appears.
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  • #8 16943843
    pompa354
    Level 8  
    Hello, I am surprised that after turning on the heating, the fan starts to start fifteen times, about 3 seconds at high speed and does not give an impulse to the fuel pump, then a heater error pops up and that's all. Can running brushes have an impact on these symptoms?
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  • #9 16944508
    mariomalinie
    Level 19  
    With such symptoms, I always replace the engine plus inspection and cleaning of the entire device and the topic ends for the next few years.
  • #10 16944525
    pompa354
    Level 8  
    Ok. I'll have a look at that motor tomorrow
  • #11 16948312
    SP7SEC
    Level 29  
    As I know this device, 99 percent of the engine and the burner are to be replaced, this is their problem, the manufacturer provides for 2500 to 3000 hours of work and replacement
  • #12 17269624
    pompa354
    Level 8  
    Hello, I replaced the motor because the brushes were actually running out and it's ok, Thanks for your help

Topic summary

The discussion revolves around a malfunctioning Eberspacher Airtronic D4 auxiliary heater in a 2007 Scania R 420 Euro 5 truck. The user reports that the heater displays an error after a brief operation, with specific ATA error codes: ATA 112, ATA 120, and ATA 133. Responses indicate that ATA 120 signifies a short circuit in the glow plug circuit, while ATA 133 suggests issues with the combustion air fan impeller. The user replaces the glow plug and later the fan motor due to worn brushes, resolving the heater's operational issues. The importance of inspecting and potentially replacing the fan motor and burner is emphasized, as these components typically have a limited operational lifespan.
Summary generated by the language model.
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