Eberapacher fault 31

[GUMPY]

So my eber stopped working indicating that the combustion motor was broke.

Had it serviced and a new motor fitted, since putting it back in its done about 20-30hrs in 2hr blocks

This morning it shut down showing;

fault 031 Combustion air blower motor Check lead to combustion air motor for continuity, replace motor if necessary.

Is there likely to be anything external that would cause this or is it just down to a shoddy job done by the agent......

[Roger Crown]

External influences to failed air blower motor is usually too high an intake air temperature, due to the heater not drawing it's air supply externally. Although this is usually a problem over a good period of time. How many hours has the unit done?

[GUMPY]

External influences to failed air blower motor is usually too high an intake air temperature, due to the heater not drawing it's air supply externally. Although this is usually a problem over a good period of time. How many hours has the unit done?

Air is drawn from engine compartment (engine has been dormant for about a year) its generally cool in there, heater has done 2173hrs in three and a half years, its only done 20-30 since a new motor was fitted.

[Roger Crown]

Hi Julian

 

Think I have to agree the unit needs returning to the service agent, they will be able to diagnose better.

Hardly likely to be a "shoddy job " as you infer. They are unlikely to fit a dodgy air motor.

Ebers are a bit of an enigma at times, if you are comfortable dismantling the unit yourself then it could just be a bad connection as suggested in your opening post.

 

Quote "Ebers are a bit of an enigma at times" wow leaving myself wide open here lol, now where are those moderators :-)

 

Roger

[GUMPY]

Ta 4 that, will give them a call tomorrow and see what they say.

Edited April 21, 2016 by Loddon

[paddles up]

Hi Julian,

This fault code is commonly an indication of a wiring fault within the ECU itself rather than any problem with the blower motor. The quick and obvious solution by the 'service agent' is to replace the motor, often unnecessarily.

Panic not though, a simple modification to the internal wiring will fix it rather than forking out for a new ECU too.

Edited April 22, 2016 by paddles up

[GUMPY]

Surely a wiring fault would have shown up earlier in the 3.5 years 2000+ hrs

[paddles up]

Not necessarily, I believe it to be more of a breakdown within the ECU. Itself being a PCB.