Eberspacher fault code 13

[jimmyk]

I know eberspacher problems feature here regularly and I apologise for another one. I have the above fault code. Runs for exactly 14 minutes then gets cold and stops. Fault code 13 then appears on the timer. I have googled this and it appears that mostly this is down to squashed piping. The piping is all. Ok. No different to the last 10 years. Any ideas please. The remote sensor for the heat broke a while ago but it has been working without this. Thanks

 

[Minchsailor]

On my list of fault codes for an Eber 4 I have for fault code 13:

Overheating at the flame sensor:

Flame sensor signals temperature at the heat exchanger is too high:
1. Check hot air pipes for blockage - remove blockage.
2. Sum of the component ratings of air conducting parts is too large - Check air system (dunno what this means!)
3. Check flame sensor, if UK check overheating sensor. If these OK, check fuel quantity from pump.

 

[jimmyk]

On my list of fault codes for an Eber 4 I have for fault code 13:

Overheating at the flame sensor:

Flame sensor signals temperature at the heat exchanger is too high:
1. Check hot air pipes for blockage - remove blockage.
2. Sum of the component ratings of air conducting parts is too large - Check air system (dunno what this means!)
3. Check flame sensor, if UK check overheating sensor. If these OK, check fuel quantity from pump.

Yeah I have checked the pipes and replaced filter in pump. Think it must be the sensor gone

 

[David2452]

If the air duct is all OK then the dual flame sensor / overheat sensor may be faulty, it can be checked by simple resistance values detailed in the manual. the lesser possibility is lean running which can be caused by a restriction in the fuel lines,loose joint(s) pulling air in or a worn pump, all can be checked using a small calibrated vessel.
If the remote sensor is removed it will normally revert to sampling the incoming air and use that parameter to govern its output.

 

[jimmyk]

If the air duct is all OK then the dual flame sensor / overheat sensor may be faulty, it can be checked by simple resistance values detailed in the manual. the lesser possibility is lean running which can be caused by a restriction in the fuel lines,loose joint(s) pulling air in or a worn pump, all can be checked using a small calibrated vessel.
If the remote sensor is removed it will normally revert to sampling the incoming air and use that parameter to govern its output.

I will order one. This heater is like triggers broom. Over the years I've had a new Ecu. New pump. Replaced the sensor about 6 years ago. Oh well at least when it works it does keep me warm