eberspacher diagnostic codes

[pquinn]

hi all, can anybody tell me what the code 031 means in the eberspacher diagnostic readout for a hydronic 5.

cant find anything on their web site or in the manual.thanks

[Gary Peacock]

hi all, can anybody tell me what the code 031 means in the eberspacher diagnostic readout for a hydronic 5.

cant find anything on their web site or in the manual.thanks

 

 

031 Combustion air blower motor Check lead to combustion air motor for continuity, replace

motor if necessary.

[pquinn]

031 Combustion air blower motor Check lead to combustion air motor for continuity, replace

motor if necessary.

 

 

 

thanks gary.

 

 

any reason why this problem may have occured as the unit is only about a year and a half old.

and only gets an hours use a day on average.mainly to heat water.

[Gary Peacock]

thanks gary.

any reason why this problem may have occured as the unit is only about a year and a half old.

and only gets an hours use a day on average.mainly to heat water.

 

31 Sugests the blower motor is open circuit so it shouldn't be that hard to find out if it's the wiring or motor if it's the motor it might just take a spin by hand to free the brushes.

 

A lot of Eberspacher problems are installation related.

 

This is the full list of diagnostics- (It is useful for at least ruling out some other possible faults too)

 

000 Normal Operation

010 Overvoltage Check voltage between terminals 1(red) and 2(brown) at connector.

(B1). This must be less than 16 volts.

Check battery, electrical leads and vehicle charging system.

011 Under voltage shut down Check voltage between terminals 1(red) and 2(brown) at

connector (B1). This must be greater than 10.2 volts

Check battery, electrical leads and vehicle charging system.

012 Overheating Check for possible causes of overheat (water circuit), Sensor.

Check overheat switch resistance values. Temperature at

temperature sensor or overheat sensor is greater than 125°C.

014 Possible overheating detected Difference of measured values at temperature sensor >15°C

(difference evaluation) (min. 70°C water temperature and metering pump in operation);

Check temperature sensor and overheating sensor,

replace if necessary. Check values from previous page.

015 Too many overheats Remove cause of over heat. Reset control unit using 7 day

timer or fault code retrieval device to unlock control unit. Permanent

overheating counter reading exceeded. Heating enable only

possible by means of diagnostics system (press both “LL” keys

simultaneously).

017 Overheating detected Temperature at temperature or overheating sensor > 130 °C,

emergency OFF if Fault Code 012 or 014 not applicable; check water

circuit, check temperature sensor and overheating sensor; replace if

necessary. See graph on previous page.

020 Open circuit - glow pin Check glow pin and electrical leads for continuity, replace if

necessary.

021 Short circuit - glow pin Check glow pin and electrical leads for continuity, replace if

necessary.

030 Combustion air blower motor Blower impeller or electric motor may be jammed (frozen solid, dirty,

etc.) Fix jam, replace electric motor if necessary.

031 Combustion air blower motor Check lead to combustion air motor for continuity, replace

motor if necessary.

032 Combustion air blower motor short-circuit Check combustion air blower motor (electric motor); replace if

necessary. Check power supply (chafed, corroded etc.)

038 Vehicle fan relay control break Check electric lead to relay, fix break, replace relay if necessary

For wiring harness (P/N CA1 60 401) without relay, replace harness.

039 Vehicle fan relay control short circuit Check electric lead to relay, fix break, replace relay if necessary

For wiring harness (P/N CA1 60 401) without relay, replace harness.

041 Water pump break Check supply lead to water pump for continuity, remedy break,

replace water pump if necessary.

042 Water pump short-circuit Check supply lead to water pump for short circuit, check water

pump, replace water pump if necessary.

26

Maintenance / Troubleshooting / Repair

Fault Code Fault Description Causes / Repair

27

047 Short circuit - fuel metering pump Check for wires for short to fuel metering pump. Test fuel metering

pump. Replace if necessary.

048 Open circuit - fuel metering pump Check supply lead to metering pump for continuity, remedy break,

replace if necessary.

050 Too many no start attempts Safety time counter reading exceeded. Reset control unit using 7

day timer or fault code retrieval device to unlock control unit.

051 Faulty flame recognition At start, if flame sensor is a above 70°C > 240 seconds; check

exhaust gas and combustion air supply, check flame sensor, replace

if necessary. For flame sensor values see graph on previous page.

052 No start safety time exceeded No flame detected on start attempt. Check fuel delivery and fuel

supply, Check exhaust gas and combustion air ducts.

053 Flame cutout in boost mode Heater has started successfully the flame has extinguished.

Check fuel supply. Check combustion air and exhaust flow. Check

flame sensor resistance value. Replace flame sensor if necessary.

054 Flame cutout in high mode Heater has started successfully the flame has extinguished.

Check fuel supply. Check combustion air and exhaust flow.

056 Flame cutout in low mode Check flame sensor resistance value.

060 Open circuit - temperature sensor Temperature sensor detects a value beyond it's range.

Check connections. Check sensor resistance values between

11 and 12 at connector B2 > 2 M Ω (if open circuit).

061 Short circuit - external temperature sensor Check connections. Check sensor resistance values between

11 and 12 at connector B2 < 50 Ω (if short circuit).

Temperature sensor values on previous pages.

064 Open circuit - flame sensor Sensor is sensing value outside of range. Check connection leads.

Resistance values between 13 and 14 at connector

B2 > 3040 Ω (if open circuit).

065 Short circuit - flame sensor Check connection leads. Resistance values between 13 and 14 at

connector B2 > 780 Ω (if short circuit). Flame sensor values on

page 17.

071 Open circuit - overheat sensor Check connection leads. Resistance values between 9 and 10 at

connector B2 > 2 M Ω (if open circuit).

072 Short circuit - overheat sensor Check connection leads. Resistance values between 9 and 10 at

connector B2 < 50 M Ω (if short circuit).

090 Control unit defect (internal fault) Control unit malfunction due to interference voltage from

092 Control unit defective(ROM error) vehicle electrical system; possible causes low batteries, charges,

093 Control unit defective(RAM error) other sources of interference, eliminate interference voltages.

Internal faults detected in microprocessor/ memory detected.

Replace control unit.

097 Control unit defective (power failure) Internal failure. Replace control unit.

[pagan witch]

Thanks for the error codes. I'm going to be cheeky and ask 2 questions.

 

1) I have a 7 day timer - how do I use this to access and if need be re-set the heater (after of course curing the fault)

 

2) My Ebby DW4 (might be a 5 - the label has long gone) has recently sometimes started making a fluttering noise as it starts, sounds much like an intermittent flame. If it does the fluuering trick then sometimes it 'survives' other times it gives up, goes through the re-start cycle and performs flawlessly.

 

Other times however it just starts flawlessly. There seems to be no rule to which it will do, time of day - like having been off all night as opposed to a mid day hot water boost having been on 4 - 5 hours previously makes no apparent difference to it's start or not start.

 

Took it to pieces last week and replaced the glow pin, also cleaned out the combustion chamber (which wasn't at all bad anyway) but to no avail. Not being very technical here but there is a shiny metal tube that goes into the combustion chamber. This shiny metal tube has 2 small holes in it that are a bit coked but it puzzles me why sometimes we get a flawless performance whilst other times we get the fluuters.

 

Any ideas please ?

[Lol]

Thanks for the error codes. I'm going to be cheeky and ask 2 questions.

 

1) I have a 7 day timer - how do I use this to access and if need be re-set the heater (after of course curing the fault)

 

2) My Ebby DW4 (might be a 5 - the label has long gone) has recently sometimes started making a fluttering noise as it starts, sounds much like an intermittent flame. If it does the fluuering trick then sometimes it 'survives' other times it gives up, goes through the re-start cycle and performs flawlessly.

 

Other times however it just starts flawlessly. There seems to be no rule to which it will do, time of day - like having been off all night as opposed to a mid day hot water boost having been on 4 - 5 hours previously makes no apparent difference to it's start or not start.

 

Took it to pieces last week and replaced the glow pin, also cleaned out the combustion chamber (which wasn't at all bad anyway) but to no avail. Not being very technical here but there is a shiny metal tube that goes into the combustion chamber. This shiny metal tube has 2 small holes in it that are a bit coked but it puzzles me why sometimes we get a flawless performance whilst other times we get the fluuters.

 

Any ideas please ?

 

 

Hi

 

Not sure if your answers are here but the ESPAR site (North American Eberspacher I believe) is much better than the European Eberspacher one. The downloadable manuals are far superior in respect of errors, diagnostics and maintainance instructions:

 

 

http://www.espar.com/html/service/download/technical.html

 

 

Go read and enjoy!

[Mick_B]

Velly Velcome Lol..

In with a bang. Handy link.

[pagan witch]

Hi

 

Not sure if your answers are here but the ESPAR site (North American Eberspacher I believe) is much better than the European Eberspacher one. The downloadable manuals are far superior in respect of errors, diagnostics and maintainance instructions:

http://www.espar.com/html/service/download/technical.html

Go read and enjoy!

 

Ace link - much to savour. As you say Ebby in the UK and Europe are not at all forthcoming. Daresay their excuse is that it is an attempt to stop us blowing ourselves up and suing them.