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DISCO4.COM > Webasto Fuel Burning Heater

Fault code 22 "Reference resistance wrong"
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spiderlane
 


Member Since: 17 May 2017
Location: London
Posts: 119

2010 Discovery 4 3.0 TDV6 HSE Auto Buckingham BlueDiscovery 4

Hi Daniel

Excellent news! Did you reset the working hours? Was your counter in the same location in the EEPROM as mine?

Cheers
Mark  
Post #226951428th Dec 2021 6:01 pm
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Daniel_o
 


Member Since: 21 Dec 2021
Location: Olsztyn
Posts: 6

Poland 2010 Discovery 4 TDV6 HSE Auto Unknown ColourDiscovery 4

Hi Mark

I have reset the Working Hours. The addresses are the same -- 05F7,..8,...9
I will try to find the address where the Operating Hours are encoded. To reset them.

Daniel  
Post #22713567th Jan 2022 4:54 pm
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spiderlane
 


Member Since: 17 May 2017
Location: London
Posts: 119

2010 Discovery 4 3.0 TDV6 HSE Auto Buckingham BlueDiscovery 4

Hi Daniel

Great stuff, well done.

I couldn't find the Operating Hours location yet, but you might be interested in the investigations I did to try to discover the locations of the other values. (the only one I actually confirmed and changed was the Working Hours which, like you, was enough to get the FBH to work)


Start count : 2905
2905 / 256 = 11
2905 - (11 * 256) = 89

Likely
05EE    59    89
05EF    0B    11

Start counter PH : 56845
56845 / 256 = 222
56845 - (222 * 256) = 13

Likely
05F0    0D    13
05F1    DE    222

Start counter SH : 56797
56797 / 256 = 221
56797 - (221 * 256) = 221

Likely
05F2    DD    221
05F3    DD    221

Working hours : 56797:221
Minutes = 221
56797 / 256 = 221
56797 - (221 * 256) = 221

Original values confirmed
05F7    DD    221
05F8    DD    221
05F9    DD    221

Changed to to 0 hours
05F7    00    0
05F8    00    0
05F9    00    0

Working duration PH : 56798:29
Minutes = 29
56798 / 256 = 221
56798 - (256 * 221) = 222

Likely
05FA    1D    29
05FB    DE    222
05FC    DD    221

Working duration SH : 56797:221
Minutes = 221
56797 / 256 = 221
56797 - (221 * 256) = 221

Likely
05FD    DD    221
05FE    DD    221
05FF    DD    221

Operating hours : 57403:07
Minutes = 07
57403/256 = 224
57403 - (256 * 224) = 59

??

  
Post #22713597th Jan 2022 5:01 pm
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HViik
 


Member Since: 09 Jun 2019
Location: Hml
Posts: 3

Finland 

Thanks for this thread, I solved my webasto problems with this Bow down Bow down Bow down
Click image to enlarge
  
Post #23493141st Oct 2023 12:48 pm
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spiderlane
 


Member Since: 17 May 2017
Location: London
Posts: 119

2010 Discovery 4 3.0 TDV6 HSE Auto Buckingham BlueDiscovery 4

Great news! Let's hope this thread helps more people get their heaters back into service.

Cheers
Mark  
Post #23494613rd Oct 2023 5:58 am
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