What do the error codes in the error memory mean?

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Hello everyone.
I found a few errors, but I don't know how to fix them.
In document number 19, 'SchST Daten Bus,' I found the following errors:
-01207 Control unit for auxiliary heater J364, open circuit.
In item 09, control electronics.
-01314 Engine control unit, open circuit.
-01320 Steurgerät for Climatronic J255, open loop system.

What do these errors mean?
My heater isn't working.
Yesterday, I removed the battery and installed a new one. Could it be related to that?
Best regards,
Nihat

10-02-2009, 22:26 Subject: What do the error codes in the error memory mean?

Have you ever deleted something and then checked to see if it was really gone?

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Yes, they were out.
I don't know if they will be there again tomorrow.

Best regards,
Nihat

10-02-2009, 22:56 Subject: What do the error codes in the error memory mean?

And did the errors reappear?

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All errors have been fixed except for the following issues found in the SchST data bus:
-01207 Control unit for auxiliary heater J364, open circuit.
After deleting, it reappears.
Sure, here's the translation:

'MFG' is an abbreviation for 'Mit freundlichen Grüßen,' which translates to 'Sincerely' or 'Best regards' in English.

11-02-2009, 19:52 Subject: What do the error codes in the error memory mean?

You're saying that your ZH isn't working!
So, I would look for the fault in the power supply there; an open circuit could indicate a broken cable. Is the plug securely connected? Is there power?
I haven't seen the error "open loop" described that way before; it always seems to be followed by a break after the plus or minus sign.

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'I had a faulty control unit for the auxiliary heater, and about 3 hours ago I installed a replacement control unit in the auxiliary heater, and it's working, but unfortunately, I'm occasionally getting this error code, which is described as 01207.'
Best regards,
Nihat

11-02-2009, 21:00 Subject: What do the error codes in the error memory mean?

Then it might be a bug.
You would need to use the manufacturer's software/tester to read the data – Eberspächer Webasto.

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Good morning.
I've cleared the error message multiple times over the past few days, and also turned on the auxiliary heater, and the error message hasn't reappeared.
Thank you for your help.
Sure, here's the translation of the text from German to English:

'MFG nihat' translates to 'Best regards, nihat' or 'Sincerely, nihat.' It's a common German abbreviation for 'Mit freundlichen Grüßen,' which means 'With kind regards' or 'Best regards.'