there are also other places for codes to appear on this unit, the steering and vehicle managers also offer up operational, informational, and error codes. the codes you see on the hr meter display are the same as in most other ev100 sets, and are ev100 codes. however my book does not go into those codes, which indicates to me that we would need to other codes to further troubleshoot this problem.
are you SURE this are error codes, (do they have a dash mark; "-" before the code?
have you used a handset and changed any of the "card type" settings?
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