Key points in this article
Safety always comes first
Keep a few safety lines firm: do not modify the unit yourself, stop use on odd heat or smell, avoid outdoor charging in storms, and keep children and pets away from the charging area.
For reading fault codes, write the timeline and responsibilities into the agreement. Inspection frequency, response limits and settlement cycles decided in advance prevent the trust loss that vague arrangements quietly create.
You do not need complex formulas to understand reading fault codes. The core point is simple: the system adjusts to real conditions, and most confusion clears up once the basics are stated plainly.
Three small habits help every day: look at the unit before use, confirm it has stopped after use, and stop and report at once if something looks wrong. Turn these into routine and many problems disappear.
Across Yantai districts the base conditions and habits are not identical, so we look at demand density first, then site conditions, and only then the venue. judgement from the field beats a paper impression.