Haier ductless-mini-split — Haier residential split air conditioners documented in the Haier service and resource library Error Codes Directory

Haier E5: overcurrent stops are as much about the supply as the unit

Haier uses E5 for an overcurrent condition, meaning the current drawn exceeded what the control permits. Current is a product of the work being demanded and the voltage available to do it, so a low or unstable supply produces the same code as a compressor that is hard to turn. Applies to: Haier residential split air conditioners documented in the Haier service and resource library This applies to Haier residential split equipment documented in the Haier service library. Haier manufactures for several brand programmes, and units sold under other names may use a different code set even where hardware overlaps. Confirm against the manual issued with your own unit. Owner-safe checks: Make one start attempt and note how long the outdoor unit runs before the code returns. | Watch whether household lighting reacts at the moment of start, and note the time of day each occurrence happens. | Confirm no protective device in the consumer unit or panel has operated, and that the unit is on the supply arrangement it was installed with. Qualified technician: Measuring supply voltage under starting load, testing compressor windings, and assessing the drive are energised tasks for a qualified person. | A protective device that trips when the unit starts, a burning smell, or heat at an isolator means leaving the supply off and arranging an electrical inspection before anything else.