Draft preview

This page is auto-generated from scraped sources and has not been manually verified against the service manual yet.

Mr-cool Mini Split H00 Error Code

Updated 2026-08-29 · review status: draft Draft - unverified

Quick answer

H 00 returns after one safe reset or the condition does not clear. Tell them the manual trigger is "The indoor PCB main chip does not receive feedback from the indoor EEPROM chip" and point them to 4.7 TS01-IDU: Indoor EEPROM parameter error diagnosis and solution. Technician boundary Stop here: compressor and electrical or inverter work is technician-only. Do not open panels, test capacitors, touch wiring, connect gauges, add refrigerant, or keep resetting the system.

Severity: high · DIY difficulty: intermediate

Safety

TBD - must be written per-code before publish

What H00 means

H 00 returns after one safe reset or the condition does not clear. Tell them the manual trigger is "The indoor PCB main chip does not receive feedback from the indoor EEPROM chip" and point them to 4.7 TS01-IDU: Indoor EEPROM parameter error diagnosis and solution. Technician boundary Stop here: compressor and electrical or inverter work is technician-only. Do not open panels, test capacitors, touch wiring, connect gauges, add refrigerant, or keep resetting the system.

Causes, ranked

  1. Causes not yet documented — verify against the service manual.

Commonly searched as: "mr-cool h00" · "mr-cool error code h00" · "mr-cool air conditioner h00"

Sources

  • SplitAtlas manual-sourced reference — verified 2026-08-29