This document is a technical service manual for gas water heaters, which introduces the overall description, component names, operation methods, electronic control functions, fault protection, and fault code indications of gas water heaters.
This document is a technical service manual for the Midea JSQ25-CX313 gas water heater. It provides detailed information on the unit's overview, including key functions such as power switching, temperature adjustment, and specific modes like 'Smart Variable Flow' and 'Washing Modes'.
The guide also covers component identification, installation and disassembly procedures, control system functionality, fault protection codes, and a list of spare parts. It includes specific instructions for both physical units and shell-only testing configurations. This manual is written in Chinese.
Press and hold the 'Down' key for 3 seconds while the unit is powered on.
It indicates an E5 [Fan] fault or a C4 fan blockage fault.
The display board enters sleep mode, where visual brightness is half of normal.