MCAC-HTSM-201409 Midea R410A Domestic Pools & Spas HPWH 50Hz Technical Manual
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4.2 Name and function description of LCD screen of wired controller
1. COOL indicator: When user sets the cooling water mode, it lights up.
2. HEAT indicator: When user sets the heating water mode, it lights up.
3. PUMP indicator: When user sets the pump mode, it lights up.
4. POOL TEMP indicator: The outlet water temperature.
5. SET TEMP indicator: Show the setting temperature and blank when screen protection. Codes
are shown at the malfunction or protection time.
6. ALARM indicator: It will flash at the malfunction or protection time.
4.2 Names of keys on the controller
7. MODE key: Used to set different modes.
8. UP key: Used to add time or temperature.
9. DOWN key: Used to abate time or temperature.
10. LIGHT: Lighting means working. Light-off means standby. Lighting in 0.2s, and then light-off
in 0.2s, it means reparable error. Lighting in 0.1s, and then light-off in 0.1s, it means data
storage chip error.
4.3 Operation of wired controller
Preparation before running the unit
When running the unit for the first time, all the indicators on the wired controller will light
for 3s, and then, the fiducial web will be display. After no operation for 40s, all indicators