"Cooling Fan" NOTE: If the level sensor is not connected, all the features of the control panel does not start, power symbol, the symbol of water a long bright, fan symbols, symbols refrigeration, cleaning symbols and wind put symbol flashing, buzzer Call the police. Inlet valve protection function: under any operating condition, the inlet valve opens 15 minutes after the water, as the water level change, will stop the water inlet valve, the water re-open after 15 minutes, specific procedures as follows (m : min): On 15m → 15m → stop start stop 15m → 15m → 15m → open stop open 15m → 30m → stop 30m.