MCAC-HTSM-201506 Midea R410A Direct Heating Commercial Heat Pump 50Hz Technical Manual
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3. Setting temperature: 3 statuses can be displayed - .
4. Timing ON/OFF indication ( ): Indicate the timing information.
5. Function icon:
: Display when water heater system connects to Modbus network;
: Displays when other heat source is provided to the system.
: Displays when water heater maintenance is needed. Press and hold ‘AUXILIARY’
key for 3 seconds to cancel the icon and timing will restart until next maintenance.
: Displays when cycle heating function is on.
: Displays when electric auxiliary heating function is on.
: Displays when check function is on.
: Displays when ambient temperature is below 2ºC which means the main unit
need anti-freezing action.
: Displays when no key operation for 2 minutes and all keys are locked. Press and
hold ‘OK’ key for 3 seconds to unlock.
: Displays when error or protection occurs and means the unit need maintenance
by professionals.
6. Online quantity indication: Under normal status display the quantity of units connected to
the wired controller; under check status display the device serial number.
7. Water level indication: Under normal status displays water level; under water level setting
status displays setting value.
8. Clock: Under normal status displays clock; under timing setting displays the setting timing.
9. Water temperature: Under normal status display water temperature; under water
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