Midea ESG-Inv M Series - Page 26

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ESG‐InvM
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Part4 ‐ Control
Forcoolingmode:
Component Wiringdiagramlabel Controlfunctionsandstates
Invertercompressor  COMP Runsatoilreturnoperationrotationspeed
DCfanmotor FAN Controlledaccordingtocoolingmode
Electronicexpansionvalve EXV 304(steps)
Four‐wayvalve 4‐WAY Off
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5.2 DefrostingOperation
• Normaldefrosting
Inordertorecoverheatingcapacity,thedefrostingoperationisconductedwhentheoutdoorunitairsideheatexchanger
isperformingasacondenser.Thedefrostingoperationiscontrolledaccordingtooutdoorambienttemperature,airside
heatexchangerrefrigerantoutlettemperatureandthecompressorrunningtime.
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• Manualdefrosting
Itcanbeactivebysettingonthewiredcontroller,whichisalsoaimedtohelpheatpumprecoverheatingcapacityquickly.
Manualdefrostingfunctionwillbedeactivatedautomaticallyafternormaldefrosting.
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Component Wiringdiagramlabel Controlfunctionsandstates
Invertercompressor  COMP Runsatdefrostingoperationrotationspeed
DCfanmotor FAN Off
Electronicexpansionvalve EXV Fullyopen
Four‐wayvalve 4‐WAY Off
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5.3 SmartGridfunction
The grid will provide two signals(EVU, SG) to indicate the grid load. Heat pump with Smart Grid function can identify
differentsignalscombinationandadjustworkingstatetoadapttothegridload.WiththehelpofSmartGridfunction,heat
pumpwillgiveprioritytousecleanenergyasmuchaspossibletoachieveenergysavingandcarbonreduction.
EVUsignal SGsignal Heatingcontrol Coolingcontrol
ON ON
Boostheatingmode
(Heatingcapacityenhancedcomparedtonormalheatingmode)
Normaloperation
ON OFF
Boostheatingmode
(Heatingcapacityenhancedcomparedtonormalheatingmode)
Normaloperation
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OFF ON Normaloperation
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OFF OFF Heatpumprunsforcertaintimeandthenturnsoff.
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