Midea M-Thermal Series - Page 47

M‐ThermalSplit  
46 201909
MideaM‐ThermalSplitServiceManual
4.4 E3,E4,H2,H3,Ed,HA,H5,H9Troubleshooting
Digitaldisplayoutput
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Description
 E3indicatesabackupelectricheaterwateroutlettemperaturesensorerror.
 E4indicatesadomestichotwatertanktemperaturesensorerror.
 H2indicatesawatersideheatexchangerrefrigerantoutlet(gaspipe)temperaturesensorerror.
 H3indicatesawatersideheatexchangerrefrigerantinlet(liquidpipe)temperaturesensorerror.
 Edindicatesawatersideheatexchangerwaterinlettemperaturesensorerror.
 HAindicatesawatersideheatexchangerwateroutlettemperaturesensorerror.
 H5indicatesaroomtemperaturesensorerror.
 H9
indicatesacircuit2wateroutlettemperaturesensorerror.
 M‐ThermalSplitstopsrunning.
 ErrorcodeisdisplayedonhydronicboxmainPCBanduserinterface.
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Possiblecauses
 Temperaturesensornotconnectedproperlyorhasmalfunctioned.
 DamagedhydronicboxmainPCB.
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