Midea M-Thermal Series - Page 81

M‐ThermalSplit  
80 201909
MideaM‐ThermalSplitServiceManual
4.22 PPTroubleshooting
Digitaldisplayoutput
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Description
 Watersideheatexchangerinlettemperatureishigherthanoutlettemperatureinheatingmode.
 M‐ThermalSplitstopsrunning.
 ErrorcodeisdisplayedonhydronicboxmainPCBanduserinterface.
 HbindicatesPPhasdisplayed3times.
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Possiblecauses
 Temperaturesensornotconnectedproperlyorhasmalfunctioned.
 4‐wayvalveisblockedordamaged.
 HydronicboxmainPCBdamaged.
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