Midea M-Thermal Series - Page 70

  M‐ThermalSplit 
20190969
4.18 P5Troubleshooting
Digitaldisplayoutput
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Description
 High temperature difference between water side heat exchanger water inlet and water outlet temperatures
protection.
 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.
 Waterpipingcontainsair.
 Insufficientwaterflow.
 HydronicboxmainPCBdamaged.
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