Midea M-Thermal Series - Page 54

  M‐ThermalSplit 
20190953
4.9 H0Troubleshooting
Digitaldisplayoutput
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Description
 Communicationerrorbetweenoutdoorunitandhydronicbox.
 M‐ThermalSplitstopsrunning.
 ErrorcodeisdisplayedonhydronicboxmainPCB,outdoorunitmainPCBanduserinterface.
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Possiblecauses
 Powersupplyabnormal.
 Transformermalfunction.
 Interferencefromasourceofelectromagneticradiation.
 OutdoorunitmainPCBorhydronicboxmainPCBdamaged.
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