Midea M-Thermal Series - Page 65

M‐ThermalSplit  
64 201909
MideaM‐ThermalSplitServiceManual
4.16 P3Troubleshooting
Digitaldisplayoutput
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Description
 Compressorcurrentprotection.
 Whenthecompressorcurrentrisesabovetheprotectionvalue(4/6kWmodels18A,8/10kWmodel19A),thesystem
displays P3 protection and M‐Thermal Split stops running. When the current returns to the normal range, P3 is
removedandnormaloperationresumes.
 ErrorcodeisdisplayedonrefrigerantsystemmainPCBanduserinterface.
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Possiblecauses
 Poorcondenserheatexchange.
 Highpressuresideblockage.
 Invertermoduledamaged. 
 Compressordamaged.
 OutdoorunitmainPCBdamaged.
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