Midea M-Thermal Series - Page 61

M‐ThermalSplit  
60 201909
MideaM‐ThermalSplitServiceManual
4.14 P0,HPTroubleshooting
Digitaldisplayoutput
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Description
 P0 indicates suction pipe low pressure protection. When the suctionpressurefallsbelow0.14MPa,thesystem
displaysP0protectionandM‐ThermalSplitstopsrunning.Whenthepressurerisesabove0.3MPa,P0isremovedand
normaloperationresumes.
 HPindicatesP0protectionhasoccurred3timesin60minutes.WhenanHPerroroccurs,amanualsystemrestartis
requiredbeforethesystemcanresumeoperation.
 ErrorcodeisdisplayedonoutdoorunitmainPCBanduserinterface.
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Possiblecauses
 Lowpressureswitchnotconnectedproperlyorhasmalfunctioned.
 Insufficientrefrigerant.
 Lowpressuresideblockage.
 PoorevaporatorheatexchangeinheatingmodeorDHWmode.
 Insufficientwaterflowincoolingmode.
 OutdoorunitmainPCBdamaged.
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