Midea M-Thermal Series - Page 53

M‐ThermalSplit  
52 201909
MideaM‐ThermalSplitServiceManual
4.8 HFTroubleshooting
Digitaldisplayoutput


Description
 OutdoorunitmainPCBEEPROMerror.
 M‐ThermalSplitstopsrunning.
 ErrorcodeisdisplayedonoutdoorunitmainPCBanduserinterface.

Possiblecauses
 OutdoorunitmainPCBEEPROMisnotconnectedproperly.
 OutdoorunitmainPCBdamaged.
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Procedure

HF 


OutdoorunitEEPROM
1
isnotconnected
properly
Yes
EnsuretheEEPROMisconnected
properly
No

ReplaceoutdoorunitmainPCB  

Notes: 
1. OutdoorunitEEPROMisdesignatedIC23ontheoutdoorunitmainPCB(labeled29inFigure4‐2.2inPart4,2.3"MainPCBsforRefrigerantSystem,Inverter
Module"). 


Midea CAC Confidential