Midea M-Thermal Series - Page 59

M‐ThermalSplit  
58 201909
MideaM‐ThermalSplitServiceManual
4.12 H7Troubleshooting
Digitaldisplayoutput
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Description
 Abnormalmaincircuitvoltage.
 M‐ThermalSplitstopsrunning.
 ErrorcodeisdisplayedonoutdoorunitmainPCBanduserinterface.

Possiblecauses
 Powersupplyvoltagenotwithin90%~110%ofratedvoltage.
 OutdoorunitmainPCBisdamaged.
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Procedure
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H7 

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Powersupplyvoltageisnotwithin
90%~110%ofratedvoltage
Yes
Providenormalpowersupply
No

ReplaceoutdoorunitmainPCB  
 
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