Midea M-Thermal Series - Page 52

  M‐ThermalSplit 
20190951
4.7 F1Troubleshooting
Digitaldisplayoutput
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Description
 LowDCgeneratrixvoltage.
 M‐ThermalSplitstopsrunning.
 ErrorcodeisdisplayedonhydronicsystemmainPCBanduserinterface.
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Possiblecauses
 TheDCgeneratrixvoltageistoolow.
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Procedure
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F1
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
Powersupplyisabnormal.
Yes
Providenormalpower  
No

LEDontheInverter
Modulesislighting

Yes
VoltageofPNis380V.
Yes
Checkthemainboard.
No

Theinputpowerof
invertermoduleis
abnormal

Yes
Themainboardis
damaged,changeit.

No

Theinvertmoduleis
damaged,changeit.
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Midea CAC Confidential