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Must PV1800 VHM stuck in bypass


Kratos

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Hi all, so posting here in case someone else experiences similar issue and also to verify my settings are correct since im complete noob so setup based on manual and forum feedback.My setup is 8* 360 watt panels , Pylontech UP5000 and Must pv1800 vhm.

The settings that i used to get out of bypass as follows

01 : output source: SBU this was on UEi

02:UPS not sure if this is correct

05 :Solar supply priority: LBU - this is what was stopping it from moving off bypass since it was set to BLU and was trying to reach field 21 voltage which was impossible.So LBU looks at field 20 which I set to 48V based on forum feedback.

10: changed from SNU to CSO to maximise solar panel usage.

11: default but not sure if its correct

14: Changed from LI to USE since it was ignoring fields 17,18,19 settings could be a bug but i dont know of this impacts charging profile for battery.

Need pylontech gurus to confirm if 17 to 21 settings are ok field 20 determines bypass mode or not. @Coulomb

17: Bulk :53.2

18:Float : 52.2v

19: low dc cutoff voltage :47.5 let me know if this is right for the battery also

20: Stop discharge when grid available:48v need to check if this is right.

21: Battery stop charge when grid available: 53v

Special thanks to @jumper  and @Scorp007 

 

Thanks

 

 

Edited by Kratos
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