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Growatt 5000ES - Cant set Low DC cut-off voltage

Olasitu

New Member
Joined
Aug 6, 2022
Messages
43
Dear all,

My Low DC cut-off voltage is resetting and allowing only 42 V. This is a new situation. So not sure what is going on. The settings for the key parameters are:

1 Output source priority: To configure load power source priority– SUB
2 Maximum charging current: – 80A
5 Battery type – USE not USE2
11 Maximum utility charging current – 30A
14 Charger source priority: To configure charger source priority– SNU
19 C.V. charging voltage. – 56.4V
20 Floating charging voltage – 54V
21 – Low DC cut-off voltage 42V

#21 can be set to 47V if #5 is changed from USE. But I had successfully used USE and 42V as Low DC cut off.
I would really appreciate some feedback from people using USE and have Low DC cut off set to their preferred voltage please share your parameters. I believe USE has been the recommended setting for Battery Type for Growatt not using non BMS batteries.

My installation:
I have 2 Growatt 5000 ES installed in Parallel with 2 x Blue Carbon 48V 200Ah Lithium Battery Pack For Solar Home System. PVs are Mono 10 x 550W. 5 panels each in series to each Inverter. Priority is set to Solar, Utility and Battery.
 
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