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sorts got a reaction from CobusK in Deye inverter screen and logger not working (Installer MIA - advice needed pls)Thank you so much, guys. I have removed that connection, and the screen and rs485 communications are working again.
Happy new year from Valencia, Spain.
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sorts reacted to CobusK in Deye inverter screen and logger not working (Installer MIA - advice needed pls)This is the logger module. Unplug the white multi-pin plug from the board. If the LCD comes to life, the board is US. It is normally the C9 resistor that goes. The replacement board is about R250.00 from Deye service centre. I just replaced a couple.
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sorts reacted to TaliaB in Deye inverter screen and logger not working (Installer MIA - advice needed pls)Faulty internal auxiliary power regulator
Inside the Deye there’s a small low-voltage regulator module that powers: LCD screen, RS485/BMS/COM board, microcontrollers and logic supply rails. If this regulator is unstable or failing, you will see screen flickering / dimming / dying and or communication chips reset or die and BMS communication fail resulting in no battery charging.
Main inverter still runs (because main power stage has separate supply)
This is extremely common on units 1–3 years old that see heat cycling. If the inverter are still under warranty log repair, replacement by your installer or supplier. Do not attempt to fix this yourself unless you do have the skills but opening the inverter will void your warrenty.
