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Welcome to JustAnswer. I would like to try to help you.
Can you tell me which symbols light up on the display?
You can also send me a photo of the control panel and display. You can send me photos of the control panel and display with attachments in the bottom right corner of the TextBox.
I am waiting for your feedback. Greeting Erdal
All right then, I wish you much success with the device. Thank you and have a nice day. Stay well.