Thanks... your tips lead me to watch some YouTube videos and do a little more research.
For example: This owner fixed the FLASHING LED LIGHTS PROBLEM by replacing a bulging capacitor on the control circuit board. So if you have to go this route, step one is to visually inspect your circuit board.
Well last winter we had trouble with the lights flashing and not going into operational mode. We would power it down then back on, change some of the knob settings until it would go into operating mode. Did a YouTube search for Splendide 2100XC flashing LED lights and a guy explained how he had fixed his board himself.
https://www.youtube.com/watch?reload...be.com%2Fwatch
He goes on to explain: I took the board out and found the capacitor he was saying caused his board to flash.
https://www.amazon.com/dp/B07C4XFX93...p_mob_ap_share