If the ALDE system is displaying that the glycol is heated, the problem is probably the regulator. You can bypass the regulator or replace it. To bypass, you need some pipe and Sharkbites (two connectors and one cap). First take a picture of the regulator connections for future reference. Cut the bottom white pipe going into the regulator and use a Sharkbite to cap it off. Next cut the two red pipes from the regulator and use a the pipe you bougth to make a connector (about 18"). Use the two shark bites to connect the red pipes together. All Done! You will get hot water now. You will still have cold and hot water. If you want a new regulator (ALDE THERMOSTATIC MIXING VALVE 3) go to
https://www.leisureshopdirect.com Part number 275385. It is $75.00 compared to $250 in US. Why? It is from England. The shipping adds another $75.00, but I still saved $100.00. Hope this helps.