For the Power Pad not being centered can make the Green LED invisible from many viewing angles and dim when visible.
EXAMPLE


Pictures taken today on my 3020 panel
Thanks for the great ideas! Yes, I get the continuous circulation icon and I hear it circulating. So it *seems* to be working and I get hot water. But no green light.Bayliss said:Can you hear the boiler pump circulating glycol? Does the information on the Alde screen appear when you press the display panel power button, and does it display the continuous circulation icon (circle with arrows in the top left corner of the display screen)? If so, you have power and I am not sure what else to suggest, other than possibly a bad green power light.
Sorry I cannot provide a better answer, but there are a lot of brilliant minds on this forum. Presumably, your battery is charged, but when all else fails, often times it helps (like with computers) to cut off the power and "reboot".....shut off your battery cut-off switch, wait about 15 seconds, and then turn it back on. See if that does any good.
Thank you! Where do you buy your glycol from? Is it just standard "generic" anti-freeze?Bayliss said:@gkillmaster, I do not think there is any hard and fast rule on how often to check the glycol level, but it sounds like you are doing fine at a few times a year. Probably a good idea to do it before a big trip just for the reassurance. Gives you a chance to top off the tank as needed.
Thanks a lot @Bayliss. There sure are so many things to know about the T@B. Still feel like I'm at the very beginningBayliss said:@gkillmaster, the easiest way is to purchase the fluid through Amazon (I have a gallon on the way right now, just to have when I need it)..........Century Chemical TF-1 Transfer Fluid:
https://www.amazon.com/Century-Chemical-TF-1-Transfer-Fluid/dp/B01BDWQXM2/ref=sr_1_3?crid=14Z7M9RXIT2A4&keywords=century+chemical+tf-1+heat+transfer+fluid&qid=1556910128&s=gateway&sprefix=century+chemi%2Caps%2C189&sr=8-3
I sure will do! Not glad things can be confusing for you too, but glad I'm not the only one alsoBayliss said:@gkillmaster, I'm in the same boat (uh, RV)........I've owned trailers (15' up to 5th wheel) for 40+ years, but have spent soooooo many more hours on learning about my T@B camper, how it is constructed, the plumbing, etc. Some of the responses I have read about the Alde, in particular, tend to create confusion for me and cause me to second-guess whether I really understand how it operates. Therefore, I have been going through those posts slowly for the past few days to make sure I understand what the very helpful providers of that info are actually trying to convey. Making lots of notes for future reference when I have issues such as what you have experienced with the green light. I thought I had a pretty good handle on the Alde operation, but subsequent posts have muddied the waters for me personally, so today I am going through the Alde manual to fully understand its operation and compare its poor wording with my own experience with the system and what other T@B owners have provided by way of explanation. (By the way, once you resolve the green light issue, please be sure to let us know how you resolved it.........that is the best way for ALL of us to benefit. This is a FANTASTIC forum and I have learned a ton from it.) Greg
Somehow, the functionality of the systems could be great clarified with some good short videos. I wish T@B would put together a series for every system. The trailers don't really seem to change that much from year to year! So thankful for this forum and how generous people here are with their time! gkillmaster said:. . . no green light on the power button on the Alde menu control panel. It says in the manual that the led comes on when the boiler is on, but the green light never turns on to indicate this.
MuttonChops said:Are you 100% sure the indicator light (LED) is not on.
One trailer builder web-page has this comment:
Turn ON the Alde system by pressing the power button on the left. The power button has a little green light just right of center but you may need to look at it straight on to see it.

O Man! It does actually come on! I had to get my body in a weird position to be directly in front of it and was surprised to see that it was actually lit!! Thanks so much!MuttonChops said:MuttonChops said:Are you 100% sure the indicator light (LED) is not on.
One trailer builder web-page has this comment:
Turn ON the Alde system by pressing the power button on the left. The power button has a little green light just right of center but you may need to look at it straight on to see it.Another thing to consider when looking for the Green LED:The POWER & MENU touch pads are small plastic disks that have some free play in the Panel Housing. I am forever centering the Menu Pad - - - drives me crazy when it is not centered.
For the Power Pad not being centered can make the Green LED invisible from many viewing angles and dim when visible.EXAMPLEPictures taken today on my 3020 panel