I am hearing my Alde system gurgling, so I checked the expansion tank. I found that the fluid was at the minimum mark and the filling cap could not be screwed on very tightly. The threads on the tank [or cap] appeared to be stripped. I can certainly pour more glycol in the tank, but I am concerned about having the cap be securely tightened. I didn't find any leakage; however, it may have evaporated. Any ideas on what is going on and some solutions?
Just some background information: I had my [email protected]
320 in for service at the dealership and to have the Alde system to be repaired. Well, the dealer fixed the Alde hot water problem but not the heating. I had to take it back. The dealership seemed to solve the heating problem by filling the glycol tank. Apparently, the tank was empty. I have had my [email protected]
for just over 2 years, so it sounds like the glycol should be replaced.