My 4 years old LAARS boiler Makes whining noise when it's runing
Three days ago I hear the boiler whines when ever it's on, and I found out the expansion tank's diaphragm was perforated and it was replaced; however replacing the expansion tank did not fix it. And I think may be I did not bleed the system correctly. Please advice/ suggest of how to get the problem solved............. Thanks Expert
Pool & Spa - Teledyne Laars - HEAT EXCHANGER ASSEMBLY, DP-350 - 10403602
Answers & Comments
The tubes in the heat exchanger are most likely clogged with gunk, you can flush the boiler with tri-sodium phosphate. you must isolate the boiler from the system in order to acomplish this