I have a Lochnivar plus Knight wall mount boiler control module. It provides hot water to two hydronic radiant floor loops and the exchanger in the domestic hot water tank. It was working well for the first couple of years. Now the only defect is this: for a couple of years it is making loud explosive bangs at moments I can't predict. I recently sat next to it for 5 hours waiting in vain for a bang so I could see what the control screen said. Within a day it made 3 or 4 bangs in a half hour stretch while I was elsewhere in the house.
I called in the installing business but found out my installer was no longer working there, and the new person seemed to find nothing wrong. That business is not functioning any longer. I have the service manual, but of course user access to the settings is almost nonexistent; it allows only installer access.
Banging like that feels like something too hot encountering cold. This phenomenon is way worse in winter. What should I do?
I called in the installing business but found out my installer was no longer working there, and the new person seemed to find nothing wrong. That business is not functioning any longer. I have the service manual, but of course user access to the settings is almost nonexistent; it allows only installer access.
Banging like that feels like something too hot encountering cold. This phenomenon is way worse in winter. What should I do?
