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New Lochinvar Knight Installation
I had my boiler and hot water heater replaced about 6 weeks ago with a Lochinvar Knight/Squire modcon and indirect hwh. I selected a contractor to install the system from a neighboring community (approx 35 miles away) rather than one from my community for a variety of reasons. I am very pleased with the overall installation.
The boiler (WBN106) worked fine for several days but then began to lock out due to a “Flue Temp Diff” error requiring manual reset. This happens anytime the boiler runs at 100% for more than about 5 minutes as best I can tell. This means I have to reset it multiple times a day, basically whenever there is a call for hot water. The boiler seems to work fine in space heating mode. I assume this is because the demand is low enough (boiler never even approaches 100% right now for space heating) so that the problem doesn’t arise.
My boiler was one of the first Lochinvar’s with the new Smart Control installed locally and I understand they had some issues with the flue temperature sensor and/or control unit. Within a few days of the problem my contractor informed me that Lochinvar was aware of the problem and was sending the necessary replacement parts. In the next couple of days the contractor came by and replaced the parts, first the user interface control and then the flue temperature sensor. Unfortunately this did not fix the problem. I called my contractor, who got back to me that Lochinvar was aware that there were still problems and would be sending up still another replacement part (I think the interface control) to fix it.
After about three weeks, I still had not heard anything from the contractor so I called them. I was told that the part was in, but that they were busy on jobs in their local area, and basically they couldn’t make time to come to my location and put the part in. They called back and said it would be another week before they could come by to put the part in.
My questions are first, have others had similar issues with the Lochinvar Knight? Lochinvar seems to be responsive but I am concerned about future problems when my space heating is critical. Secondly, although I like my contractor, I can’t help but feel that he should have made more of an effort to fix this in a timely manner. Am I expecting too much? Again I am concerned about his response when we are deep in the heating season and the boiler has a problem.