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Rinnai R85i stopped igniting
We've had our Rinnai R85i unit installed since 2007 without a fault. We have loved this unit. Recently we noticed that the hot water wasn't as hot as it should be. Background info--the installer did not install the flush valves. I finally made time to install them myself. Fast and easy. Turn water back on purged air from lines, turned on hot water tap and ZILCH. I called CS and they explained how to check the flow via the control panel. It reads 0. The tech then told me that I must have a faulty water flow sensor and water flow servo. I ordered the WF sensor yesterday (arrived today). I've installed the new unit and still no flow being read. I found out after the fact that the WF servo is a separate item to purchase (I thought it was all one unit). It is due to arrive tomorrow (overnight shipping). My question is two-fold: 1) what are the odds that installing the flush valves actually made the unit fail, 2) if the WF servo still doesn't solve the problem what is my next option? Had 11 and 12 error codes. The unit has had a few instances were it didn't light, but rarely at best.
Thanks for any and all help!