More web kudos

We have had our Rinnai heater for over ten years and it has served us very well. However, the temperature sensor always produced temperature readings that were 8-12 degrees lower than the actual temperature in the room. Therefore I was using a "snuffleupagus" made of a dryer vent pipe to conduct air from the front of the heater to the thermistor, which was mounted at the rear, near the floor. That would fool the sensor and would cut off the heat, but it did so inefficiently and one of our residents objected to the pipe on the floor.
Although it took me many years, I finally remembered that problems are not unique, and very likely someone would have faced and solved the problem of inaccurate temperature readings in the Rinnai. Indeed. It did not take long to find a solution on the web. I took the thing apart, cleared out the cobwebs, unrolled the thermistor wire, unmounted the thermistor, and placed it higher and outside the heater, away from wall and floor. Now it reads perfectly and the heat is perfectly regulated. Duh. Don't forget the Internet, folks.