Heat Exchanger Thermistor - Rinnai Sensei N-Series Service Presentation

Heat Exchanger Thermistor

When measuring resistance always make sure the power supply to the unit is turned off and the
component being check is isolated from the P.C. board.
1. Measure resistance of Heat Exchanger Thermistor on the P.C. board at Connector H):
a. Connector "H" white wire pin #2 (turns black at P.C. board) & white wire pin #6.
© 2015 Rinnai America Corporation
PROPRIETARY and CONFIDENTIAL
Enhancing Lives By Changing The Way Water Is Heated
63
Resistance Values
59 ˚F = 11.4 ~ 14K ohms
86 ˚F = 6.4 ~ 7.8K ohms
113 ˚F = 3.6 ~ 4.5K ohms
140˚F = 2.2 ~ 2.7K ohms
221 ˚F = 0.6 ~ 0.8K ohms
11/6/2018