TM090 12-26 Series II CFGWH Service Instructions
REV AB – Issued February 2019
This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed “uncontrolled”
Tests 4-7
Test 5 – Cold Inlet thermistor
DC5V -50V Normal fan voltage operating
range (No.3 Black to 1 Red).
DC9V -15V Normal fan voltage operating
range (No. 3 Black to 4 Orange).
DC4 -10V (or measurement by pulse counter of
not less than 4800 pulses per minute) 3Black -
5Yellow
Normal operating resistance is 4.9 kilo
ohms at 40 ºC and 10.3 kilo ohms at 20 ºC
between 10 White and 9 Black
Test 6 – Heat exchange thermistor
Test 7 – Hot outlet thermistor
Normal operating resistance is 4.9 kilo ohms
at 40 ºC and 10.3 kilo ohms at 20 ºC
between 14 Green and 9 Black
Normal operating resistance is 4.9 kilo
ohms at 40 ºC and 10.3 kilo ohms at 20 ºC
between 15 Blue and 9 Black
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