RESISTANCE THERMISTOR - FLUE 125K @ 21 TO 550 @ 200 DEG

Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4

Set Multimeter to Resistance

Disconnect CON10 from PCB

Measurement:

Measure the resistance across the white wires of the disconnected plug.
(note resistance of this thermistor is significantly different to flow & return)
The resistance varies with temperature and should conform approximately to the table below.

Temperature Range (°C)	Resistance Range
0°C to 10°C	210.0kΩ - 360.0kΩ
10°C to 20°C	125.0kΩ - 210.0kΩ
20°C to 30°C	80.0kΩ - 125.0kΩ
30°C to 40°C	51.0kΩ - 80.0kΩ
40°C to 50°C	34.0kΩ - 51.0kΩ
50°C to 60°C	23.0kΩ - 34.0kΩ
60°C to 70°C	16.0kΩ - 23.0kΩ
70°C to 80°C	11.0kΩ - 16.0kΩ
80°C to 90°C	8.0kΩ - 11.0kΩ
90°C to 100°C	5.9kΩ - 8.0kΩ

Note: Clicking on the resistance table will switch between table and graph view.