XSol Diagnostic System

RESISTANCE SENSOR DHW AND HARNESS

Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4

Set Multimeter to Resistance

Disconnect connector X2 from the PCB

Measurement:

Measure the resistance between pins 1 and 2 (red wires) on X2 connector.
Resistance should conform approximately to the table below.

id mini c24 he h32574 har x2 connector.gif

id mini c24 he h44169 pcb in situ.jpg

@preddrs.gif

@pblackdown.gif

1

11

Temperature Range (°C)	Resistance Range
0°C to 10°C	27.0kΩ - 18.0kΩ
10°C to 20°C	18.0kΩ - 12.0kΩ
20°C to 30°C	12.0kΩ - 8.4kΩ
30°C to 40°C	8.4kΩ - 6.0kΩ
40°C to 50°C	6.0kΩ - 4.4kΩ
50°C to 60°C	4.4kΩ - 3.2kΩ
60°C to 70°C	3.2kΩ - 2.4kΩ
70°C to 80°C	2.4kΩ - 1.9kΩ
80°C to 90°C	1.9kΩ - 1.5kΩ
90°C to 100°C	1.5kΩ - 1.2kΩ

Note: Click on resistance table to switch between table and graph view.