RESISTANCE DHW TEMPERATURE SENSOR

Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4

Set Multimeter to Resistance

Disconnect the harness plug from the DHW sensor

Measurement:

Measure the resistance of the DHW sensor across its exposed terminals. The resistance measured will depend on the temperature of the sensor but should match the table below.

bx pt ecoblue h90608 thr dhw in situ.gif

Temperature Range (°C)	Resistance Range
0°C to 10°C	20.0kΩ - 32.0kΩ
10°C to 20°C	12.0kΩ - 20.0kΩ
20°C to 30°C	8.1kΩ - 12.0kΩ
30°C to 40°C	5.4kΩ - 8.1kΩ
40°C to 50°C	3.7kΩ - 5.4kΩ
50°C to 60°C	2.6kΩ - 3.7kΩ
60°C to 70°C	1.9kΩ - 2.6kΩ
70°C to 80°C	1.4kΩ - 1.9kΩ
80°C to 90°C	1.0kΩ - 1.4kΩ
90°C to 100°C	800Ω - 1.0kΩ

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