Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Disconnect plug X22 from the PCB
Measurement:
Measure the resistance between the two red wires (pins 14 and 15) going to the flow thermistor.
RESISTANCE OF FLOW TEMPERATURE SENSOR AND HARNESS
Resistances vary with temperature and should conform approximately to the table below:
| 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.
1
15
Isolate as per TOPs P4
and refit as necessary