Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Measurement:
Remove the plug from the flow sensor and measure the resistance across the sensors pins.
RESISTANCE SENSOR TEMP FLOW
Resistances vary with temperature and should conform approximately to the table below:
| Temperature Range (°C) | Resistance Range |
|---|---|
| 0°C to 10°C | 19.0kΩ - 31.0kΩ |
| 10°C to 20°C | 12.0kΩ - 19.0kΩ |
| 20°C to 30°C | 8.1kΩ - 12.0kΩ |
| 30°C to 40°C | 5.5kΩ - 8.1kΩ |
| 40°C to 50°C | 3.8kΩ - 5.5kΩ |
| 50°C to 60°C | 2.7kΩ - 3.8kΩ |
| 60°C to 70°C | 2.0kΩ - 2.7kΩ |
| 70°C to 80°C | 1.4kΩ - 2.0kΩ |
| 80°C to 90°C | 1.1kΩ - 1.4kΩ |
| 90°C to 100°C | 800Ω - 1.1kΩ |
Note.
Clicking on the table will switch between table & graph
Clicking on the table will switch between table & graph
Isolate as per TOPs P4
and refit as necessary