Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove connector CN6 from the main PCB
Measurement:
Measure the resistance between pin 8 (Blue) and Pin 9 (Blue) on connector CN6.
The resistance depends on temperature and should conform to the table below:
The resistance depends on temperature and should conform to the table below:
| Temperature °C | Resistance in Kohms | 10-20 | 15.0 - 12.0 |
| 20-30 | 12.0 - 8.0 |
| 30-40 | 8.0 - 5.0 |
| 40-50 | 5.0 - 3.5 |
| 50-60 | 3.5 - 2.5 |
| 60-70 | 2.5 - 1.7 |
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Isolate as per TOPs P4
and refit as necessary