Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
CH Demand
Gain access to terminal block
Measurement:
Measure the resistance (continuity) across the timer/programmer harness.
Connections are;
X1 connector pin 2 to pin 2 on terminal block.
X1 connector pin 3 to pin 1 on terminal block.
Expected resistance is continuity (zero resistance).
Note.
Ensure a good connection is made or misdiagnosis will occur.
Connections are;
Expected resistance is continuity (zero resistance).
Note.
Ensure a good connection is made or misdiagnosis will occur.
