Set Appliance State:

Mains Power Off
Turn Hot Water Tap On
Mode Selector Switch to DHW position
WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure
Mains Power On

Observation:

Does sparking stop immediately after Main Burner ignites?
Fail if sparking continues after burner ignition and/or Lockout LED lights.
Note:
Turn mode selector switch to Lockout/Reset position if required after test.