Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Set Multimeter to AC Volts Set meter to measure AC Volts
Gain access to diverter valve terminal block
Remove connector to diverter valve motor and leave in a safe place
Ensure no demands are present
WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure

Measurement:

Test 1. Reinstate power to appliance, as self test function starts measure for A/C voltage across
the Black terminal (diverter terminal block) and terminal 2 (blue) main terminal block.
Expected voltage sequence should be 240vac drops to 22vac rises
to 240vac then drops again and stays at 22vac.
Mains power OFF
Test 2. Repeat Test 1, but this time measure for A/C voltage across the Blue terminal (diverter terminal block) and terminal 2 (blue) main terminal block, expected voltage sequence should be the same.
Note.
1. It may take several attempts to confirm voltage sequence, as it is only present
for approx 15 seconds at start of self test, repeat tests 1 & 2 until test is complete.
2. Terminal 1 of main terminal block is the top connection when facing appliance front.