Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to AC Volts 
Remove the Programmer from the wall and on its back plate
Fit a link between the mains live and the Hot Water on terminals of the Programmer back plate Ensure the link you have fitted is safe then refit the Programmer to its back plate
Fit a link between the mains live and the Hot Water on terminals of the Programmer back plate Ensure the link you have fitted is safe then refit the Programmer to its back plate
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
This link will bypass the Programmer and provide a demand for hot water
regardless of the Programmers setting, however, the cylinder thermostat
will still control the water temperature so must be calling during this test.
Measure the voltage on the Brown wire to the Hot Water zone valve:
1. Is mains voltage present?
2. If voltage is now present on the brown wire does the valve
move to the open position?
Once test is completed remove the link.
Note: The colour and position of the wires will vary between systems and components.
regardless of the Programmers setting, however, the cylinder thermostat
will still control the water temperature so must be calling during this test.
Measure the voltage on the Brown wire to the Hot Water zone valve:
1. Is mains voltage present?
2. If voltage is now present on the brown wire does the valve
move to the open position?
Once test is completed remove the link.
Note: The colour and position of the wires will vary between systems and components.
