Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
CH Demand
Ensure rads are open and water can circulate around the system
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Allow boiler to fire and system start to heat.
Is the internal bypass tube approximately the same temperature as the flow pipe signifying the auto bypass valve is open?
