Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
CH Demand
Selector Switch to Hot Water and Heating
Appliance CH thermostat set to MAX
Attach temperature clamps to flow and return pipes as indicated by the red arrows
Appliance CH thermostat set to MAX
Attach temperature clamps to flow and return pipes as indicated by the red arrows
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Allow boiler and system to heat.
Does the boiler have a temperature differential of approximately 20°C or less?
Does the boiler go to lockout again?
Does the boiler have a temperature differential of approximately 20°C or less?
Does the boiler go to lockout again?
