Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Hinge down the PCB housing
Remove Blue Jumper CN11 if present
Gas ON
Remove Blue Jumper CN11 if present
Gas ON
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
The Blue jumper CN11 controls the ignition fan speed (see information below):
Blue Jumper - CN11 - Minimum Rate Ignition
If the blue jumper (CN11) is removed then the boiler will ignite at minimum fan speed.
The fan speed will be reduced from 2800 rpm to 1900 rpm which will in turn reduce
the ignition gas rate. Removing this jumper may help appliances with hard ignition.
With the Blue jumper removed run the appliance and see if ignition has now improved.
Has the ignition improved with the jumper removed?
Note:
If the jumper had already been removed select the outcome "ignition has not improved" below.
Blue Jumper - CN11 - Minimum Rate Ignition
If the blue jumper (CN11) is removed then the boiler will ignite at minimum fan speed.
The fan speed will be reduced from 2800 rpm to 1900 rpm which will in turn reduce
the ignition gas rate. Removing this jumper may help appliances with hard ignition.
With the Blue jumper removed run the appliance and see if ignition has now improved.
Has the ignition improved with the jumper removed?
Note:
If the jumper had already been removed select the outcome "ignition has not improved" below.
Isolate as per TOPs P4
and refit as necessary