Specific Maintenance Instructions; Detection/Spark Ignition Electrode; Ntc Flue Sensor - Main Eco Compact Combi 25 Installation And Service Manual

9.3

Specific maintenance instructions

Fig.53 Panel removal
Fig.54 Remove detection/spark ignition
electrode
Fig.55 Remove NTC flue sensor
Warning
When changing components ensure that both the gas and electri­
cal supplies to the boiler are isolated before any work is started.
When the component has been changed recommission the boiler.
Always examine any seals or gaskets, replacing where necessary.
The case font panel MUST seal effectively against the boiler side
panels.
To remove the case front panel proceed as follows:
Unscrew the two screws located on the bottom of the front panel.
Slide the bottom of the front panel forward and lift upwards to disengage
the panel.
Hinge down the control panel.
PN-0000323
9.3.1

Detection/spark ignition electrode

1. Disconnect the electrode lead and earthing cable.
2. Using a T15 Torx key, remove the retaining screws securing the
electrode to the combustion chamber door and remove the elec­
trode, noting its orientation.
3. Fit the new electrode with the sealing gasket.
4. Reassemble in reverse order.
PN-0000331
9.3.2

NTC flue sensor

1. Turn the sensor 90° anticlockwise to remove — it is a bayonet con­
nection.
2. Ease the retaining tab on the sensor away and disconnect the elec­
trical plug.
3. Fit new sensor and reassemble in reverse order.
PN-0000332
9 Maintenance
57