Troubleshooting
3
Subject to modifications resulting from technical improvements!
Buderus Ltd. • http://www.buderus-domestic.co.uk
Servicing manual for wall-mounted condensing gas boiler 600 Series 11S/19S/24S/24C • Issued 02/2006
59
3.1.24 Checking the
hot surface ingitor
z
Disconnect the system from the power supply.
z
Loosen crosshead screw on UBA housing.
z
Swivel UBA housing downwards.
z
Open the UBA housing.
z
Unplug and remove hot surface ingitor from UBA housing
(fig. 73).
z
Check hot surface ingitor for free throughput.
If throughput is free, the hot surface ingitor is in order.
z
If the hot surface ingitor is in order, plug the cable into the
UBA housing.
z
Shut the UBA housing.
z
Swivel the UBA housing upwards and screw into place.
z
Connect system to mains power supply.
3.1.25 Replacing the
hot surface ingitor
z
Disconnect the system from the power supply.
z
Remove combustion-chamber cover.
z
Remove the earth (ground) lead from the hot surface
ingitor (fig. 74, item 1).
z
Loosen crosshead screw on UBA housing.
z
Swivel UBA housing downwards.
z
Open the UBA housing.
z
Unplug hot surface ingitor connection cable from UBA
housing (fig. 75).
z
Loosen nut on clamp used to secure earth (ground) lead
(fig. 74, item 2).
z
Detach retaining plate of hot surface ingitor (fig. 74, item 3)
and remove hot surface ingitor.
Fig. 73 Checking the
hot surface ingitor
Fig. 74 Replacing the
hot surface ingitor
1
2
3
Fig. 75 Disconnect the plug-in cable from the UBA housing
