Fan - Baxi EcoBlue Heat 12 Installation And Service Manual

Fig. 53b
Press the tab to
Fan Protective
hinge down the
Cover
Fan Protective
Cover
Electrical
Plug
Fig.53c
Fan Driver
PCB Screws
Locating
Pins
Retaining
Clip
Fig. 53e
Manifold Securing
Screws (4 off)
View from
behind
Combustion
Control Unit
Gas Valve
Securing Screws
Fig. 53g
'O' Rings
7219717 - 02 (08/15)
Fig. 53a
Gas Inlet
Pipe
Main PCB
Screws
Fig. 53d
Manifold Gasket
Fig. 53f
Fan Gas
Supply Pipe
Gas Valve
Securing Screws
Fig. 53h
10.3.14 Fan (Figs. 53a to53h)
A Phillips PH-1 & T25 Torx screwdriver are required.
T20 Torx key & ESD wrist strap are supplied.
Remove the ducts as described in Section 10.3.4
1. Disconnect the cable from the bottom of the PCB and break
the mains power cable connection at the right hand side of the
housing.
2. Disengage the fan protective cover tab and lower the cover
slightly (Figs. 53a & 53b) and remove the "Socket & See"
electrical test point cable from its PCB edge connection. Slide
the "Socket & See" electrical test point from its location and
lower the cover fully.
3. Wearing the ESD wrist strap, disconnect the electrode lead,
earth lead and the main sensor harness from the PCB, taking
care not to touch any of the PCB components.
4. Disconnect the electrical plug from the gas valve (Fig. 53c)
and remove the screws securing the fan driver PCB to the fan
motor (Fig. 53e). Note the 2 locating pins that align the PCB.
Push the retaining clip to the right and disengage the fan driver
PCB.
Fan driver PCB is permanently wired to the main PCB.
5. Undo the screws securing the main PCB to the fan (Fig. 53d)
and remove it, including the fan driver PCB.
6. Undo the nut on the gas inlet pipe (Fig. 61c) at the base of
the valve and the four manifold securing screws (Fig. 53f).
Remove the cover by rotating through 180° and sliding to the
right. The fan & gas valve assembly can now be removed.
Manifold
7. Remove the screws securing the gas valve to the fan (Fig.
53g). Lift the valve from its seat and pull it gently downwards to
release it from the fan assembly.
8. The new fan and gas supply pipe can now be fitted. Lubricate
the new 'O' rings (Fig. 53h) with the grease supplied. Assemble
the gas valve to the new fan taking care not to damage the 'O'
rings.
9. Reassemble in reverse order of dismantling, checking all
joints tight and wires are secure.
10. When connecting the fan driver PCB to the fan use the
locating pins to align it, and do not force the connection. Ease
the retaining clip to the right to aid assembly. Ensure that the
wires connecting the fan driver PCB to the main PCB do not
touch the cover.
11. Reinstate the gas and electrical supplies and recommission
the boiler.
Maintenance 10
EcoBlue Heat 55