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18.7 Printed circuit board (PCB)
Turn off and isolate electrical supply.
Remove interface cover by lifting the two
latches. (figure 33)
Remove the electrical connections to the
PCB, taking note of where the connections
are fitted, by releasing the clips and
carefully pulling off the connectors.
Release the 5 screws securing the PCB to
the control panel and lift out the PCB.
Fit the replacement PCB in reverse order
of removal, ensuring that the PCB
electrical connections are fully pushed
home.
Check that the on board adjustments to the
same value as the old PCB.
necessary, ref section 15.1.
28
18.8 Pump
The
dependant on the failure of the motor or
plastic body.
In case of motor failure:
Drain the boiler's hydraulic circuit as
detailed in 18.2.
Disconnect the screws connecting the
pump motor to the body, figure 34.
Pull out the motor and disconnect the
electrical connections from the pump cable
housing.
order
of
removal
is
Re-set as
Fit the replacement motor in reverse order
ensuring the correct polarity of the electrical
connections.
Figure 33
Open the isolating valves on the flow and
return connections, refill, vent and re-
pressurise the water system ensuring the pump
union joints are sound.
In case of body damage:
different
Remove the motor as described above.
Remove the secondary heat exchanger as
detailed in 18.9.
Remove the expansion vessel pipe by
releasing the clip on the pump body.
Remove the pressure sensor connection as
detailed in 18.16.
Disconnect the pumps outlet fitting.
Page 28
solaris 24PC, 30PC
Figure 34
Figure 35
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