2
Figure 1 Internal components
Figure 2 Wiring diagram
Fixing Lugs
Thermal cutout
Printed Circuit
Board (PCB)
Front cover
Heat
exchanger
Water
control valve
Outlet pipe
Pressure relief device
Removable
bottom
section
Inlet spigot
Fixing lug
Alignment
post
Drain slot
Solenoid
valve
L & N
terminal
block
Earth
terminal
block
Back plate
N L
red
green/yellow
black
Cut
Out
Terminal
block
red
Inner
container
brown
white
black
red
white
red
red
red
red
brown
LH
RH
white
Pressure switches
PCB
Solenoid
black
19
REMEDY
A. Switch off shower and isolating switch. Renew fuse or
reset mcb. If they operate a second time, contact a
qualified electrician.
B. Follow the same procedure as above. If this has
happened with a ‘split load’ consumer unit on initial
installation, check that the neutral core of the shower
feed cable is connected to the ‘protected’ neutral bar
of the unit.
A. Descale handset as described in 8.5. Reset the timer
as described in 5.56.
POSSIBLE CAUSE
A. Cartridge fuse or
miniature circuit
breaker (mcb) has
operated in your
fusebox (or
consumer unit) or
switch fuse.
B. Residual current
device (rcd) (or
earth leakage
circuit breaker)
has operated.
A. Handset needs
descaling.
SYMPTOM
6. “Low Flow”
indicator not lit.
Isolating switch
“On” but its
neon not lit
.
7. ‘Inspect Handset’
warning light
flashes.
Where a fault cannot be corrected by
either yourself or your installer, contact our
Service Department, (address and phone
number below), who will try to help over
the phone. If necessary, they can arrange
a visit by one of our service engineers.
We find that the vast majority of problems
can be solved by reference to these fitting
instructions or by discussion over the
phone. In the event that our engineer is
called and finds that the fault is caused by
faulty installation or usage, or lack of
reasonable maintenance, a call-out
charge will be made.
