19
Pump will not star
t
Pump will not stop
Set ‘Pump Speed’
and ‘Auto Sense’
settings
No further action
Repeat Set up. If pump
does not turn of
f replace
control unit.
Does Pump stop when water is turned of
f?
Has pump speed been set?
The ‘Pump Speed’
must be programmed
(by adjusting speed using up and down
arrows and programming in value by holding
down the mode key) before the
Auto Sense
of
f delay is programmed.
When power is switched on the LED’
s on the
control unit will all illuminate.
The software version
will then be shown on the two digit display briefly
before two digit display will alternatively blink on
and of
f.
T
urn shower on
Does Pump Start?
Follow
Set up
instructions
Check cable and
connections to pump.
If no voltage on pump
terminals. Replace
Control Unit
If voltage on pump
terminals check polarity
on pump.
Check connections on
sensor
.
If still no indication with
water flowing replace
flow sensor
.
2 Digit display should
indicate ‘1’
in first digit for a
sensor in ‘FS1’
connections
and ‘2’
in second digit for a
sensor in ‘FS2’
connections.
Is sensor shown on
2 digit display
Is there power on
control unit?
Check power is
switched on to
Control Unit.
Check power
connections on
Control Unit.
Check internal fuse
in Control Unit.
Press MODE
Button once.
LED shows
AS
(Austo Sense)
No
Y
es
Y
es
No
No
Y
es
Y
es
No
What is the fault?
Pump does not pump pr
operly
Check flow rate
of shower
.
The pump is
capable of
8 ltrs/min on
15mm (electric
showers only) or
12 ltrs/min on
22mm (mixer
showers only).
If the flow rate is
exceeded it must
be reduced.
Check the
tricuspid valve on
pump discharge
is closed and
undamaged.
Ensure fittings
are locked and
airtight.
Ensure inlet or
outlet pipework is
not blocked.
Remedy any
problems.
Strong
suction is felt
Low or no
suction is felt
Suction is
i
ntermittent
Check suction at pump inlet.
Strong suction
felt
Inlet pipe is blocked
when debris, usually
a screw cap, pivots
in the pipe vertically
to block it. Once the
pump stops it falls
horizontal and allows
the pump to suck
when used next.
Rod or blow back
down the inlet pipe
until debris appears
in the gulley
.
Low/ no
suction felt
Remove pump head by removing the
blue retaining clamps. Examine the
inlet and outlet flap valves for traces of
hard debris such as grout. W
ash out
debris and ensure the valves are
seated correctly
. Check diaphragm is
undamaged.
These rubber parts are
contained in Service Kit
AK1550.
Check the tricuspid valve
on pump discharge is closed
and undamaged.
Ensure fittings are locked
and airtight.
Ensure outlet pipework is
not blocked.
Remedy any problems.
Does this solve
the problem?
Y
es, no further
action
Ensure that no hair or debris blocks the gulley
.
Assess the suction at the waste fitting in the
tray by placing your hand over it or over the
gulley hole.
No
Dr
y Deck 20 Fault Diagnosis Char
t
