Fisher & Paykel DD603 User Manual page 28

Where a Water Softener is fitted;
Set the Water Softener for the correct local Water
Supply hardness. Check that the Water Softener is
functioning correctly in Diagnostics;
C1 Water Softener Diverter Valve
In hardware output Diagnostics Test Mode
FU – turn the Fill Water Valve on
P2 – turn the Motor Drain on
C1 – Water Softener Diverter Valve
On – water bypasses the resin tank
Off – water flows through the resin tank
C2 Water Softener Brine Pump
Turn the Brine Pump on in Diagnostics mode.
Observe a small quantity of water (approx. 30 ml per
min.) flowing out the bottom of the dispenser. (Drop
the Dispenser Door down to observe this.) Observe a
change in the water level (approximately 120ml per 4
min.) in the Salt Reservoir. The Reservoir should
pump dry of water in this time.
Note:- Fill the Salt Reservoir with Salt (and then water
if not already) before performing this test.
Pipe Interrupter (Air Break) Function
A critical component in the performance of the Water
Softener is the pipe Interrupter (PI). There is a certain
amount of spray leakage from the PI which is used to
provide water to the Salt Reservoir.
If the spray is inadequate, there will be insufficient
water in the Salt Reservoir to make Brine.
If there is too much spray then the excess bypasses
the Water Softener and defeats the softening process
by pouring untreated water into the Tub.
To check that the amount spray leakage is
appropriate:-
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