Fisher & Paykel DishDrawer DD247 Service Manual page 26

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4.1.3 Water Supply Hardness Setup (hd)
The current supply hardness setting is shown using the red LEDs on the touch switch panel. One of five settings
should be selected according to the known hardness of the supply water.
DishDrawer Setting
No LED
1 LED
2 LED
3 LED
4 LED
5 LED
NOTE: No LED = Water Softener turned off, continuous bypass of softener
Push KEYLOCK to advance the Water Softener setting. Once the desired setting has been achieved, push
POWER to exit.
Selection of a setting affects how the electronic controller diverts supply water, how much water is treated, and
how much salt is used in regeneration, in a manner that optimises the performance of the water softener.
Grains per Gallon
0-6
6-14
14-20
20-26
26-32
32-36
Parts per Million
0-150
150-250
250-350
350-450
450-550
550-625