Fisher & Paykel DishDrawer DD60 Service Manual page 31

4.12.2 Amount of Water
The tub fills with approximately 2.8 litres (3/4 gallon) of water.
The phase 9 model uses a new HYBRID filling system. This new filling system works slightly differently
to the older dynamic filling system by looking for a good consistent prime over a LONGER time period
(about 15 secs) and looks for this over a 40 sec period.
The initial fill will have up to THREE attempts to find
this prime, so the product will start and stop while
filling, and will initially look overfilled, as water will be
up to the bottom of the spray arm (this is normal).
If this prime is found then some EXTRA water is
added depending on which cycle was chosen and
washing starts. If not there is now a series of small fills
to CREEP up on the Prime to make the same decision.
This series of small fills gradually increases till this
prime is found, this is how LOW PRESSURE (which is
low fill rate) will accurately find prime as well.
So the series of short fills IS NOT a fault, but a
more robust detection process and will ensure the
product does not get any large overfills.
4.12.3 Flood Protection
A flood sensor is mounted in the base of the
product. It is housed in the plastic housing. The
flood sensor detects any water spillage and will alert
the customer to the flood by showing an E1 on the
display panel and will beep. The drain pump will also
run continously.
4.13 Heating
4.13.1 Heating Element
The heating element is a small circular sheathed
element with a stainless steel flat plate on the wet
side.
There are 2 thermal limiters to detect an element over
heat situation. These limiters are non servicable and
the element would need to be replaced should they
fail.
The element is held in place by by a cover and 3 torx
screws.
4 TECHNICAL OVERVIEW
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