Hotpoint Aquarius WD420G, Информация о сервисе

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Controls Information
A single control board located at the back of the machine contains all the circuitry to control the
machine and interfaces with the programme selector, option buttons and LEDs located on the
console panel. The control board has an access port to the rear of the machine to enable
programming and diagnostic checks to be carried out.
Programmes are selected by turning the rotary switch to one of the 16 positions a rotary switch.
Special options can be selected by pressing the appropriate buttons and the programme process
followed by LEDs.
The machine is switched on using the On/Off button and selected programmes started by pressing
the Start/Cancel button.
Automatic Features
Auto Half Load
Auto half load adjusts the amount of water in the wash load depending on the absorbency of
garments in the wash load.
Fabric Conditioner Dispensing
Dispensing of fabric conditioner is achieved by energising both the Pre-Wash and Main Wash cold
valves.
Out of Balance Protection
The machine has an inbuilt feature to prevent spinning with an unbalanced load. A calculation via the
motor tacho and control board detects the current drawn by the motor during distribution.
Before each spin, the controls senses the load within the drum and if the load is calculated to be out
of balance the machine will not automatically spin to the full speed.
There are two levels of out of balance, level 1 @ 480 grams and level 2 @ 1030 grams.
If the out of balance is below level 1 the machine will spin at full speed, if between level 1 and level
2 the machine will spin at the reduced speed of 600 rpm and above level 2 spin at reduced speed of
400 rpm. There are 15 attempts at level 1 with 57 attempts in total, this being the same for both cotton
and synthetic spins.
The wool spin has one level of out of balance @ 1.8 kg. The controls will make three attempts to
achieve a balance, if after three attempts a balance is not achieved; the spin is reduced to a speed
of 90 rpm.
The Condenser Tumble Drying Process
The drying process is by means of a closed air system driven by a circulating fan. Air is drawn
internally from the rear of the outer drum, passed over a heating element and returned to the front of
the drum via an inlet through the door seal. The warm air travels through the wash load collecting
moisture, the moist air then condenses on a stream of cold water running down the inner rear section
of the outer drum. The relatively dry air is then drawn back over the element to repeat the process.
The circulating fan, one shot cut-out or thermal fuse cable along with a thermistor to control the air
temperature are located in a heater box assembly attached to the top of the outer drum.
The airflow passes through a filter located within the air duct from the outer drum to the heater box
assembly. At the start of every drying program the filter is automatically cleaned by flushing water
through it by means of a fill valve wired in parallel with the hot fill valve for 5 seconds duration.
On products produced from April 2005, Date Code 40, the filter flushing hose was deleted.
On products produced from May 2006 (S/N 60508.0000) the flushing valve system was
re-introduced, but now controlled by the Eeprom using a separate valve located next to the fill valve.
See Notes on page 4.