Home Repair Manuals Hotpoint WMA32 Dismantle & Repair
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2.2 Pressure Chamber (Old & new)
New
Old
Attributed faults
•
Overfilling
•
Will wash but Not Spin
•
Will go straight into wash without any
water
•
Heater comes on without any water
Pressure Chamber
The Pressure chamber is situated at the rear of the container just to the side of the motor,
and is an integral part of the sump. It is connected to the pressure switch by means of a
thin hose. Air is trapped in the chamber as the machine fills with water and is forced up
the hose, (the more water the greater the pressure) until the pressure inside the hose
triggers the switch and so turns off the fill valve.
Blockages are the main cause for concern with the pressure chamber and they happen
because some of the grime and excess detergent build up in the base of the machine
then gradually work into the chamber where it forms layer upon layer until it
gradually blocks the small hose outlet.
The only effective way of cleaning the chamber is to remove the sump/pressure
chamber and wash it out thoroughly under running water. Do not think that blowing
down the pressure pipe will do the job. (That will only work for one or two washes
before it blocks again).
If you are still getting trouble after replacing the sump/pressure chamber, it could be
air escaping through one of the hose connections; put cable ties on both ends of the
pressure hose and tighten.
