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Re: Bosch wff 2000 sometimes failing to pump
Well I am going to do the same!
I had almost identical problems with my WFF2000GB/01 7603.
I couldn’t find why it cycled round the program dial without doing anything, stopped after a wash without doing the rinse and spin, sometimes at the start it took in the water and soap and then pumped it straight out again, other times when turned to spin it would work and pump. It often stopped with the pre-wash light blinking though we never use the pre-wash. The manual said if the prewash light blinks it may be a blockage in the pump or pump pipework, but as the pump worked I discounted that. I saw a post which said it might be the pressure sensor: I blew down the pipe and it seemed clear.
I did notice that the blinking occured in threes followed by a very short pause so short that I didn’t see it! Emailed bosch who sent a garbled list of 7 faults but with no mention of a blinking light. Fault 3 mentioned the pump. The posts in this thread led me to check things again!
1
The ‘filter’ box just before the pipe outlet had a lot of gunge in it which I part flushed out before soaking it in hot soda. It is a pig to get it off the machine – I found it best to remove the back and to work from the bottom pair of the four plastic clips. Even removing the hot and cold inlet valves arent obvious first time!
2
Removing the clear plastic pressure box I found that the opening to the space below the drum was nearly ‘blocked’ by ‘soap’ residue as was half of the 1″ opening into the box. Gave it a good clean out. It comes off easily being held on by two clips below the drum.
3
I removed the pump to give it a good clean – there was some soft residue but not much. Pity Bosch pop-rivett the cover over the base opening!
4
For good measure I also cleaned out the drain pipe.
A mole grip on all the steel pipeclips works well!All together again and everything working as new. Saved £200+ for a new, inferior build quality Bosch probably with a plastic rather than stainless steel drum and no hot water fill!!
