BOSCH WAE 24164

[colly]

Hi guys

Been to look at this bosch machine today for fill error.

Machine only fills on any wash cycle for ten seconds then just stops with leds on and does nothing more.

I have changed one of the coils as only reading 8ohms.

Machine will fill and work if you fill it up on rinses then turn to any wash with the water in machine will function correctly .

Tried doing reset as in f21 in case this worked , but no.

Any ideas other than board ?

Cheers Colly . 😀

[Martin]

Re: BOSCH WAE 24164

colly wrote:Any ideas other than board ?

What’s the heater insulation like?

[colly]

Re: BOSCH WAE 24164

Hi Martin

I have put megger on comple machine, and have got a perfect reading.

Machine is only 2.5yrs old and used by elderly couple .

Colly

[Martin]

Re: BOSCH WAE 24164

But did you isolate the heater before meggering it?

[colly]

Re: BOSCH WAE 24164

Hi martin

No i did not do that .

As i said i put megger on the whole machine from the plug pins .

what you thinking ?

Colly

[Martin]

Re: BOSCH WAE 24164

colly wrote:what you thinking ?

Any potential earth leakage from (say) the motor or the heater would cause programme error such as this. Likewise if the heater were open circuit the same would apply so it’s important to megger these in isolation. 😉

[colly]

Re: BOSCH WAE 24164

Hi Martin

I will try this then

Cheers colly

[leavemetogetonwithit]

Re: BOSCH WAE 24164

colly wrote:
I have changed one of the coils as only reading 8ohms.

That’s rather a strange reading.
Wonder if it caused damage to the board?
Mike.

[keithwilliams]

Re: BOSCH WAE 24164

yes i would disconnect the heater and put the megger on it. the reason for this is that if it is wired so that both live and neutral are through relays then it will be out of circuit when meggering from plug.

[colly]

Re: BOSCH WAE 24164

Hi guys

Tried it and it’s fine

As I say once machine is filled on rinse machine then turned dial turned to wash cycle machine will work perfectly including heating the water rinsing and final spin . Then repeat with your next load of washing .

[leavemetogetonwithit]

Re: BOSCH WAE 24164

To me, it stands to reason that a triac “expecting” a 3K ohm load and suddenly finding itself presented with an 8 ohm load is going to fizzle and die if not actually exploding.
Have you looked at the board?
Mike.

[colly]

Re: BOSCH WAE 24164

Hi Mike
I have the removed board today

It clearly is a fault like you describe .(triac I feel )

However nothing to see on board blown etc .

Metered the harness to pressure switch and valve .

It needs a new board but customer is unwilling to have it replaced .

Will end up with machine for spares so will put in by till I get a used board.

Cheers for your help man .

Colly

[nomadPaul]

Re: BOSCH WAE 24164

it is possible to test the 2 valves individually in the test programme . As you seem to have worked out , I would say its the main wash valve that’s at fault (or its feed from the module ) In all honesty , in 6 odd years of working on these models , I’ve not known of a board failure with respect to the valves .

The fill sequence starts with an approx 5 sec fill into the pre-rinse chamber (far right) from IIRC the top valve , a short pause then continuation of filling VIA the lower valve into the left hand side chamber . If you’ve got that initial burst but then nothing , then that suggests main wash valve failure . This would be backed up if the flashing leds were the top and bottom spin speed lights .

I’d be tempted to try a new valve – 4283210 – just in case .

[colly]

Re: BOSCH WAE 24164

Hi
Changed the valve already, one coil was only reading 8ohms through it.

But still has not corrected fault.

I have never seen this fault either done this for 30 years.

Have had the wiring harness off and tested it and it is fine too.

Have changed the board across the valve also .

Cheers

colly

[leavemetogetonwithit]

Re: BOSCH WAE 24164

nomadPaul wrote:In all honesty , in 6 odd years of working on these models , I’ve not known of a board failure with respect to the valves .

How often have you seen a valve go practically short circuit?
Mike.

[Author]

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