Hotpoint BWD129 – energising drying solenoid all of the time

[neon_3SP_glow]

Having a bit of a mare with this one 🙁

Hotpoint – BWD129
s/n – 801178766 80332140905

Visit 1
The machine has blown the house trip. Turns out the heating element (wash) has gone down to Earth, causing a big blow on the module PCB. Sends PCB to EMW for repair.

Visit 2
Replaced heating element and re-fitted repaired PCB. Machine powers on but all LED lights are lit constantly. Advised by EMW this is due to facia PCB chip failure. Sends facia PCB to EMW for repairs.

Visit 3
Fitted facia PCB repaired by EMW. Machine powers on and starts up fine, but wait, what’s that buzzing noise? The light blue coloured solenoid that feeds a drip of water to the drying chamber is energised.
Even after turning the machine off the soenoids is still energised and letting in water. The only way to stop it is by pulling the plug. This occurs no matter what prog. selected.
Returned PCB module to EMW.

Visit 4
Fitted PCB module repaired by EMW and still the problem persists.

Any ideas? many thanks in advance guys. Tired of this one now.

[Martin]

Re: Hotpoint BWD129 – energising drying solenoid all of the

neon_3SP_glow wrote:Visit 4
Fitted PCB module repaired by EMW and still the problem persists.

Any ideas? many thanks in advance guys. Tired of this one now.

Ultimately the boards control the components so I’m thinking you must have a board fault. EMW would surely be the best to advise you on this. My knowledge of PCB’s only based on hard knock experience and whenever I’ve had a inlet valve energised all the time it’s been a duff module board! (Not had such a fault on these crap built-in dryers mind you but wouldn’t be the least bit surprised) 😉

[neon_3SP_glow]

Re: Hotpoint BWD129 – energising drying solenoid all of the

EMW are adamant that the newest board sent to me is not faulty. This really only leaves the connector block and the loom to the solenoid as potential culprits.

It appears either a stray voltage is tracking through the connector block or the loom has rubbed through and the solenoid is completing its circuit there!

I will update after mondfays planned visit.

[loopey]

Re: Hotpoint BWD129 – energising drying solenoid all of the

its got be the soleniod on the valve , check the resitance value
had a melted one do the same fault ..

phil

[jonnieboy]

Re: Hotpoint BWD129 – energising drying solenoid all of the

had the exact problem last week same model and it was the main board think the part no was CO0254298

[electrofix]

Re: Hotpoint BWD129 – energising drying solenoid all of the

have you checked the voltage reaching the valve

sounds like a triac fault on the pcb.
since a valve does not need a lot of power a leaking triac will allow just enough power to open valve. normal voltage is 240 but commonly 110v if you get leakage

Dave

[Martin]

Re: Hotpoint BWD129 – energising drying solenoid all of the

jonnieboy wrote:had the exact problem last week same model and it was the main board think the part no was CO0254298

The problem is that there are 2 different modules fitted to a BWM129 and BOTH of which have eeproms that need configuring with a Smartcard before they will work. The cost of all that little exercise is exorbitant in the extreme. And likely as not the reason why neon_3sp_glow sought the help of EMW in the first place.

I’m more than convinced the recon module is duff which leaves poor neon_3sp_glow somewhere between a rock and a hard place.

Meanwhile, I wait with eager anticipation (baited breath even)of a happy conclusion from his return to the job today….fingers and toes tightly crossed…… 😐

[electrofix]

Re: Hotpoint BWD129 – energising drying solenoid all of the

try ringing EMW and ask if the board you have may have a leaky triac ( i have had board pass their test and end up being faulty ) or will they give you a different board if you send yours back

also take it you checked for earth faults. std valves pull about 5 watts which is just over 20 mA to earth. ie wont blow rcd

Dave

[neon_3SP_glow]

Re: Hotpoint BWD129 – energising drying solenoid all of the

hey thanks for all the help on this one. The planned monday visits turned into thursday due to customer holiday, hopefully not booked because of the dramas!

EMW says it must be leaking through the connector block or the loom, i will check these things and also the voltage reaching the solenoid.

The solenoid in question tested the same resistance as the others.

[neon_3SP_glow]

Re: Hotpoint BWD129 – energising drying solenoid all of the

Turns out, the guys at EMW were once again spot on.

The terminal block that feeds the drying solenoid and temp. senser was leaking. The tiny plastic mould that seperated the metal pins had melted. Fitted a new terminal block and problem solved

Thanks for all your input, and we now know when a heater blows the module the connecting blocks can melt, causing funny faults. peace out.

[Author]

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