blomberg 1301ABB dead after controller/interlock replacement

[admin]

Hi Guys,

My interlock shorted out ( or at least, so I believe – the feed lines on the controller board to the interlock were blown off the PCB ), so it’s been replaced and a new controller board put in, but the machine won’t display any signs of life at all. There is 240V appearing through the unit at the back ( a conditioner I’m guessing ), but there are still no signs of life. There is some water in the machine, and I’ve reconnected the cold/hot water feeds.

Any suggestions?

[Penguin45]

Re: blomberg 1301ABB dead after controller/interlock replace

Check the state of the connector blocks – especially where the tracking blew. The contacts can often be damaged by the bang.

Power off please………

Penguin45.

[admin]

Re: blomberg 1301ABB dead after controller/interlock replace

HI,

Checked the connectors and tightened up one, but still no joy. One thing I hadn’t noticed before ( kids make a lot of noise ) is that after switching on, a second or two later there’s a very faint click from down in the interlock area. Howver, no door light, no fill, no spin, nothing.

Any further thoughts, as the wife is showing all the signs of an impulse buy in the next day or so …

Cheers,
Eamonn

[Penguin45]

Re: blomberg 1301ABB dead after controller/interlock replace

I assume that the door locks after the click? I can only assume that the lock is wired incorrectly. A careful inspection of the lock (with the power off….) will show it to be marked either 1,2,3 or C,N,L. These letters (if you are lucky) will be printed on the wires close to the terminals. The lock requires a live and a neutral to operate the heater cirtcuit – when it “makes”, it switches power to the control circuitry and allows the machine to operate. Recheck the wiring.

Personally, I always make diagrams before pulling any wire, especially with an appliance I am not overly familiar with.

Regards,
Penguin45.

[admin]

Re: blomberg 1301ABB dead after controller/interlock replace

Unfortunately, the door isn’t locked after the click, and I transferred the wires one at a trime with the old unit and the new unit in front of me, so I can *guarantee* that they are in the same positions. I’ll recheck the seating on the board, and try dismounting the interlock to check voltages etc. when I get home from work tonight.

[Penguin45]

Re: blomberg 1301ABB dead after controller/interlock replace

Small thought upon reflection – is the release cable sleeve fully keyed home at both ends – that will sometimes prevent the lock from activating properly.

Penguin45.

[admin]

Re: blomberg 1301ABB dead after controller/interlock replace

Progress !

I have managed to make the machine recognise that all is well with the interlock by pushing the white plate that the latch presses on down. The machine then runs, all is well and good.

BUT

Regardless of how long after the completed cycle, you can’t disengage the door lock by pulling on the cable, nor will the plate travel back up under slight pressure. To release the door I had to insert a screwdriver through the hole in the backof the interlock – hardly ideal.

Is this a faulty interlock, or is there some subtlety in installation I’m not getting?

[admin]

Re: blomberg 1301ABB dead after controller/interlock replace

Hmm.

Having removed the release cable, it seems the lock is free to depress, indicating that the cable is at fault.

It’s like the release cable is suddenly 5mm too short.

And steel cable not bwing known for it’s rapid shrinkage, I’m guessing it’s my cack-handed fitting. Is there anything I should check for, as the sleeve appears to touch the plastic at each end?

[Penguin45]

Re: blomberg 1301ABB dead after controller/interlock replace

The “pip” on the ends of cable usually hook into place without any problems – it may well be the outer sleeve not fully pushed home – check both button and lock end. As you have observed, it can’t actually shrink 😀 .

Regards,
Penguin45.

[admin]

Re: blomberg 1301ABB dead after controller/interlock replace

Trullt bizarre – the pips are fully engaged, and the sleeve is as far as it will go, tight against the plastic of the housing. And STILL it’s a fraction short 🙁

It can’t be the mounting, as it’s done via pre-drilled holes.

I don’t suppose I’ve got a cable and an interlock on the edge of tolerance and I’ve just been unlucky?

More importantly, what to do now?

I must say, many thanks for all your help so far, it’s been most enlighening ( and very generous of you all ! )

Cheers,
Eamonn

[admin]

Re: blomberg 1301ABB dead after controller/interlock replace

SUCCESS !

It turns out that the cable had shrunk after all. Honest. Well, not really, but it must have been on the edge of tolerance, so all I did was trim two “rings” off one end with a junior hacksaw, while making very certain not to damage the cable, and all is now functioning perfectly.

I did give some thought to hanging the door the other way in order to prevent this, but in the meantime I’ve settled for insulating the contacts and the interlock body with a plastic bag – I need to get the wash pile down a bit !

Anyway, thanks for all your help, especially Mr Penguin45.

Cheers,
Eamonn

[Author]

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