Blomberg WNF8441AE20

[Hollytree_Technical]

Hi All

Prod: 7171884000
Serial: 14-400668-02

This one is flashing “00:44” and the conditioner symbol on the display and won’t change programs or start etc, it will set and unset child lock when asked but doesn’t do anything else.

When testing I found that I am only getting 2.5V to the water level sensor even when the sensor is disconnected, I assume that is not right, also when I check the resistance between the pins on the sensor then there is a pair where I only get 22 Ohms which seems a bit low but I don’t have another sensor to check against.

At the moment I am leaning towards the sensor going bad and taking out the main board unless any of you know better.

Jem

[electrofix]

they dont give readings for measuring the sensor. they do Say

In mini led washing machines with aquastop, the aquastop circuit is connected to level sensor cable. If the aquastop buoy detects water level for whatsoever reason, it will detect it as machine level sensor error

but that would give you an E7 fault

not mention of 44 and conditioner symbol

have you tried service mode ?

Dave

[Hollytree_Technical]

I don’t know how to get into service mode on it so wasn’t able to try it.
I don’t think that this one has aquastop on it, all 3 of the wires went direct from the module to the sensor and din’t appear to have anything tapped off anywhere.

The water level sensor in the machine is an ITW Metaflex small blue bodied unit that is marked “5VDC” however when I look online I find that the replacement is a white bodied unit that says “1=SIG 2=GND 3=SIG”, also when I look at the wiring diagram from Maddocks I find that the connections are listed as “-5V, PRES_1, PRES_2”. As I was struggling to understand why there would be two signal wires I did some poking around the net and found that it looks like the sensor may be okay as apparently that they sometimes move the circuitry that would normally be in the sensor onto the main circuit board and instead just leave the coil and a couple of capacitors within the sensorbody.

Jem

[electrofix]

have sent you the info to go into service mode

Dave

[Hollytree_Technical]

Thank you Dave

I went back today but could not get it into service mode, however looking throught the manual that you sent I see that there is a fault flow chart for if the “Program selection is not functioning” with no error code (page 19), this also asks if the conditioner light is flashing (it was) having confirmed that the selector switch was working properly it also confirms module failure.

As I can’t find stock of the module anywhere it has been declared BER.

Jem

[Author]

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