Hoover Vision Tech motor problem

[steverob1066]

***** This is a HOOVER machine, not a HOTPOINT – don’t know why I said it was *****

My washing machine drum doesn’t turn under power. When I set it to spin cycle, after the water pump has finished emptying I can hear the motor try to turn with the characteristic graunchy-whirry noise but it’s as if the motor stalls and then nothing happens. The timer continues to run. With the back off I gave the drum a hand manually as the motor kicked in and a couple of times it ran on a bit, turning the drum but then giving up with the same result.
The drum rotates freely with the belt off, and now with the motor on my kitchen table I’m testing it with a multimeter:

• The brushes have plenty of carbon left in them – more than half a stick in each
• The speed sensor wire show a resistance of around 40 ohm
• Not sure which wires are which in the multi connector, does anyone know?
• Pin 1 – black wire
• Pin 2 – grey wire – goes to one of the brushes
• Pin 3 – red wire (speed sensor)
• Pin 4 – red wire (speed sensor)
• Pin 5 – brown wire
• Pin 6 – red wire – the other brush?
• Pin 7 – orange wire

[electrofix]

steverob1066 wrote:
[*]Pin 1 – black wire
[*]Pin 2 – grey wire – goes to one of the brushes
[*]Pin 3 – red wire (speed sensor)
[*]Pin 4 – red wire (speed sensor)
[*]Pin 5 – brown wire
[*]Pin 6 – red wire – the other brush?
[*]Pin 7 – orange wire

going on the list above
with a multimeter i would expect
a reading between 2 and 6 which is the armature
a higher reading on the tacho pin 3 and 4
then a reading between 1 5 and 7 which will be field coil connections

if anything has failed it will be the armature. try taking a resistance reading across the armature and turning slowly to see if there are any spots where the reading changes

Dave

[steverob1066]

electrofix wrote:

going on the list above
with a multimeter i would expect
a reading between 2 and 6 which is the armature
a higher reading on the tacho pin 3 and 4
then a reading between 1 5 and 7 which will be field coil connections

if anything has failed it will be the armature. try taking a resistance reading across the armature and turning slowly to see if there are any spots where the reading changes

Dave

Thanks Dave – can’t see anything amiss with the readings:

• Tacho resistance (pins 3 and 4): 44 ohm
• Armature – pins 2 and 6 – ranges between 2 and 4 ohm as the shaft is very slowly rotated. (I had already cleaned the contacts because my first guess was brush trouble and maybe muck build up.) I rotated the shaft really slowly, both ways – not much resistance variation.
• Windings: pins 1-5, 1-7, 5-7 – all around 3 ohms

Does this mean the motor is likely OK and the problem is probably somewhere else?

[electrofix]

well its a possibility the motor is ok but we do occasionally get shorted turns in the armature which may not show up so easily

Dave

[steverob1066]

Well I refitted the motor and put it into wash mode, and got error code E08, which suggests it is the motor

[electrofix]

to look any fault codes or circuits I would need all the numbers of the machine label

Dave

[steverob1066]

Sorry – it’s a Hoover VT814D21-80. E08 error code is something to do with the motor or tacho I believe (according to Google).

[electrofix]

according to your initial title its a hotpoint good job a asked for the info

Dave

[electrofix]

well what i am getting is check the tacho wiring back to the board

Dave

[steverob1066]

OMG – you’re right – I’m cracking up. It’s def a Hoover.

[kaibart]

If its a e08 fault change the motor

[steverob1066]

I changed the motor and that fixed it 🙂

[Author]

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