Hoover New Wave Auto-Washer 1300 'dot On Display' Fault
Hi,
This is my first post, so please bear with me when I try to explain the fault!
The first thing I have to say is that the above fault has been happening over the years. Under normal operation, this dot appears in place of the numbers when the door is open and the machine is on.
I have solved this fault in the past by 'wiggling' the on/off switch or by wedging a matchstick in the on/off switch to hold the button in place. If the matchstick was removed then the dot would reappear.
Today, the matchstick method didn't help either, so I decided to open up the machine and take a look. I took the switch apart, cleaned the components and put it back in, but that didn't help. I even bypassed the switch by briefly directly connecting up the wires, but the same fault appeared. I cleaned out the clear pipes and the sludge from the bottle at the bottom. That didn't do anything either.
As I was about to call it a day, I gently pressed the door release button and hurrah!! The '0' appeared on the display (even when the door was open, because the switch was bypassed). Then after a short time it disappeared again and the dot reappeared.
So now I am at a lost as to what the fault it. It can't be the switch - but why did the matchstick method work? Why did the '0' appear for a short time then go again? I checked the contacts elsewhere and they all seem sound. Is it the door mechanism? Doesn't the machine recognise that the door is closed (again, why would wiggling the on/off switch have an effect)???
Any help and advice would be appreciated as this is baffling and confusing me!!
Thanks,
Richard.
Solution Summary
AI-generated from this discussion
This thread was marked as solved. Here's a summary of the problem and the fix, generated from the discussion below.
Hoover New Wave Auto-Washer 1300 showing dot on display and not recognising door circuit
- The problem
- A Hoover New Wave Auto-Washer 1300 intermittently showed a dot instead of the normal display and would not operate. The dot normally appeared when the door was open, but the fault had previously been influenced by wiggling or wedging the on/off switch. Cleaning the on/off switch and clearing the pressure chamber pipes did not resolve it.
- Likely cause
- Most strongly supported diagnosis is a fault in the door recognition circuit. The accepted reply says these machines often suffered from a worn plastic door latch not pushing the door interlock far enough, but because the same symptom remained when the interlock was temporarily bypassed, the more likely fault is loss of continuity in the wiring between the door interlock and the power module.
- What fixed it
- Check continuity of the wire from the door interlock to the power module. A worn door latch/interlock operation was also suggested as a known issue on this model range, but the exact repair was not confirmed in the thread.
- Checks to try
- On/off switch dismantled and cleaned
- On/off switch temporarily bypassed for testing
- Clear pipes cleaned
- Sludge cleaned from the bottle at the bottom
- Display changed briefly when the door release button was gently pressed
- Contacts elsewhere checked visually
- Accepted advice to check continuity from door interlock to power module
- Parts or tools mentioned
- On/off switch
- Door interlock
- Door latch
- Wiring from door interlock to power module
Safety: Do not bypass the door interlock except for brief testing. Further diagnosis should be carried out by a suitably qualified appliance engineer.
1 Answer
It sounds like quite an old washing machine, I remember them well. The plastic door latch on the door used to wear so that it no longer pushed the catch on the door interlock far enough to operate it. However, bypassing (which is not safe unless only temporary just for testing) should totally remove any issues. The dot should only appear when the door is open or if the door has closed but the door interlock hasn't operated properly. With both wires connected together the dot should never appear.
If the dot appears (and the machine won't operate) with the interlock bypassed I'd check the continuity of the wire from the door interlock to the power module.
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