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Author Topic: Sebo height adjustment problem  (Read 2696 times)

Offline Seborthebest

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Sebo height adjustment problem
« on: February 25, 2020, 09:19:13 PM »
I have got a Sebo X4 with a height adjustment issue. The height indicator lights up as it is going up and down but its not gripping the carpet. I have taken apart the servo motor height adjuster(thanks to a previous post). Once assembled it works for a few minutes and then stays too high. Once switched off it stay in the highest position, is this normal? Do I need to bite the bullet and buy a new servo motor or could be the PCB? Any ideas please?


Online MVacs

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Re: Sebo height adjustment problem
« Reply #1 on: February 26, 2020, 06:32:46 PM »
When it is stood up it should rise to its highest setting.

When it is reclined, is it visibly lowering?

Offline Seborthebest

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Re: Sebo height adjustment problem
« Reply #2 on: February 27, 2020, 07:45:06 AM »
Yes when I start using the cleaner it does lower, but is taking 6 to 7 seconds to work. When I am on a hard floor it lowers and stays lowered when I switch it off. From the lower position where it grips fine for 10 seconds, then it rasies and you lose grip, then you just get wheel marks.

Online MVacs

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Re: Sebo height adjustment problem
« Reply #3 on: February 27, 2020, 01:19:02 PM »
I'd be inclined to try a brush roll first. How old is the machine? What wattage is it? Had it ever had a brush roll?

Is it behaving the same before and after you had the servo in bits?

Offline Seborthebest

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Re: Sebo height adjustment problem
« Reply #4 on: February 27, 2020, 07:55:20 PM »
I bought the machine second hand. I have had it for 3 years. I don't think that it is very old ....5 or 6 years. I have just replaced the roller. Yes still the same fault once I have reassemble. It takes an age to adjust the height, then doesn't maintain that height once it has got there. It's a 1100 watt.

Offline ryevac

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Re: Sebo height adjustment problem
« Reply #5 on: February 28, 2020, 09:14:18 AM »
Doesn't the hall effect sensor alter the height - as the friction is detected on the brush roll it raises the machine from the floor ? i would be looking at the sprocket / belt that drives the brushroll shaft / dog (bearings in this area) ?



I will Admit i don't do a lot of sebo, but just trying to think outside the box...
I think i had this issue a few years ago - one was on a brand new x4 machine which was returned to sebo, another case i had one and never got to bottom of it so dissed the servo assembly as customers budget was exceeded on the repair.
The only way to fail is not to try.

Offline TV Man

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Re: Sebo height adjustment problem
« Reply #6 on: February 28, 2020, 01:32:14 PM »
Its a Long shot but you could try resoldering the sensor I have had them dry jointed ,

Offline ryevac

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Re: Sebo height adjustment problem
« Reply #7 on: February 28, 2020, 01:47:20 PM »
Good call, could even be the sensor itself i suppose ?
The only way to fail is not to try.

Offline Seborthebest

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Re: Sebo height adjustment problem
« Reply #8 on: March 01, 2020, 08:15:04 PM »
Thank you. Where is the sensor on sebo? I have re soldered the little circuit board on the servo.

Offline TV Man

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Re: Sebo height adjustment problem
« Reply #9 on: March 02, 2020, 09:16:26 AM »
Its top right hand corner it has two lead outs that are bare wire, they may have small blobs of silicon on them , Try Resoldering these lead outs to the PCB.

 

 

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