6 
2 Vacuum seems to not charge but only gives SE error code
A Phillips xc8043/01 I'm checking just gives error code SE when connected to charger. Opened it and found out the 25v DC battery read about 1,2V and depleting as I measured. Would I be right in my diagnosis if I said that the battery is at fault?
No visable damage to the battery or vacuum.
The manual says that SE is the error code for service and gives no further guidance to locate the cause.
https://www.manualslib.com/manual/191822...
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Hi @markusnorstroem
Try connecting the charger to the unit and see if you can measure what voltage is present at the battery terminals.
It may be that the battery is faulty and won't charge, but you may have to check that it is trying to be charged correctly first.
Just what I'd try
door jayeff
@jayeff The upper terminal pins have 14.76v. The lower ones have 5.805v. That adds up to a bit over 20v.
The charger itself is documented in the manual to have a 30v output.
UPDATE: Tested the charger. 32.42v output in the connector to the vacuum.
door Markus Norstrøm
@markusnorstroem
32V would be about the correct voltage to charge a 25V battery, but if you're only measuring ~20V at the battery then it won't charge.
Not sure what you mean by upper and lower pins but IF the lower pins are connected to a separate battery that is connected in series with the other battery then you would think that it too would measure 14.76V giving a total of ~29V which would charge a 25V battery.
Not sure if the following will work but try measuring the charger voltage at the point where the battery connects but with the battery disconnected i.e. you're measuring the voltage from the charger through the BMS (battery management system), just to check if the full charge voltage is available and it is the battery that is the problem or if it isn't all available and it is the BMS that is the problem
It may be that the BMS will detect no battery connected and not switch through the voltage but you can only try and see what you get.
door jayeff
@jayeff The battery connector has 2 pins on either side. That's what I'm trying to say. Added a picture for clarification.
14.76 is on the upper of the two sets of pins. It is all connected to the same battery pack with 6 cells inside
door Markus Norstrøm
@markusnorstroem
You would have to look at the board where the battery is connected to as looking at the connections doesn't make much sense to me.
Normally you would have +ve and -ve connection for charging/discharging but any other connections would be for battery management i.e. temp monitoring etc so as i said you may have to see what the leads that showed 14V have on them with the battery disconnected as hopefully these two wires are the +/- power wires.
door jayeff
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