Servis M6854W Motor Not Turning
Please help I have a Servis M6854W 1400 which has stopped doing a cycle/rinse/spin - anything to do with the drum rotating. Am guessing it's the motor. I have an old Servis M6003 1300 in the shed which has a temperature problem. Can anyone tell me if I can use the M6003 motor on the M6854w. It fits and the pulley on the motor is in the correct position but I am worried about the wiring as the wires are different colours on both. It has the same amount of wires and the connections are the same. Can it damage the motor or the washing machine if I try it. I have been cleaning up the M6003 and found a broken wire on the thermostat - the machine was washing at a boiling temperature which made me think it was the thermostat but realise now it was a broken wire. I have now fixed the wire and the M6003 is working fine. I still want to see if the motor works on the M6854W though. Does anyone know.
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.
Servis M6854W drum functions dead; PCB track blowing
- The problem
- Servis M6854W would not carry out any wash actions involving drum rotation, including cycle, rinse and spin. The owner initially suspected the motor and asked whether a motor from a Servis M6003 could be substituted.
- Likely cause
- Most strongly supported diagnosis is an electrical short or low insulation fault affecting the motor circuit or another connected component, which caused a PCB track between the element and motor connections to blow. The motor itself was reportedly checked and the brushes were said to be OK, so the exact failed part was not confirmed.
- What fixed it
- Advice was to compare replacement motor wiring with a continuity meter before attempting interchange, and to insulation-test the donor motor/machine components because damp or insulation faults could damage the main PCB. After a repaired PCB track blew again, the forum advised that without proper insulation testing the fault could not be safely traced, and given the machine was obsolete, replacement/scrapping was the practical recommendation.
- Checks to try
- Motor checked
- Motor brushes checked
- Module/PCB removed and visually inspected
- Continuity through wiring checked
- Pump checked again
- Blown PCB circuit/track found between the two wires to the element and two wires to the motor
- PCB track temporarily repaired with soldered wire, then blew again
- Parts or tools mentioned
- Continuity test meter
- Insulation test meter
- Replacement module listed at £17 on eBay
Safety: Further diagnosis should be carried out by a suitably qualified appliance engineer.
4 Answers
You would need to compare the wiring with a continuity test meter to work out if each motor has the armature, field coil and tacho coil in the same place. You would also really need to test the old motor that's been in the shed with an insulaiton test meter to make sure it is electrically safe after being in potentially damp conditions.
The motor isn't so much likely to get damaged as the main PCB.
Need Professional Help or Spare Parts?
Thanks Washer help (Andy). My M6003 is now working fine. but I am still trying to fix the M6854W. Had the motor checked and brushes, looks ok and now I've had the module off. I have checked all continuity through the wires and checked the pump again. All ok. My 24 year old son has just walked in and looked at the pcb board and found a blown circuit in between the two wires to the element and two wires to the motor. He soldered some wire on to make contact, put it back on the machine and has blown again. Have found a module for £17 on ebay but think if i put new one on it's going to blow again. Why would the circuit blow. any help?
A direct short, or low earth insulation on a part can blow the pcb, especially a motor, but without an insulation test meter putting 500v dc through the machine you can't trace which if any part is shorting out. To be honest, as it's a competely obsolete machine and Servis no longer exist I'd be tempted to cut your losses.
Need Professional Help or Spare Parts?
Thanks for the advice. At least I've got a washing machine I can use, was hoping to fix both so my friend could have one. Think I'll take a trip to the tip. Thanks for your help.
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