Baxi WM 531RS

[Mick10256]

Hi from a newbie to this site. I have a customer wanting a service on an old Baxi WM 531RS. Anyone know where I can download the MIs for this? Partsarena, onlineboilermanuals and gotoplumbing have let me down so far. Any help much appreciated

 

[diamondgas]

Would it be a WM 51-3 RS - GC 41-077-34 ?

 

[tamz]

Everything you need to know is on the data plate.

 

[Puddle]

Old Plumber ''Went to a baxi wm 531 RS today,main burner not coming on


Young Plumber " bumer ,maybe fan or air pressure switch"


Old Plumber "No,Doesn't have a fan or air pressure switch


Young Plumber "What,maybe a thermistor or flue thermostat then,had a few go wrong this week''


Old Plumber :No,Doesn't have a thermistor or flue thermostat


Young plumber ''eh?,maybe system pressure down,low system pressure sensor activated


No,low system sensor,system is not pressurised


Young Plumber ''Not pressurised!!you sure ?OK maybe flame rectification device or flow sensor''


old Plumber '' No it Doesn't have flame rectification or a flow sensor


Young Plumber "Never,maybe pcb then,had a few of them this week too!"


Old Plumber "no,Doesn't have a pcb"


Young Plumber ''Flipping heck,No aps,fan,thermistors,flue stat's,low system sensor,flow sensors,pcb,I think customer maybe messing around with appliance,removing and by passing parts,would isolate it and ID + riddor it and maybe punch customer on the nose on way out!!!!


Old Plumber ''No,No.No,its a old boiler,in the old days a boiler was a lump of cast iron ,hollowed out for water to pass through,a thermostat stuck in side to stop from boiling and burner underneath and gas passed through a basic multifunctional gas valve with a bit of heated copper it keep valve open,job done,all that was wrong was 4 quid thermocouple,used to change 5 a day now they are a special order


Young Plumber''Bye sounds of it,you had it made back then!!!


Old Plumber '' Probably did,we just didn't realise it ,just took it for granted things would get easier.....................

:rockstar:

 

[Billy Bob Bob]

you should be able to service this blindfolded they dont come any simpler but bear in mind the case seal is now unavailable in the unlikely event it breaks you cant buy a new one so the boiler becomes a turn off,you also need to pay careful attention to the BF terminal where it passes through the wall many will be rotten by now

 

[Mick10256]

Hi diamondgas,
No it's GC 41-077-01

 

[Mick10256]

you should be able to service this blindfolded they dont come any simpler but bear in mind the case seal is now unavailable in the unlikely event it breaks you cant buy a new one so the boiler becomes a turn off,you also need to pay careful attention to the BF terminal where it passes through the wall many will be rotten by now

Thanks for that. It's getting the cover off without damaging the seal that I was worried about. Are the internals much different to the WM 532RS? I've not been inside either before but MIs for that one are available.