No heating

[lillypodsparrot]

Hi, My heating has gone off, DHW is fine, bled the rads, pressure is fine. Have tried resetting etc, I also have a spare PCB which I purchased earlier this yr before I discovered my wife had accidently switched the power switch off. Anyone got any ideas of what it could be. Cheers

 

[lillypodsparrot]

Sorry, Forgot to add that the boiler is Baxi Combi 105e, any help would be appreciated. Cheers.Owen

 

[twgas]

is the power switch on?
link the external control connections at the boiler to determine whether the problem lies with boiler or external controls.

 

[lillypodsparrot]

Hiya Mick, thanks for replying, I made sure the power switch is on, we are getting hot water but no heating, I have replaced the internal timer & diapramg this yr, the system doesn't have a room stat, all rads bar 1 have tcv's on them, the only thing I can think of now is if the timer has gone faulty again. The boiler is 4+yrs old. Cheers. Owen

 

[gassafeengineer]

is the pin on the diverter valve operating the microswitch, coming back smoothly

 

[kevplumb]

Moderator 10
Moderator Comment Posted: November 6th 2010, 8:29 am Comment:
I have split this post from an old rambling thread about Baxi 105 Instants. Is this boiler the same model?

if you don't know why split it

 

[joe-90]

Because we can.

 

[kevplumb]

well it's a pity the mental idle gits don't bother moving some of the $hite that shouldn't be in here in the first place

 

[lillypodsparrot]

Hi gassafeengineer, thanks just checked it & it appears the pin is stuck, have clicked the micro-switch & it's kicking in, I guess a replacement divertor valve is in order then? Cheers.Owen

 

[gassafeengineer]

sure is not the nicest to change hidden screw under chasis to take out,

invoice number 4567765

total £120 cheque will do nicely

 

[lillypodsparrot]

Okies, can you fit it in to your diary now lol. As the pin appears to be stuck do I take it there is no way to free the pin? or is it a definite replacement valve? Cheers. Owen. How far are you from Harrington then gassafeengineer?

 

[gassafeengineer]

you can get a service kit for them but to be honest they where a bad diverter valve few problems, new diverter end of problem job done. where is harrington? harrington nr workington or another

 

[lillypodsparrot]

Yep, Harrington Nr workington did play at the Harrington Social club couple of weeks back & Egremont Legion

 

[lillypodsparrot]

I feel a right tosser, just checked again & I didn't realize there are 2 micro-switches on the diverter valve, 1 at the front & 1 at the top of the valve, both pins are sliding freely, when I turn the hot water tap on, the boiler fires up and it appears that both pins are touching the micro-switches so I assume the c/h is on but only when the dhw tap is turned on,when the water tap is closed both pins return back inside the diapragm, if I move the metal part on the top micro switch nothing happens it only kicks in when the metal part on front micro switch or dhw tap is turned on, I hope I'm making myself clear. Thanks

 

[lillypodsparrot]

After fitting new diverter valve & 3/4 fibre washers etc, still no c/h. anybody else got any further ideas as I'm at a loss. All in all found it quite easy to fit, took approximately from drain off to remove/refit,refill & check 1 1/2 hrs & all that without swearing. Would appreciate any further help. Thanks