main combi eco fault

[fixter1]

freind of mine rang me today to go have a look at his boiler, he said that when he has his heating on the lights for heating and hot water are switching from one to the other all the time could it be the diverter head at fault im going to have a look at it in the morning thanks

 

[aggis]

Could there be a hot tap slightly dripping, dhw ntc detects temp change & fires for dhw then returns to heating, then repeats ?
A phone call might answer this.

 

[fixter1]

thanks mate ill give him a ring the problem is the shop he has the boiler all so supplys the flat down stairs lol , correct me if im wrong but wouldnt the hall senor activate

 

[aggis]

If you're referring to the roomstat [hall sensor] on a combi it's hot water priority.
If it's the Hall sensor on the fan, that only detects that the fan is spinning.

 

[thomas donovan]

hot water ho****er love the censorship

 

[Billy Bob Bob]

If you're referring to the roomstat [hall sensor] on a combi it's hot water priority.
If it's the Hall sensor on the fan, that only detects that the fan is spinning.

hall effect sensors are fitted to a magnetic read switch its basically a flow switch the light would be on if a tap was dripping if there was a leak ,the sensor could be at fault to test pull the hall effect sensor off stick a magnet in it and open a hot tap if it runs ok put it back on the read switch and repeat test, it could well be a sticking motorized/diverter valve these can be cleaned up and silicone grease applied to the gubbins

 

[fixter1]

thanks gasman i did think could be diverter

 

[Billy Bob Bob]

thanks gasman i did think could be diverter

check the diverter bush has not burst,this will put water in the motor as well

 

[fixter1]

would there be water where the head fits on the diverter never done one on this boiler

 

[Billy Bob Bob]

yes around the pin and bush,take the motor out(easy) and shake it to your ear if its full of water theres your fault,now i dont think baxi do a refurb kit a ariston bush may fit but i have never tried and you need a new motor