faulty valve on performa 24

[everflow09]

hi all. got a faulty divertor (i think) on a potterton performa 24.
The valve switch makes at front of valve but the switch on top is slightly to short. if pushed with screw driver the boiler fires. does this mean a new divertor valve or diaphram??

many thanks

 

[Billy Bob Bob]

remove the small diaprahm you will either find a blocked orifice in the body,or faulty diaprahm does NOT require a new valve

 

[everflow09]

many thanks gas man.
what is going rate for this?

 

[oldplumber]

Bout £300 if I have to drive upto to you old son. depends on your area tho, anywhere from £55 for a callout and parts extra going up

 

[Billy Bob Bob]

between £45-£ 85 plus parts at £5-£10

 

[everflow09]

lol

many thanks. i aint too hot on breakdowns as mainly do installs

 

[Billy Bob Bob]

right well your about to learn,drain the heating via a doc,isolate elecs,remove rear microswitch,remove lh side panel,remove 4x slot screws on the flow switch houseing,carefull not to lose spring/plunger,remove diaprahm look for wear/holes,check small orifice under the diaprahm for blockages use a needle or similar,fit new diaprahm and re-assemble but before you do this make absolutely sure the pump has not gone as you will get the same symptoms

 

[everflow09]

Have i got to drain the whole system cant i isolate valves under boiler

 

[Billy Bob Bob]

you can and drain via the white drain off,forgot to mention theres small hydrolic pipe to undo as well,this repair would take about an hour to do but allow a bit longer if unfamiliar with the boiler

 

[everflow09]

That hdolic pipie would be in in front of the valve?