View Single Post
  #1   Report Post  
glenn
 
Posts: n/a
Default Potterton Puma 80 Combi

Any suggestions as to the cause of the following fault.

Hot water is working OK.

Central heating switches on for 10-20 seconds, hot water emerges form heat
exchanger into diverter valve and would appear to the enter the CH return
side of the CH system (yes the valves are open). Water would just appear to
be pumped around the combi `end` of the system. Water gets so hot, gas valve
cuts out.

Diverter valve (full) has been replaced, problem persists. CH is also full
of crap and would appear to need a good flush, this has been attempted
(possibly not completely flushed) but problem still persists.

Any experts with this combi ??


Glenn