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Always check that the AAV . , is operational on the puma type boiler .As Gaz states ,it is a crossflow ht.ex. , and therefore no d.h.w. plate or normal type hydraulically operated diverter valve , as we all know . Sometimes can be an awkward problem to solve .Cold inlet filter , though is a...

Try the condense plug on bottom left of boiler . Normally yellow in colour , slowly unscrew , with a jug underneath to collect water , and collect water . Also any water leakage within the boiler , onto the top of the syphon unit will cause the problem you describe . As previously mentioned on...

Do you have a primatic cylinder installed ? Is there one large , and one small storage tank in your loft space ?

The green light is a ,burner on indication and not a pilot light . Is your boiler regularly seviced ? This is a difficult question to answer , without being in front of the appliance . Your problems with the boiler usually require an engineer familiar with the powermax range , to effect a proper...

Without knowing the exact model of appliance ,I would suggest a faulty gas valve . This would be of the :soft-light : ,type .The gas valve , on a switched live supply of 240 volts a.c. ,should ignite on a low gas rate , which should then increase to the reccomended rate . This is the best...

Renew the synchron motor within the valve ,should cure your problem .

Reccomend P.T.F.E. tape around parallel thread of basin waste , under basin porcelain ,also clear , or white dow corning silicone sealant on mating surfaces .

Google , Baxi Parts Arena ,should find the part no . , that you require . Alternatively call Parts Centre , or wait for a reply on this forum .

1.5 bar

Would be nice to know .

No worries Chris , even you cannot remember everything . Me , I have trouble asing this keyboard ,as you can see . Where:s my spectacles gone now , where is the wife , hope tomorrow will be easier .

Have a service carried out by an engineer who is familiar with this type of boiler ,obviously corgi registered . The fault could be a few things , always difficult to determine from a keyboard . The red light cause may be cured by a service without any need for parts .It would be of interest to...

ChrisR ,I have changed many wax capsules only with no leakage .The common problem with changing the full valve , is , the dreaded back-nut .Before I even isolate , or , drain boiler , a liberal spraying of wd.40 on the nut ensures that it will be easier to loosen . The 90 degree angle bend of...

Yes . Excellent piece of kit , with practically no maintenance .Check which type of tariff is available from your energy supplier .

Greenstar without a doubt .

Check ebay ,powermax 155 , London area .

On the puma model , the normal pump is a myson.Unscrew the black plastic cover , do this with boiler OFF .Once you have removed the cover , you will see a 4mm. nut . Pull the nut towards yourself and rotate it . If this can be rotated , turn on boiler .If pump is operational , you will see the...

Let us know the outcome . Are you having British Gas , and Heat-team arriving on a joint visit ?

Try increasing internal water pressure to one and a half bar .

Re-read your post , as your house was built only 8 years ago , the insulation and thermal loss should be to current regulations .Did you record the gas meter index reading on the day that you moved in ? Ask your immediate neighbours ( if they have the same system installed) ,their normal costs...