Heatslave 15/19 hot water no heating !

[Steve ski]

Morning guys, First boiler service since qualifying with oftec, Boiler serviced and burner all good new nozzle and hose etc. The problem is the customer has no heating but hot water. I manually bypassed the valve to heating circuit to service (Honeywell diverter 3 way ) when the lever is released the boiler will only give hot water service. I dont want to throw tons of new parts at it as customer is far from wealthy! I know the diverters are common fault on these, but his programmer is a bit dodgy too. the valve appears to move nicely and does open, or could it be the pcb, any advice appreciated.

 

[TFGplumbing]

Does the boiler have an external programmer or an internal on op?

You got heating when you manually bypassed the diverter?

 

[Steve ski]

Internal on appliance ( bit clunky) no other controls in house, and yes heating when valve opened and locked ?

 

[TFGplumbing]

I'd be think of the diverter head personally

 

[Steve ski]

swapped out diverter valve as it wasn't making on the micro switch, however the problem persisted ! after some head scratching the customer punched the top of the boiler near the hot water and heating stat controls, and hey presto up she fires ! getting a price for replacements for him as we tried this several times with the same result every time lol, thanks for the reply in any case TFG !

 

[SimonG]

Its either the clock or the pcb, one of the relays sticks. If its the greenstar its the clock if its a se one then its the board.

 

[Steve ski]

Its a heatslave not greenstar or se, dont think its pcb or clock, when I take the cover of on the top of the pcb which contains the stats for hw / htg tap the stats gently with a screwdriver and woof off they go, checked all connections were pushed home and good, surely if clock or pcb were faulty I wouldnt get a result ??

 

[SimonG]

My moneys on the board. The relays stick.

Short out the stats, that will prove or disprove the stats.

 

[Steve ski]

Ok how do I short out the stats simon ?? I am listening and taking this on thanks !

 

[SimonG]

No problem.

Unclip the connectors from the back and bridge the connectors or fasten together.

 

[Steve ski]

Thanks simon could you expand on that explanation a little more please !

 

[Steve ski]

also are their any realistic grant schemes available for replacement boilers for pensioners on state pensions I could look into for him, his boiler is a wreck internal exp vess gone too! I want to help this guy but have a mortgage kids business to run etc? and have to charge for my time, this aint a easy job sometime is it !!!