Grant vortex 26e

[nige.m@]

Hi. Bit of a strange on. On Saturday my heating came on but was not asked for. Turned it off and thought no more. Sunday morning no hot water. Power light on switch is on every thing else is dead. There is no output from the board to burner live. Am I right in thinking it's possibly the pcb gone. I found the flow switch has been leaking causing steam/condensation in side the box. Could this have caused damage. Boiler is 12 years old and not internally in great condition.
Thank you for reading. Any help or ideas please.

 

[oilhead]

Could well be a problem with condensation but first off I would swap over the ch and dhw sensors and see if fault follows the sensor. PCB's are not the most reliable but check thoroughly with your multimeter first following the fault finding chart.

 

[Exedon]

Has your boiler got one or two board's?
If it has the single board they certainly don't like damp .
Seen several killed by customers trying to vent heating pump.

 

[nige.m@]

Could well be a problem with condensation but first off I would swap over the ch and dhw sensors and see if fault follows the sensor. PCB's are not the most reliable but check thoroughly with your multimeter first following the fault finding chart.

Hi. I can not find in the board where these sensors are. Any pointers.

 

[nige.m@]

Has your boiler got one or two board's?
If it has the single board they certainly don't like damp .
Seen several killed by customers trying to vent heating pump.

Only the one board

 

[Exedon]

Temperature sensors on right hand side of board.
If you phone Grant technical they will walk you through how to test. (In stark contrast with some other oil boiler manufacturers)
Try Heating world of spares for new board if required.