Grant Vortex oil boiler sensor replacement

[Kuro507]

We have a 26e Grant boiler, this week it wouldn't fire up, the power light blinked slowly but never fully illuminated. Some googling and a call to Grant and we diagnosed a failed PCB.

Luckily a local plumbers merchant had one in stock, so I was able to replace it the same day - all working again

 

However, the new board comes with 2 new replacement sensors, white for the store sensor and black for the flow sensor.

I didn't want to change these at the same time, to check everything was working first. (Nothing worse than changing multiple things and not knowing what caused the issue, or even bigger issue if something else doesn't work after you introduced a new problem!)

 

Any advice on replacing these sensors? do they just push into their housing? Will the old ones be a pain to remove?

[ProDave]

They normally just push into a pocket.  Note the depth the old ones come out and set the new ones in the same depth.

 

But if the new PCB is working with the old sensors I would just leave it like that.