Urgent help ferroli nightmare

[Riley]

Gone to look at boiler for mate who is selling.

Turned off boiler to do checks try and turn back on and I only get F9

GC 47-267-38

hot water was working now nothing.

Checked continuity on wiring to water sensor as indicated but have no idea what voltage I should be looking at as helpline closed.

Can anyone suggest me an answer here.

Found do it peculiar that there are two blue wires not attached to anything which apparently should attach to water temp sensor. do we think someone's been fiddling or does this model not have one

heeeeeelp I'm stuck here

 

[bewsh]

Is it just the 2 wire flow switch? Just check continuity through it when the tap is open. I think they are low voltage.

If it's the 3 wire turbine then you get about 5v when no hot water demand and then it halves to 2.5v when you have a demand.

F9 does suggest a fault with the flow switch though

 

[Riley]

It is very very weird mate and thank you for coming back Flow switch is tested and continuity is fine bit of a head scratcher. I'm just hoping it's not the PCB as I'm the last person to touch it and it definitely was working until I did I think I'm just going to have to systematically check every wire as that is another thing the F9 code indicates

 

[bewsh]

I've had it on glow worms before, where you knock the power off and back on and it blows the pcb, so could be a similar issue

 

[Riley]

I've had it on glow worms before, where you knock the power off and back on and it blows the pcb, so could be a similar issue

I am still inclined to believe a previous engineer has been fiddling and has linked something out I know it's not related but I still have these two blue wires which should be attached to the temperature sensor but that is nowhere to be found

 

[bewsh]

where do these 2 wires go on the pcb?

 

[Riley]

8 & 9 onX2

 

[bewsh]

So is there no temperature sensor on the hot water pipe?

 

[Riley]

So is there no temperature sensor on the hot water pipe?

Nope!!!

There's more to this than meets the eye

 

[Riley]

Found the answer two hours later. Some chimp so called engineer had linked it out so that the thermostat wasn't used. Assuming he couldn't be bothered to go and get another one when it broke before. Have left boiler off will return tomorrow with a thermostat