Fuse blown on heating system pcb

The_Scary_Man

Hi,

Our heating went this morning and when I went to check the Nest Heatlinks there was no power going to them. I took off the cover of the junction box and I saw that the fuse had blown and the clear fuse cover had melted.

Can I pull this off and replace the fuse or should I call in a pro?

meercat

Looks like you have to change the whole pcb. Job for an expert possibly

The_Scary_Man

I was thinking it could be

EHP

You should be able to change the fuse but most likely something like a faulty pump is causing it to blow so you'll probably have to find the cause.

whizbang

Looks to me more like a bad fuseholder, rather than a blown fuse.
I have come across these (on other systems) multiple times.

Needs a new fuseholder soldered into pcb, but there may be heat damage to pcb also..

Bruthal

Yea it does look like a very loose fuse holder causing problems there.

Grab All Association

The way these things are so cheaply built and soldered down these days. I’d be bugging Nest on social media about this requesting a replacement.

un5byh7sqpd2x0

Grab All Association wrote: »

The way these things are so cheaply built and soldered down these days. I’d be bugging Nest on social media about this requesting a replacement.

Why would Nest fork out for failure on a boiler PCB??

Grab All Association

Thaddeus Damp Ornament wrote: »

Why would Nest fork out for failure on a boiler PCB??

Thought it was the Nest thing he was on about.