no power to vaillant boiler

[bowie77]

hi i found this site whilst trying to solve my boiler problem. looks a great site and i hope someone could help me.
i have a vaillant ecotec pro boiler. the hot water stopped working the other day so i checked the boiler to find the pressure had dropped to almost zero. so i topped it back up again but it wont switch on and has no power to it. i've checked the fuse in the pcb and changed the 3amp fuse but no joy, nothing has tripped. any ideas anyone?

 

[buck51]

Have you checked all the controls, are in the correct position???

 

[bowie77]

thanks for the reply.
yes i believe they are

 

[tonybhoy]

Have you checked the LNE at the boiler's terminal strip?

 

[bowie77]

sorry my knowledge on boilers is very basic at best. whats LNE?

 

[PEDANTICVINDICTIVEMAN]

London Northeast Line

 

[simond]

I've never had one go, but I believe there is a thermal link at the top of the Giannoni heat exchanger.

I'm reliably informed that if this goes, there is a reasonable chance you will need a whole new heat exchanger due to the temperature it fails at.

Not sure if it crudely cuts the power or comes up on the display as a fault code. If it is the former it would explain the circumstances.

 

[tonybhoy]

sorry my knowledge on boilers is very basic at best. whats LNE?

Sorry but you've already said you changed the PCB fuse, just assumed you knew what you were doing.

Live Neutral Earth=power supply to boiler, it's well marked just follow the cable going into the boiler and test with a multi-meter set to 600 ACV

 

[adlplumbing]

live neutral earth if you don`t know this get an engineer in

 

[bowie77]

yeah i realised what LNE was after i posted. sounded a right thicko i bet. i just wondered if it was something easy i could of done before calling someone out. thought there might be a reset switch or something

 

[tonybhoy]

yeah i realised what LNE was after i posted. sounded a right thicko i bet. i just wondered if it was something easy i could of done before calling someone out. thought there might be a reset switch or something

If there's no display on the boiler then you won't be able to reset it if there is a reset button.

If there's power going to the boiler and no display then it's more than likely a board problem but I'm not familiar with Valliant boilers just talking generally like.

 

[bowie77]

i've been hoping it wasn't the board but it looks that way. thanks for your help

 

[Beerlover]

TROLL ALERT

 

[bowie77]

knob alert