Worcester Junior 28i Faulty PCB Board

[Wilbert]

I need some help with a Worcester Junior 28i gas boiler and I'm hoping someone here may have came across this fault before ...

I have checked the following:

• 240v at supply connections
• All internal push on connections are correctly fitted to the PCB board
• The transformer is giving the correct outputs
• All internal fuses on the PCB board are tested and showing OK
• I put a temporary link across LS and LR but when the 240v is switched onto the boiler no lights show on the front of the boiler (reset light, blue light or the maintenance light). The boiler doesn't even attempt to fire.

I have already replaced the PCB board and the fan PCB board but this didn't fix the issue.

What further checks would you recommend to get the boiler to fire? Any advice would be appreciated!

 

[ShaunCorbs]

Have you checked L-N ? 240 ?