Glow worm Betacom 30 c

[jordand]

Anyone have any experience repair these boilers? No lights on display so changed interface board. Same issue so assumed it's was the PCB. Have now changed both the interface board and PCB and still nothing on display.

Before anyone asks there is 230 V to the board

 

[jtsplumbing]

Is green light on ? have you tested for 230v at X15 ? are F1 & F2 fuse's ok ? is live & neutral right way round (Check polarity)

 

[jordand]

No green light. 230 V at X 15. Both fuses are OK. L and N are good. Really has me stumped.

This is with new PCB and interface board

 

[jtsplumbing]

Cant remember but don't these have a reset on the flow pipe, don't think the book mentions that one

 

[jtsplumbing]

If you have the book look on Page 9 Item 16 over heat stat on right hand side top rear.

 

[jordand]

Ok will do. Thanks

 

[Rabbitman]

The over heat stat wouldn't cause the fault you describing, it would cause the red light on the front to flash .........Try the grey ribbon harness between the two as there notorious for failing

 

[jtsplumbing]

The over heat stat wouldn't cause the fault you describing, it would cause the red light on the front to flash .........Try the grey ribbon harness between the two as there notorious for failing

Used to get the same thing with the CXi if it tripped everything would go dead, again hid at back of boiler.

 

[buckley plumb]

That's some money spent on a betacom. From memory boards are £200 or more. Passed a few of these back to glowworm for fixed price repair as parts prices are daft. Like the cxi fan can take out pcb did. You check resistance of fan pump etc before fitting new board.

 

[dave1]

Pressure sensor?

 

[jordand]

Is it possible for pump/fan to blow the new board even if there's no green LED after power is established?

 

[GrahamM]

Is it possible for pump/fan to blow the new board even if there's no green LED after power is established?

Technically could happen but would think you would get some power indication for a second before a short circuit takes out a new board.
Always check fan and pump before changing any board.

Not sure if will affect power etc but have you checked if this board has dip switches that may have to be set up? Failing that would be looking at some dodgy harness.

 

[jordand]

No indication of power after new board. There are dip switches but only needed to turn one on for 30kw NG as it comes set up for 24kw

 

[lame plumber]

best to just ring technical line and go through a test procedure with your multi meter, and disconnect everything till you find the fault source. It woks for me as I never have a pen to write down all the criteria for next time .