Baxi 105e 30 and 50

[Leo21]

As above 105e flashing on 30 and 50. Never seen this before, anybody else seen it? I'm sure it's the pcb, I've ordered a new one. Thought I'd seen everything on these.

 

[Billy Bob Bob]

30 is flame failure 50 is fan,so either fan relay,aps ,ignition system or fan,also do basic electrical checks,mains in, RP etc

 

[Leo21]

Both lights flashing at the same time Mark. The fan doesn't start. So can't be aps or flame failure if it's not getting that far into the cycle.

 

[Billy Bob Bob]

Both lights flashing at the same time Mark. The fan doesn't start. So can't be aps or flame failure if it's not getting that far into the cycle.

agree,remove pcb cover and check for water,have you done basic elec checks?

 

[Leo21]

Pcb was dry, haven't checked polarity. They normally cycle when wrong don't they? Anyway, thanks for the help Mark.

 

[Billy Bob Bob]

Pcb was dry, haven't checked polarity. They normally cycle when wrong don't they? Anyway, thanks for the help Mark.

no,normally when polarity is revered or voltage to high they see a flame failure fault or flash up weird lights,probably is pcb but woth checking the basics or it will fry the new one

 

[Leo21]

It was the pcb.