Hi there
We have pro combi 85 HE combi boiler which suddenly started going into lock out with solid red light.
When this happens the only way to get it working is to turn the main electricity switch off for a while then the boiler will reset and will work for short period of time before it goes to lock out again.
Accidently I find out that if I increase the temp from the controls the boiler will work fine for weeks without any obvious problems.
any ideas as to what can be causing this?
I've added a boiler diagram:
We have pro combi 85 HE combi boiler which suddenly started going into lock out with solid red light.
When this happens the only way to get it working is to turn the main electricity switch off for a while then the boiler will reset and will work for short period of time before it goes to lock out again.
Accidently I find out that if I increase the temp from the controls the boiler will work fine for weeks without any obvious problems.
any ideas as to what can be causing this?
I've added a boiler diagram: