I am experiencing a long delay of one to five minuites before the boiler fires up.
The fan runs so I know the flow switch works.
I have had a multimeter across the air pressure switch which is fine.
The LED row indicates all ok.
The DHW thermistor reads a correct resistance for the expected temperature and seems to vary correctly.
So I am left thinking main PCB?
When it eventually does fire the DHW is incredibly hot, but as the thermistor seems to read correctly, this also points me to the PCB.
Any thoughts or similar experiences would be greatfully recieved.
Tim
The fan runs so I know the flow switch works.
I have had a multimeter across the air pressure switch which is fine.
The LED row indicates all ok.
The DHW thermistor reads a correct resistance for the expected temperature and seems to vary correctly.
So I am left thinking main PCB?
When it eventually does fire the DHW is incredibly hot, but as the thermistor seems to read correctly, this also points me to the PCB.
Any thoughts or similar experiences would be greatfully recieved.
Tim