my boilers light has started flashing red and the temp panel is flashing '03'. I have always had to top up the water level but now I doesn't ignite.
could anyone advise what is wrong and what action I can take. Thanks
Lisa Bradley, October 2008
That would be your domestic hot water sensor/thermistor or ntc, pt no. 10027352(same component different names), also check its wiring harness for moisture or loose connections.