Hi guys (&girls) 1st post!!!
Weird problem when boiler running in hot water & heating, fan (& burner presumably) rapidly modulating high & low (but not going out).
All getting to heat ok but unusual modulation. Had quick look today but returning tomorrow.
Any pointers???
Weird problem when boiler running in hot water & heating, fan (& burner presumably) rapidly modulating high & low (but not going out).
All getting to heat ok but unusual modulation. Had quick look today but returning tomorrow.
Any pointers???