CentaurPlus C21 Two Channel Central Heating and Hot Water Programmer
Every so often a Whirling Noise comes from Programmer as if it was resetting itself.
never heard this before. Just had the valves replaced from Sunvic to Myson
Would this cause noise
Every so often a Whirling Noise comes from Programmer as if it was resetting itself.
never heard this before. Just had the valves replaced from Sunvic to Myson
Would this cause noise