I'm glad you went to the effort but it was more the advice to turn the gas valve on and off that I take issue with!
It's not even a usefull test for the consumer as obviously turning off valve will stop the issue regardless.
If you hadn't mentioned the letby then I'd probably not have picked up the issue but the idea of considering a significant amount of letby and not advising shutting off permanently (especially on a premix burner with open venturi) is dumbfounding!
It's not even a usefull test for the consumer as obviously turning off valve will stop the issue regardless.
If you hadn't mentioned the letby then I'd probably not have picked up the issue but the idea of considering a significant amount of letby and not advising shutting off permanently (especially on a premix burner with open venturi) is dumbfounding!