If that fails, see how much gas you're burning.
With hot water taps full on, you should snort about 1 cubic foot in 37 seconds.
Did you change both sensors or just the one?
If you didn't take the main one out, it might be covered in clag. Plug your old hw one on the wires & check the boiler gets jolly hot - carefully .
With hot water taps full on, you should snort about 1 cubic foot in 37 seconds.
Did you change both sensors or just the one?
If you didn't take the main one out, it might be covered in clag. Plug your old hw one on the wires & check the boiler gets jolly hot - carefully .