Hi, I've got a Myson housewarmer elegant 2 back boiler. I've got no central heating or hot water, but gas heater at the front works fine. We don't know how to check if the pilot light is on or not. We can't see any kind of little window. All there is is a grey knob with Off, 1 to 6 number on it, we can't see an ignition button for the boiler at all. The only ignition knob is on top of the gas heater and only seems to light up the heater. Any help please. Thanks.