Our Westinghouse WVG615SNG gas oven had an ignition problem. (Model now discontinued)
After doing all the regular things of turning it off and on several times, powering the oven off at the power point and then turning it back on (after setting the clock as it won't light with a blinking clock), I tried everything again.
Still nothing.
Took the screw out of the cover over the gas jets at the bottom to see if there was anything - burnt bits or something that had managed to get in there, or perhaps a burn out igniter – a simple enough part to replace the internet would have me believe, and one that fails leading to no ignition. Nope, nothing obvious.
Westinghouse WVG815SNG inside top.
So onto Westinghouse's website and book in a appointment, only a week hence, supposedly (from talking to the bloke who came to fix it last time) it's because there's very few technicians who can do gas ovens; you need various certifications.
Later that day, while cooking dinner I thought 'I'm just going to try it again' and the oven worked.
Okay, I thought, great an intermittent problem is even worse than a broken oven problem.
The following day the oven didn't work when I tried it in the middle of the day, but then later it did, still not much consistency, except I'd already started cooking.
The next day I decided to try and replicate this situation, I had some thermometers around so replicated cooking something on the stove top (also gas) figuring maybe it was heat from the gas stove top that was influencing the oven.
No.
Then I thought 'maybe, irritatingly and ironically the oven needs to be warm before it'll light'. I put a bowl of boiling water into the oven and closed the door, left it for 10 minutes and it raised the temperature from about 20º up to 30º inside the oven. Tried the oven again...and it lit.
So at least I had a work around for the oven while I waited for the appointment to come around.
When I told the oven repair guy all of this he said "that's strange, I've never heard of that before".
I do wonder if no one's tried to troubleshoot this problem the way I had before. He said it was just a fluke that it worked.
A repeatable fluke I would argue is not a fluke, he just went ahead and fixed it.
Faulty part: Model DSI230-1-LUS-D, 2400,50Hz, EGO 83.32000.005
The part replaced was: Model DSI230-1-LUS-D, 2400,50Hz, EGO 83.32000.005, which according to the internet is a heater ignition module.
There's not a lot that makes up the internals of the oven, not that I was really expecting a lot to be going on within it.