Hello 19deltascout, and welcome to the forum. Your picture tells us a lot of important things.
First: The green earth wire ( middle prong in the mains plug in ) has been disconnected from the chassis of the stove. Normal mounting location for this green earth wire is like that on my attached pic... A self tapping screw and a standard crimped connector. See my pic. On my stove the green earth wire is mounted on the right side of the picture by a selftapping screw. On your Advantage stove the blowers etc. are "mirrored" , but the mounting principles are similar.
Next, we see that the thermostat terminal is missing. It should be right next to the mains plug. The two yellow wires were originally connected to the thermostat terminal, but has been permanently jumped by the conical shaped "patent" quick.fix connector.
And we also see that your stove was upgraded with the auto-igniter at some point. The igniter timing block is hanging in its wires under the stove.
As for cleaning and maintenance tips on a Whitfield ( and similar stoves ) the stickies at the top of this forum section have a wealth of useful info.
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