Section 03
Fault surveys, written down
A running record of what we find and how we trace it. No case studies, no customer names — just the fault, the sequence we worked through, and what it turned out to be.
Storm season and appliance control boards
Boards do fail here, and they mostly fail on a date rather than from age. That is a useful thing to know, because it changes the order of the whole survey.
When an oven drifts off setpoint
Four checks in order, cheapest and most likely first. Most ovens that will not hold temperature are not asking for a control board.
Heavy oven doors, hinges and springs
A door is a heat seal that happens to swing. When it stops closing square, the oven starts behaving like a sensor fault — and replacing the sensor changes nothing.
Every burner clicking at once after a spill
Continuous spark on every burner is upstream of any single burner. Dry it out properly before anyone buys a spark module, because most of these dry out.
The igniter glows and the oven still will not light
The most convincing-looking part in a gas oven is often the failed one. Brightness proves nothing; only the current it draws opens the gas valve.
Reading the rating plate before you call
Two numbers off a metal tag decide whether the part is on the van or on order. Here is where the tag is on each kind of appliance, and what else to read off it.