The short answer
On an appliance of this generation the clock is a mechanical or early-electronic timer, and it is the commonest reason one refuses to run. Ranked first on this platform: The clock or timer in an automatic mode. The checks below follow that ranking, and the first of them need no tools and no panel removed.
What you observe
- It accepts settings and never begins, or has recently had a power cut — A responsive oven that will not begin is usually in a mode.
- It resets itself part way through, more than once, at no particular point — A reset at random points is a supply event, not a programme fault.
- The behaviour changes depending on how firmly the door is shut — A fault that responds to the door is the door.
- NEAR MISS — it runs but does not hold temperature — That is a calibration or sensor question, and an oven thermometer separates it from a cycle fault in one preheat.
Causes, most likely first on this platform
- The clock or timer in an automatic mode — An oven with its clock set to an automatic programme will not run on demand, and after a power interruption the clock has to be set before anything will heat. It ranks first on this platform because a timer left in an automatic position will not let the oven heat on demand, and on a control of this age the difference between the automatic and the manual position is a small mark that has usually worn off the dial.
- A power interruption resetting the control — A brief supply interruption resets an oven part way through, and it will not resume. It ranks second here because a cabinet of this vintage has wear on everything at once, which changes the ranking: the parts that wear are far more likely than the parts that break.
- The door switch or the door not closing — An oven watches its door. It comes third in the order — a genuine cause here, behind the ones above it on frequency alone.
- The temperature sensor — The control ends a cycle when its sensor says the job is done, and it also protects itself when the sensor reads out of range. It sits fourth because the causes above it account for more of these cases, not because it is unlikely.
Check in this order, and why
- Look at the clock and set it to manual before trying anything else — Free, and it is the leading cause. It leads because it tests the top-ranked cause.
- Note whether the clock has reset itself when you find the oven stopped — A flashing clock is the fingerprint of a supply interruption. Tests the second-ranked cause.
- Close the door firmly and watch whether the oven light behaves as it should — The light is a free indicator of what the switch is doing. Tests the third-ranked cause.
What an owner can safely check
- Set the clock, cancel any automatic programme, and select a plain bake — Most ovens print the sequence on or near the panel.
About 10 min
- Check the breaker and the isolator, and note whether other appliances blink at the same time — If several things reset together, the supply is the fault.
About 15 min
- STOP at the first panel that needs a tool, and write up what you found — A technician who arrives knowing which checks came back clean spends the visit fixing rather than repeating them.
Before you touch anything
Safety
Switch the oven off at its breaker or isolator before removing any panel — a built-in oven is usually on its own circuit and is not unplugged by pulling it out.
When to call a technician
Call when the clock, the supply and the door lock have all been eliminated, because what is left is a sensor, a thermal cut-out or a board.
Nearest pages of this class
What this page does not cover
This page is written for the Moffat oven as a class, not for one family or one model line. Where a family- or model-specific page exists for your unit, that page is the more specific answer and the one to read first. Deliberately not here: part numbers, wiring colours and disassembly order, which differ by family.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
