--- title: "Oven not heating" description: "An oven that stays cold, or one that heats on some functions and not others. The display will not help here and that is a documented fact rather than an" url: "https://askomiami.support/symptoms/oven-not-heating/" date_modified: "2026-09-13" Appliance type: "Ranges, Wall ovens" --- # Asko oven not heating ### What to do in the next ten minutes Try every function in turn — bake, grill, fan, top and bottom elements — and write down which ones produce heat and which do not. Isolate the oven at the breaker for a few minutes and restore it, which is the only step the manual offers. Then note what the oven was doing when it first stopped: preheating, halfway through a long roast, or during a cleaning cycle. ### Why there is no code to read Six manuals were read — OCS8456S, OCM84331BG, OP8651, OT8636S, OCM8487S and OCS8664A — and all six print an undecoded ErrXX with one instruction behind it. There is no table, and the decoded lists that circulate match not one of the six. What we publish is the signal, never a meaning we cannot source. ### The parts question, said at the diagnostic Asko lists no ovens for sale in the United States. The machines here came through earlier distribution or were specified into a kitchen around European appliances, and their components travel from a European channel. That is a lead time rather than a surcharge, and it is stated before anything is ordered because on an out-of-catalog oven the timing is half the decision. An element has failed The straightforward answer, and partial heating usually points straight at which one. The part is ordinary; on a machine outside the US catalog the timing is the variable. A thermal cut-out has tripped The reset is trivial and the reason it tripped is the repair. An oven that keeps tripping is telling you about airflow or a thermostat, not about the cut-out. The thermostat is reading wrongly A sensor reporting the cavity as hotter than it is makes a healthy element look dead, and swapping the element first is the mistake this test exists to prevent. Which functions still heat? Every one, tried in turn. Partial heating narrows this to one element or one relay before anything is opened. Has it been overheating lately? An oven that ran hot and now runs cold has almost certainly protected itself, and the cause is upstream of the cut-out. Does the fan still run? A convection oven with a dead fan bakes badly rather than not at all, which is a different complaint and a cheaper one. The fan runs, the light works, nothing gets hot What it usually means Nothing narrows this faster than a list of which functions still heat ErrXX has no published meaning — that is the manuals, not our research A tripped thermal cut-out is common, and why it tripped is the repair What to do in the next ten minutes Try every function in turn — bake, grill, fan, top and bottom elements — and write down which ones produce heat and which do not. Isolate the oven at the breaker for a few minutes and restore it, which is the only step the manual offers. Then note what the oven was doing when it first stopped: preheating, halfway through a long roast, or during a cleaning cycle. Why there is no code to read Six manuals were read — OCS8456S, OCM84331BG, OP8651, OT8636S, OCM8487S and OCS8664A — and all six print an undecoded ErrXX with one instruction behind it. There is no table, and the decoded lists that circulate match not one of the six. What we publish is the signal, never a meaning we cannot source. The parts question, said at the diagnostic Asko lists no ovens for sale in the United States. The machines here came through earlier distribution or were specified into a kitchen around European appliances, and their components travel from a European channel. That is a lead time rather than a surcharge, and it is stated before anything is ordered because on an out-of-catalog oven the timing is half the decision. ### Can I use the grill in the meantime? If it heats and the oven is not showing a code, generally yes. If a cut-out has tripped there is a reason, and using the machine hard while that reason stands is not wise. ### It heats but everything burns. Different problem — that is calibration or a thermostat stuck closed rather than a dead element, and it is measured with an independent probe rather than adjusted by feel. --- **[Read full article: Oven not heating](https://askomiami.support/symptoms/oven-not-heating/)**