Lights, smells, heat · Denver
What should I do about a burning smell?
The short answer
Switch the cabinet off at its breaker first, leave the grille and the back of it alone, and keep it off until somebody has found where the heat came from. Sub-Zero Appliance Repair Denver traces that — (303) 729-0972.
$89 service call, credited against the repair.
Before you call
- Switch the circuit off at the breaker panel before anything else, and leave the doors shut.
- If there is smoke or a flame, get everyone out of the house and call 911 instead.
- Do not lift the grille off or reach behind the cabinet hunting for the source of it.
- Write down what it smelled of, how long it lasted, and what the cabinet was doing.
Stop here and call Sub-Zero Appliance Repair Denver on (303) 729-0972 as soon as the breaker is off, because a scorched smell is not a wait-and-see.
What it usually turns out to be
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A fan motor running hot
The smell arrived with a sound that was not there a week ago, and it is sharpest down at the grille.
Evaporator or condenser fan motor$320–$740
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A connection or board overheating
A sharp electrical tang rather than dust, often alongside lamps or a panel that started behaving oddly at the same time.
Electronic control board$430–$1,010
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Something resting on a hot part
A softer melted-plastic note that fades once the cabinet stops, common after building work behind or underneath the run.
Quoted after the diagnosis
When it is worth a visit
The manufacturer's own guidance is blunt on this point: a burning odour alongside any new noise is a service matter, not something to watch for a week. Ring while the cabinet is still off, describe the smell, and say what else about it changed beforehand.
Why this one is different
Almost everything else on this site can wait for a convenient morning. A burning or hot-plastic smell cannot, because the thing making it is a sealed box of wiring, motors and insulation built into joinery, with a cabinet run above it and a wall behind it.
The safe sequence is short. Power off at the breaker, doors shut, hands out of the machine compartment. Nothing behind that grille is an owner’s job while there is any question of heat, and a cabinet that has been switched back on twice to see whether it does it again is a cabinet nobody can read afterwards.
Follow-up questions
Should I leave the food in there while I wait?
With the power off, a shut built-in holds its cold for a good while, and every opening throws some of that away. Leave the doors closed, move anything you cannot risk to a cooler in one go, and do not switch the breaker back on to buy time.
What if the smell has gone by the time anyone gets here?
It usually has, and that changes nothing. Heat leaves marks: discoloured insulation, a darkened terminal, a bearing that has dried out. A technician meters the circuits and inspects the parts that get hot, so the smell not repeating on cue is no obstacle at all.
Could it be the kitchen rather than the cabinet?
It can be, and a hot element or something dropped behind a neighbouring appliance is worth ruling out. But a smell that follows the refrigeration, or arrives with a new noise from the grille, belongs to the cabinet. Sub-Zero Appliance Repair Denver will say which after testing.
Talk to someone
Still doing it after the checks?
Say what changed and in what order, and the technician packs for that fault rather than for a guess. Technicians work 8:00 am to 8:00 pm, any day of the week, and the line takes a call 24/7.