--- title: "Why a new appliance acts up on its first run, and which quirks settle on their own" description: "A slow cool-down, a brief smell from new insulation, burners that click until the line clears." url: "https://applianceinstallation.center/guides/why-a-new-appliance-acts-up-on-its-first-run/" date_modified: "2026-09-26" --- When a new install goes wrong # Why a new appliance acts up on its first run, and which quirks settle on their own The first run of a new appliance is often uneven: cold storage can take 24 hours to cool fully and longer to make ice, a new cooktop gives off a brief smell, a fresh gas line clicks until its air is purged, and new inlet hoses can smell of rubber. Gas odor, a hot electrical smell, water on the floor or a tripped breaker are never break-in. By [ApplianceInstallation.center technical team](https://applianceinstallation.center/authors/technical-team/) Published September 26, 2026 ## At a glance. A machine that has never held water, burned gas or chilled a shelf behaves oddly for a day or two. Most of that settles by itself, and a short list of signs never does. Read the whole guide ### Full cool-down About 24 hours GE tells owners of a new side-by-side to wait a day before judging its temperatures. ### First ice 12 to 24 hours, first batches discarded The early batches rinse the new line and go down the drain. ### Gas burners after hookup Light within 4 seconds once air is purged GE's figure for a freshly connected gas unit. ### Smell from a new cooktop Normal for a short time New parts and insulation heating for the first time. In this guide 1. Why the first run is not the verdict 2. Cold storage: a slow first day 3. Cooking appliances: first heat and first light 4. Dish care and laundry: first fill, first spin 5. First-run signs that are never break-in 6. Questions ## Why the first run is not the verdict The water valves have never opened against house pressure, the insulation around a heating element has never been hot, the gas pipe behind a new cooking appliance is full of air, and the cabinet of a cold storage unit is at room temperature all the way through. The first hours of use are the machine meeting the house for the first time, and a lot of what looks wrong on that day is simply that meeting. The useful habit on day one is to watch direction rather than state. A refrigerator that reads 50°F at noon and 44°F by evening is doing its job. A burner that clicks three times before lighting on Monday and lights at once on Tuesday has finished purging its line. What deserves a call is a symptom that holds steady or grows, and a small set of symptoms that need action the moment they appear. ### Three questions that sort a quirk from a problem Before deciding anything about the first run of a new appliance, answer these about the thing you noticed. Two yes answers to the first pair and a no to the third usually mean patience; anything else means a closer look. - Is it improving from one cycle or one hour to the next? - Does it trace to something new: new hoses, new insulation, an empty line, a warm cabinet? - Is there heat, gas, smoke or water somewhere it should never be? ## Cold storage: a slow first day A newly delivered refrigerator or freezer starts with shelves, walls and foam all at kitchen temperature, and the compressor has to pull that heat out before the air inside holds steady. GE's troubleshooting table for its side-by-side models answers a motor that runs for long periods, and an ice maker idle in a freezer still too warm, with one instruction: wait 24 hours for the unit to cool completely. Long, continuous running during that first day is expected, not a sign of strain. Resist the urge to turn both controls to their coldest setting. It does not speed the pull-down much, and it leaves the unit too cold once it catches up. Leave the dial at the maker's suggested setting, stand a thermometer among the middle shelves, and hold the groceries back until it shows 40°F or colder, FDA's line for a refrigerator, with 0°F as the freezer's target. ### Ice from a line that has never run Ice comes later still. GE puts the wait for a freshly installed unit's first harvest at half a day to a full day, and asks owners to discard the early batches while the new line flushes itself through. Where house pressure runs low, GE adds, the valve can open as many as three times per batch; the repeated buzz and click from the back of the cabinet is that valve, not a leak. Source: [GE Appliances — Side by side owner's manual and installation instructions (49-60198)](https://www.geappliances.com/content/older-pdfs/49-60198.PDF) — Wait 24 hours for the unit to cool completely; a newly installed unit may take 12 to 24 hours to begin making ice; discard the first few batches; the water valve may open up to 3 times in low pressure; [FDA — Are you storing food safely?](https://www.fda.gov/consumers/consumer-updates/are-you-storing-food-safely) — Keep the refrigerator at or below 40°F and the freezer at 0°F; use appliance thermometers Close on the plugged shipping-bolt holes at the back of a new washer. ## Cooking appliances: first heat and first light GE's owner's manual for its electric freestanding models notes that a slight odor is normal the first time a new glass cooktop is used, because new parts and insulating materials are heating up, and that it fades within a short time. Peel every scrap of blue protective film beforehand: the same manual warns that adhesive left on the steel cannot be removed once it has baked on. Gas models add one more first-run behavior. A newly connected supply pipe holds air, and the igniter will spark until gas reaches the burner. GE's gas installation instructions say that once the air has been purged from the supply lines, the burners should light within 4 seconds. Light each surface burner in turn, then the oven, and watch for a steady blue flame. ### Clicking with no flame after a gas hookup A few seconds of sparking on the first try is normal. Sparking that goes on across several attempts, a flame that lifts off the ports or burns tall and yellow on natural gas, or any smell of gas is not break-in. Turn the knob off, do not keep trying, and have the connection and the appliance's gas setting checked, since a unit converted for one fuel and fed the other can misbehave in just these ways. ### The new oven that bakes differently Whirlpool warns that the replacement may finish dishes sooner or later than the oven that came out, and calls some change in browning ordinary. GE's advice is to follow recipe times and temperatures carefully for the first few uses and, if the oven still seems off, to use the owner-adjustable temperature offset in the settings rather than assume a failure. Whirlpool adds that a thermometer set on the rack is a poor judge, because the elements cycle above and below the set point. Source: [GE Appliances — Electric free-standing ranges owner's manual (49-2000951)](https://images.salsify.com/image/upload/s--3mbg7X0W--/jpbhjldyidthhl0anlxv.pdf) — A slight odor is normal the first time a new cooktop is used; remove all protective film before first use because baked-on adhesive cannot be removed; a new oven may cook differently, follow recipes for the first few uses and adjust the temperature if needed; [GE Appliances — Gas range installation instructions (31-2001181)](https://images.salsify.com/image/upload/s--908c05QS--/f3ee5a7cd364e8da504dd855094d7730a19cf416.pdf) — Once air has been purged from the supply lines, burners should light within 4 seconds; the unit leaves the factory set for natural gas ## Dish care and laundry: first fill, first spin Water appliances show their first-run quirks by ear and by nose. GE explains that a new laundry machine can give off a strong rubber smell from its new inlet hoses, one easily mistaken for something burning. Its test is simple: start a hot fill and stop the cycle before the drum turns. If the smell is there during the fill alone, with no motor or pump running, it is the hoses, and it fades with use. A dish care machine draws from the hot line, and GE's installation instructions ask for water between 120°F and 140°F at a pressure of 20 to 120 psi. On the first run, the pipe under the sink is often full of cold water, so the machine heats longer and the cycle runs past the time on the display. Running the kitchen tap until it is hot before pressing start shortens that first cycle. - Rubber smell only during the fill: new hoses, fades over the first weeks - Longer first cycle on a dish care machine: cold water in the line - Heavy knocking or the machine moving on its first spin: stop it and check that the transit bolts came out - A puddle at the front after the first load: stop and look at the connections, never wait it out Source: [GE Appliances — Burning or rubber odor in a new washer](https://products.geappliances.com/appliance/gea-support-search-content?contentId=19382) — New inlet hoses can give off a strong rubber odor during fill; if it occurs before agitation it is the hoses and fades over time; [GE Appliances — Built-in dishwasher installation instructions](https://products-salsify.geappliances.com/image/upload/s--yxlKQraa--/4e08089748bc59f01329d93f1d3a0456e6018299.pdf) — Adjust the water heater for 120°F to 140°F; hot water supply pressure must be 20 to 120 PSI ## First-run signs that are never break-in Some symptoms have nothing to do with a machine settling in, and they are the reason to stay home for the first cycle of every newly fitted appliance. Each of them points to how the unit was connected, not to how new it is, and none improves with another cycle. One more sign belongs in its own category: a display that lights up, answers every button and still produces no cold or no heat. That is usually a showroom setting or a supply problem rather than a failed part, and our guide to setup codes and demo mode walks through it. - Smell of gas at any point: knobs off, appliance valve closed, no switches, leave and call the utility from outside - Hot plastic or electrical smell, or smoke from the back or the base: switch the breaker off - A breaker that drops the moment the unit starts: leave the switch down, since each reset only repeats the test - Water spreading from under a machine: close the supply valve and keep away from outlets - Warm, damp air filling the laundry room: stop the cycle, the exhaust is loose or crushed ## Where to stop Gas odor on a first run means knobs off, the valve behind the unit closed if you can reach it without lingering, no light switches or lighters, windows open, everyone out, and the utility called from the sidewalk. A hot-wire smell or a tripping breaker on day one means the breaker goes off and stays off. Tightening a gas union, loosening a refrigerant fitting or working inside a live panel is never the homeowner's part of break-in; book a visit and we will go over the hookup. Written by [ApplianceInstallation.center technical team](https://applianceinstallation.center/authors/technical-team/). Installers who fit new household appliances, writing from real openings and hookups and each maker's installation instructions. Sources: [GE Appliances — Side by side owner's manual and installation instructions (49-60198)](https://www.geappliances.com/content/older-pdfs/49-60198.PDF) · [FDA — Are you storing food safely?](https://www.fda.gov/consumers/consumer-updates/are-you-storing-food-safely) · [GE Appliances — Electric free-standing ranges owner's manual (49-2000951)](https://images.salsify.com/image/upload/s--3mbg7X0W--/jpbhjldyidthhl0anlxv.pdf) · [GE Appliances — Gas range installation instructions (31-2001181)](https://images.salsify.com/image/upload/s--908c05QS--/f3ee5a7cd364e8da504dd855094d7730a19cf416.pdf) · [Whirlpool Product Help — Poor baking results, wall oven](https://producthelp.whirlpool.com/Cooking/Wall_Ovens_and_Ranges/Wall_Ovens_new/Bake_Performance/Poor_Baking_Results/Poor_Baking_Results_-_Wall_Oven) · [GE Appliances — Burning or rubber odor in a new washer](https://products.geappliances.com/appliance/gea-support-search-content?contentId=19382) · [GE Appliances — Built-in dishwasher installation instructions](https://products-salsify.geappliances.com/image/upload/s--yxlKQraa--/4e08089748bc59f01329d93f1d3a0456e6018299.pdf) For the heart of your home. ## Questions owners ask. ### How long should I wait before calling about a warm unit after delivery? A full day. GE's guidance for its side-by-side units is to wait 24 hours for a complete cool-down. If the temperature is not falling at all after the first few hours, or the compressor never starts, call sooner. ### Is it safe to cook while a new appliance still smells? A faint, fading smell from new insulation is normal, per GE. Burn it off with the fan on and a window open. A sharp electrical or melting-plastic smell is different: switch the breaker off. ### Why did the burners click so long the first time? The new gas line was full of air. Once it is purged, GE says burners should light within 4 seconds. Clicking that continues after several tries, or any gas smell, means stop and book a visit. ### Should the first batches of ice really be thrown out? Yes. GE tells owners to discard the first few batches so the new water line can clear, and to allow 12 to 24 hours before the first ice appears. ## The problems behind it. Each has a page of its own: what it usually means and the causes in the order worth checking. [All 17 problems](https://applianceinstallation.center/problems/) Problem ### Cold Storage Slow to Cool on the First Day 6 causes, cheapest first Problem ### Igniter Clicking After a Gas Hookup: Air in the Line or a Wet Cap 6 causes, cheapest first Hazard after a hookup ### Burning Smell on the First Run: When It Is Normal and When to Stop 6 causes, cheapest first Problem ### Ice Maker Not Filling After the Install: Valve, Line and Patience 6 causes, cheapest first Hazard after a hookup ### Gas Smell After a Hookup: Leave the House, Then Call 6 causes, cheapest first ## When it needs a technician. The installations on the right are where this guide ends when the checks do not settle it. ### Gas hookup and leak check A new gas appliance joined to your shutoff with a new connector, every joint leak-tested, flames read. ### Water supply and shutoff connection New supply lines from a working quarter-turn stop to each water appliance, tested under pressure. ### Pre-installation site check A visit before you order: opening, path in, gas, water, drain, power and exhaust checked against the spec sheet. ## More in when a new install goes wrong. The early trouble that follows a new install: a unit that will not fit, a door out of line, a drain that backs up, an igniter that keeps clicking, and the shortcuts on delivery day that usually cause them. [The whole section](https://applianceinstallation.center/guides/common-problems/) Why a brand-new appliance misbehaves in its first days ### Install shortcuts behind early service calls: the steps a rushed hookup skips A knockout plug still in the disposer, a reused gas connector, transit bolts left in the drum. The skipped steps that surface weeks later, and how to spot each one before the crew leaves. Why a brand-new appliance misbehaves in its first days ### When a new built-in will not fit its opening: height, width, depth and the fixes A new floor, a frameless cabinet or an outlet box can cost the half inch that stops a built-in at the threshold. Which dimension missed decides whether it is a shim, a trade visit or an exchange. Guides ### All 18 guides Six sections, by what you are trying to find out. --- **[Read on the site: Why a new appliance acts up on its first run, and which quirks settle on their own](https://applianceinstallation.center/guides/why-a-new-appliance-acts-up-on-its-first-run/)** **[Book a visit with ApplianceInstallation.center](https://applianceinstallation.center/schedule/)**