--- title: "The paper test, and four other checks that cost nothing" description: "Door seal, level, grille, vents and settings. Each one removes a branch of the diagnosis before a technician is even booked." url: "https://refrigeratorrepair.center/guides/the-paper-test-and-other-checks/" date_modified: "2026-09-24" --- Troubleshooting # The paper test, and four other checks that cost nothing For the refrigerator door seal paper test, close the door on a strip of printer paper every six inches around the gasket, corners included, and pull: firm drag means a seal, no drag means a gap. Four other checks: a front-high tilt so doors swing shut, warm air leaving the grille, clear interior vents, and no demo or Sabbath mode. By [RefrigeratorRepair.center technical team](https://refrigeratorrepair.center/authors/technical-team/) Published September 24, 2026 ## At a glance. A strip of printer paper, a bubble level and a look at the settings menu remove more wrong diagnoses than any meter. None of these checks needs a tool you would have to buy, and none of them puts you near wiring. Read the whole guide ### The five checks Seal, level, grille, vents, settings Done in that order they take under half an hour. ### Paper you need One sheet of ordinary printer paper, cut into strips Thick card gives a false pass. ### Right tilt Front a little higher than the back Enough for an open door to swing shut on its own. ### Most overlooked Demo or showroom mode Lights and display work while the cooling is switched off. In this guide 1. The paper test, done properly 2. Level: side to side flat, front to back tilted 3. The grille and the warm air leaving it 4. Vents inside the compartments 5. Settings, modes and locks 6. Reading the results together 7. Step by step 8. Questions ## The paper test, done properly The refrigerator door seal paper test takes a strip of paper and a few minutes; doing it properly is mostly a matter of where you test. ### Pulling the strip 1. Cut a sheet of printer paper into strips about two inches wide. 2. Open the door and lay a strip across the gasket so half of it hangs inside the cabinet. 3. Close the door. 4. Pull the strip slowly out. You should feel steady drag; if it slides free with no resistance, the gasket is not touching the frame at that point. ### Work around the whole door The mistake most people make is testing once, at eye level on the handle side, and calling it good. Work around the whole door every six inches or so: the hinge side, the top corners, and especially the bottom corners, which are where gaskets fold and harden first. That is the refrigerator door seal paper test as it is meant to be done, and on a tall door it means twenty or more pulls. ### Spots to test on each type - French door: test where the two upper doors meet the hinged center flap, as well as the outer edges. - Side-by-side: the freezer door carries the dispenser and sags first; check its lower hinge-side corner. - Bottom freezer drawer: test the top edge of the drawer, where a mis-seated basket holds it open. - Undercounter and column: test the top edge, which you cannot see without crouching or a step stool. Source: [ENERGY STAR — Refrigerators (door seals)](https://www.energystar.gov/products/refrigerators) — Make sure the seals around the doors are airtight ## Level: side to side flat, front to back tilted Set a bubble level across the top of the cabinet, or across a freezer shelf if the top is out of reach. ### Side to side Side to side it should read flat, so that paired doors meet evenly. ### Front to back and the half-open door test Front to back, freestanding manuals want the front slightly higher, so the doors swing closed by themselves. Open the fresh-food door about halfway and let go. It should drift shut and seal without a push. If it hangs open or swings wider, the front is too low. ### Where each type adjusts Freestanding units adjust at the front leveling legs or rollers behind the toe kick; built-ins and columns adjust with the unit in its opening, which is a job for whoever installed it or for us. Source: [GE Appliances — top-mount refrigerator use and care guide 49-6797](https://www.geappliances.com/content/older-pdfs/49-6797.PDF) — Front raised just enough for doors to close from halfway open A close view of a spirit level lying on top of a refrigerator's upper edge. ## The grille and the warm air leaving it Whatever warmth leaves your groceries has to be shed into the kitchen, and that happens at a condenser which only works with moving air across it. With the unit running, hold your hand in front of the grille: at the toe kick on French door, side-by-side and most undercounter models, above the doors on a top-mounted built-in. You should feel a gentle flow of warm air. Note any of these: - The grille is furred with dust. - The grille is blocked by a rug or a basket. - You feel nothing at all while the compressor is humming. ### What this check settles Cleaning the coil behind the grille is covered in our condenser guide; for this check it is enough to know whether the air path is open. ## Vents inside the compartments Cold air reaches the fresh-food side through slots or louvers, usually high on the back wall or in the ceiling, and it returns to the evaporator through openings lower down. A cereal box pushed against the back wall or a bag of greens pressed over a louver can starve a whole compartment while the freezer stays perfectly cold. Take out whatever is touching the back wall and look for the openings. Keep an inch of clear space in front of each one. On models with a separate air tower in the center of the back wall, check that nothing has been wedged beside it. Source: [FDA — Are You Storing Food Safely?](https://www.fda.gov/consumers/consumer-updates/are-you-storing-food-safely) — Leave room so cold air can circulate around the food ## Settings, modes and locks Read the control panel slowly, not at a glance. Check the set temperatures in both compartments, and look for a showroom, demo or display mode that keeps the lights and screen alive while the compressor stays off. The manual explains how to leave it, usually with a button combination held for several seconds. Also look for these indicators: - Vacation mode - Sabbath mode, which on some models disables interior lights and alarms and can look like a dead control - Energy-saver mode - Control lock ### A code on the panel If the panel shows a code rather than a temperature, note it exactly and look it up in our error code library. Source: [Viking — FBI7360W built-in refrigeration manual (showroom and Sabbath modes)](https://vikingrange.com/file/1174/Viking_FBI7360W_Refrigeration_Manual_1.pdf) — Showroom mode disables temperature control; Sabbath disables lights and alarms ## Reading the results together The checks mean more in combination than one at a time. A seal that fails at the bottom corner on a unit leaning forward is one problem, not two: fix the tilt and the gasket may seat again by itself. A clear grille, open vents and correct settings on a unit that is still warm move the question inside the cabinet, to fans, defrost and the sealed system. Keep a note of which checks passed and which did not, with the date. If the same corner fails again in spring, that history is what separates a worn hinge from a gasket that simply needs cleaning. ## Where to stop Stop if leveling means lifting or rocking a built-in, a column or a panel-ready undercounter unit in its opening; those are anchored and heavy, and adjusting them is part of a service visit. Stop too if a door has visibly dropped on its hinge or the gasket is torn, since both need parts rather than adjustment. Written by [RefrigeratorRepair.center technical team](https://refrigeratorrepair.center/authors/technical-team/). The technicians who take the calls this site books. Every guide is written from what we see on those visits and checked against the manufacturer's documentation where it exists. Sources: [ENERGY STAR — Refrigerators (door seals)](https://www.energystar.gov/products/refrigerators) · [GE Appliances — top-mount refrigerator use and care guide 49-6797](https://www.geappliances.com/content/older-pdfs/49-6797.PDF) · [FDA — Are You Storing Food Safely?](https://www.fda.gov/consumers/consumer-updates/are-you-storing-food-safely) · [Viking — FBI7360W built-in refrigeration manual (showroom and Sabbath modes)](https://vikingrange.com/file/1174/Viking_FBI7360W_Refrigeration_Manual_1.pdf) ## Step by step. Five steps, in the order worth doing them. 01 ### Run the paper strip Pull a strip of printer paper from the closed door every six inches around the whole gasket, corners included. 02 ### Check the tilt Open the door halfway, let go, and watch whether it closes and seals without a push. 03 ### Feel the grille With the compressor running, hold a hand at the grille and confirm warm air is leaving. 04 ### Clear the vents Move food away from the louvers and the back wall so there is an inch of space in front of every opening. 05 ### Read the panel Confirm the set points and look for demo, Sabbath, vacation or lock indicators before assuming a failure. For the heart of your home. ## Questions owners ask. ### The paper pulls out easily at one corner only. Is that enough to matter? Often, yes. Humid kitchen air enters through that one gap continuously, and frost usually builds on the evaporator in the area nearest to it. Note which corner, because it tells a technician whether to look at the gasket or the hinge. ### Can I use a flashlight instead of paper? In a dark room a flashlight placed inside the closed cabinet will show light around a bad seal, but it only works on doors with a switch you can tape so the interior light does not confuse the result. Paper is quicker and more reliable. ### What if every check passes? Then you have ruled out the causes that cost nothing, and the problem is almost certainly inside the machine. Tell us which checks you did when you book, and the visit starts from there. ## The problems behind it. Each has a page of its own: what it usually means and the causes in the order worth checking. [All 18 problems](https://refrigeratorrepair.center/problems/) Problem ### Refrigerator Door Not Sealing 5 causes, cheapest first Food safety applies ### Refrigerator Not Cooling 7 causes, cheapest first Problem ### Refrigerator Control Panel Not Responding 5 causes, cheapest first Problem ### Condensation Inside the Refrigerator 5 causes, cheapest first ## When it needs a technician. The repairs on the right are where this guide ends when the checks do not settle it. ### Door, gasket and alignment The cheapest job on the list, and the real cause of a great many expensive-sounding symptoms. ### Diagnostic visit The visit that decides what the repair actually is, before any part is ordered. ### Controls and sensors A refrigerator cools to what it believes the temperature is, and a sensor reading wrong is obeyed perfectly. ## More in troubleshooting. The checks that are safe to do on your own, and the point at which doing more stops being sensible. [The whole section](https://refrigeratorrepair.center/guides/troubleshooting/) What you can check yourself ### Five observations that narrow a refrigerator problem down before anyone visits Is the freezer cold, is there frost, is it running, did it drift or drop, and has anything changed about where it stands. What you can check yourself ### Where the model number hides, and why nothing works without it On a Kenmore the first three digits say who actually built the appliance. On everything else it decides which parts are carried. Guides ### All 19 guides Six sections, by what you are trying to find out. --- **[Read on the site: The paper test, and four other checks that cost nothing](https://refrigeratorrepair.center/guides/the-paper-test-and-other-checks/)** **[Book a visit with RefrigeratorRepair.center](https://refrigeratorrepair.center/schedule/)**