216731001 Frigidaire refrigerator Termination Switch is a compact⢠electromechanical safety â˘switch used to âterminateâ aâ controlled âŁfunction within a ârefrigerator; âtheâ component â˘is âtypicallyâ a temperature-â or event-actuated cut-out â¤that opens or closes a circuitâ to end a timed or thermal operation. as a discrete,â replaceable part⤠it usually âŁconsists of a â˘sensing element and switching⣠contacts housed for mounting within theâ appliance chassis âorâ evaporator compartment.
Inside the âapplianceâ the termination switch âserves â¤as a â˘control âand safety interface: it interrupts or provides power to sub-systems such as⤠the defrost heater â¤circuit, control board inputs, âor â¤compressor/relay circuits when a⣠predefined â¤temperature orâ condition is âreached.It⣠thus interacts directly⢠with the main control module, temperature sensors âor thermostats, â˘the defrost assembly (heater âand â˘timer/relay)and â˘the â˘wiring⣠harness; by⣠terminating an⤠operation it prevents⣠over-temperature⢠conditions, limits defrost duration,⣠and âhelps maintain correct cycle âsequencing⣠for reliable cooling⣠performance.
In⣠this âarticle readers will gain âa clear technical âunderstanding of â˘the â216731001 â¤termination âŁswitch’sâ intended function, how âto âverify model compatibility â¤and fitment, common failure symptomsâ to⤠watch for (for âŁexample continuous defrost, excessive frost â¤accumulation, warm compartment temperatures, â¤or lack of cycle termination), practical â¤troubleshooting steps (visual â˘inspection, continuityâ and⢠resistance checks, in-situ âtemperature verification),⣠and replacement considerations including âconnector âŁand âmounting variants, OEM versus âaftermarket optionsand safe service procedures such asâ isolating power and documenting wiring before⢠removal.
Table of âContents
- Function âand Role of the Termination Switch inâ Refrigerator Defrost⤠and Control Circuits
- How the 216731001 Frigidaireâ Refrigeratorâ Termination Switch operates Within the Appliance’s Defrost System
- Common Failure Symptoms âand Electrical Indicators⤠of âa Defective termination Switch
- Compatibility,⣠Replacement⣠Considerationsand Installation⣠Best âPractices for the Termination switch
- Q&A
- In Conclusion
Function and â¤Role of the Terminationâ Switch in Refrigerator Defrost and Control Circuits
The â˘216731001 Frigidaire Refrigerator Termination⣠Switch is a â˘small bimetallic⣠switch used to endâ the defrost⢠cycle⢠and protect â˘the â¤defrost â˘heaterâ and surrounding components âfrom overheating. Installed in â˘thermal⣠contactâ with the evaporator or the defrost heater assembly, the switch⤠changes state at âa âdefined temperature to open the heater circuit and send â˘the⣠control board aâ signal that defrost is complete. âInâ practice⤠this component behaves as a temperature-actuated cutoff: when âthe sensing element⢠reaches âits⤠setpoint the internal contactsâ open (or close, depending â¤on the⣠specific design), interrupting current âflow and preventing⣠extended â˘heaterâ operation âthat woudl otherwise damage âinsulation or overheat theâ cabinet.
Technicians should âtreat the termination switch as⢠both⤠a control input and a safety device; âreplacement must match âŁmechanical mounting, terminal â¤style,â and thermalâ setpointâ to maintain âcorrect â¤defrost timing and compatibility with âthe refrigerator control âlogic. â¤Troubleshooting â¤is straightforward with â˘a multimeter-check for continuity⤠when the element is cold and loss of continuity when the element is warmed â(or vice âversa for normally open versions)-andâ a hair dryer or heat gun⤠can⢠be used to âŁverify switching at the⣠expected temperature. Common fieldâ symptoms of a failed or out-of-spec â˘termination âswitch include prolongedâ defrost cycles, frequent heater operation without defrostâ completionor premature termination of âŁdefrost â˘resulting in frost buildup; the list below summarizes practical âŁindicators and âchecks.
- Symptom:⣠Continuous defrostâ heater voltage âor â˘never-ending defrost â˘cycles -â check for stuck-closed switch.
- Symptom: Frost⤠accumulation and no defrost – check for switch stuck-open or wiring/connector failure.
- Check:⢠Verify connector type â˘and⤠mounting fit before replacement to ensureâ proper sensing contact.
- Check: Use â¤aâ multimeterâ to â˘measure continuity⣠cold vsâ warmed to confirm switching action âand approximate â˘setpoint behavior.
| Item | description |
|---|---|
| Part â¤number | 216731001 Frigidaire âRefrigerator termination Switch |
| Type | Bimetal temperature-actuated cutoff (termination thermostat) |
| function | Endsâ defrost cycle and protects âŁheater/control circuits âbyâ opening/closing âŁcontactsâ at a specified âtemperature |
| Connections | Standard spade terminals; confirm orientation and⢠harness â˘compatibility with âservice manual |
How the â˘216731001 Frigidaire⢠Refrigerator⤠Termination Switch Operatesâ Within the Appliance’s âDefrost System
The⤠216731001â Frigidaireâ Refrigerator Termination Switch is a thermostatic cutoff mounted adjacent to âthe evaporator â¤that monitors coil temperature during⢠the âdefrost cycle. It is â¤a series safety device for â˘the âdefrost heater: whenâ the evaporator reaches the designed defrost temperature the switch opens and removes power from the heater,â preventingâ overheating of⢠theâ coil â˘and â¤surrounding components. In âpractice theâ part is a small bimetal or thermostat-style switch with spade terminals and âelectrical ratings âmatched to Frigidaire control circuits; replacing it with the same⣠part ânumber preserves mounting orientation, temperatureâ set âpointand terminal âcompatibility usedâ across specificâ Frigidaire model⢠families.
The switch â˘behaves as âa normally closed â device â¤at âlow evaporator temperaturesâ soâ the defrost heater can â˘operate when the âŁtimer or â¤control calls for it; as â˘the heater warms the coil â˘the bimetal element flexes and⢠opens the circuit âŁonce the target temperature is reached, âthen recloses âafter the â˘assembly cools. Common diagnosticâ approaches include continuity checks at the⣠switch acrossâ a⣠defrost cycle and verifying thatâ the heater only â˘receives voltage while the switch is âŁclosed. Typical failure â˘modes and observable symptoms are âlisted âŁbelow, followed by âa short technical referenceâ to aid selection⣠and testing.
- Symptoms of a failed closed â¤switch: prolonged heater operation, â¤melted insulation or higher-than-normal cabinet â˘temperatures.
- symptoms⣠of a failed open switch: incomplete defrost, â˘heavy frost/ice â˘buildup on the evaporator, cooling âperformance degradation.
- Practical checks: measure continuityâ with⣠an ohmmeter during a manual defrost;â inspect spade⣠terminals and mounting for corrosion or mechanical stress before â˘replacing.
| Item | Description |
|---|---|
| Type | bimetal/thermostatic termination switch, spade-terminal connections |
| Function | Opens to cut power⢠to âŁdefrost heater âwhen evaporator reaches defrost temperature |
| Compatibility | OEM replacement for âFrigidaire models âspecifying 216731001;⢠match⣠partâ number and terminal style |
common âFailure Symptoms and Electrical Indicators of a Defectiveâ Termination Switch
The 216731001 Frigidaireâ Refrigerator termination Switch âis a mechanicalâ temperature-actuated device that⤠ends the â¤defrost âcycle by interrupting power âto theâ defrost heater once â¤the⢠evaporator reaches its termination temperature. âInâ compatible Frigidaire â˘models⢠thisâ part is mounted⤠to the evaporator or ânearby refrigerant tubing âŁto sense coil temperature; it is closed while the âŁcoil â˘isâ coldâ to allowâ the heater to run and opens as⣠the coil⢠warmsâ to stop the heater.â Knowing this behavior âis essential for correct replacement and for ensuring proper thermal contact and orientation duringâ installation, since incorrect mounting can â¤produce false readings and prematureâ failure.
Electrically,â a defective termination switch â˘will present either âŁa⤠constant open or âconstant closed âŁcontactand each failure mode⣠has characteristic symptoms âand âmeasurable indicators.â Common field observations â˘include heavy frost accumulation and âreduced cooling when the switch âŁisâ stuck open, âŁor continuous heater operation, thawing and water â˘leakage when it is stuck⣠closed; â˘electrically, â˘these conditions showâ up as infinite⣠resistance (open) or near-zero resistance (closed) onâ a continuity âŁcheck. Practical troubleshooting steps for technicians include verifying â¤continuity with power removedand confirming line voltage to the heater during a service-initiated defrost to ensure the switch is âŁchanging â¤state as âthe evaporator warms.
- Heavy frost buildup / poor cooling – âŁswitch⣠stuck⢠open; âno⤠continuity when coil is cold.
- Continuous defrosting / water â˘leaks âŁ- âŁswitch⢠stuck closed; continuity⤠present at all temperatures and line voltage may be âpresent outside of a defrost cycle.
- Intermittent â˘defrost – high-resistance or intermittent contact⤠producing âfluctuating continuity readings â¤and possible voltage drop under load.
| item | Description |
|---|---|
| Continuity (cold) | Functioning switch: closed â¤(near⢠0⤠Ί). failed⤠open: âOL/infinite â¤resistance. |
| Voltage⢠during defrost | When closed,lineâ voltage is delivered to the â¤heater â˘(in North âamerica typically ~120⤠VAC). No voltage âŁat expected time indicates â¤an open â˘switch or⤠upstream control fault. |
Compatibility, Replacement Considerationsand â¤Installation⢠Best âPractices â˘for the Termination Switch
The 216731001 Frigidaire Refrigerator⣠Termination âSwitch â¤is a temperature-actuated safety⤠device that senses evaporator-coil temperature and interrupts the defrost heater circuit onceâ the coil reaches the termination setpoint. âŁFunctionally itâ is a â˘small, selfâresetting⢠thermal switch (commonlyâ a bimetal âelement) mounted toâ the evaporator âorâ heater bracket; at low coil temperatures the switch allows⤠current to pass to the heaterand as the coil âwarms during defrost the switch opens to stop heating.Aâ failed or âmisinstalled switch⢠will either â¤prevent the defrost⣠cycle from ending-causing unnecessary heater run⣠time and higher energy â˘draw-or âwill âopen⣠prematurely and allow ice buildup⣠on the evaporator, so understanding its electricalâ behavior and mounting interface⣠is essential for diagnosis and repair.
For replacement and installation, match theâ 216731001⣠Frigidaire Refrigeratorâ Termination Switch by mechanical â¤mounting style, terminal/harness typeand temperature â¤characteristic rather than relying solelyâ on visual similarity. Verify⤠compatibility with the control board and heater load,â then use âtheseâ practical checks and steps to ensure reliable operation:
- Confirm OEM part number and â¤compare terminal spacing and connector type before ordering.
- Inspect mounting clip⤠or adhesive location and ensure intimate âthermalâ contact with the coil or heater element.
- Measure⢠continuity with a âŁmultimeter â˘at knownâ temperatures (room temp âand â˘warmed coil) to confirm open/close⤠behavior; test again afterâ installation.
- Secureâ wires away from fan â˘blades and sharp edgesand⤠use proper âstrain ârelief; avoid compressing or bending the sensor element.
| Item | Description |
|---|---|
| Function | Temperature-actuated open/close deviceâ that âŁterminates defrost⤠heater operation |
| Mounting | Attached to evaporator coil or heater bracket; thermal contact and orientation affect performance |
| Electrical interface | Two-wire switch; match⤠terminal type or pigtail â¤connector to⢠harness |
| Common symptomâ of failure | Excessive⤠frost âbuildup or continuous heater operation during defrost âcycles |
Q&A
What is the 216731001 Frigidaire refrigerator termination switch?
The 216731001 termination switch is an OEM temperature-sensitive switch used in the âdefrost⣠systemâ ofâ some Frigidaire refrigerators. âIt senses the evaporator temperature⢠andâ opens to stop â˘power âto the âdefrost⢠heater once the⣠evaporator has warmed enough to terminate â¤theâ defrost cycle.
How â¤does the termination switch â˘affect the refrigerator’s â˘defrost cycle?
During a âdefrost cycle⣠the switch is normally closed when the evaporatorâ is cold⤠so the heater can run.As the⤠evaporator warms, the âswitch opens âand cuts⣠power âto the heater, â˘preventing over-heatingâ and excessive melting. If âthe switch âstays open or âclosed âŁincorrectly the defrost cycle will either not run orâ run âtooâ long,causing âfrost build-up âor wet/warm â¤compartments.
What are common symptoms of a⣠failingâ 216731001 termination switch?
Typical symptoms include excessive âfrost/ice on the evaporatorâ or freezer walls (switch stuck open so heater never âŁgets power), continuous running defrost heater withâ waterâ leaking/melted ice (switch⣠stuck⣠closed), frequent â¤or no â˘defrost cyclesand resulting â¤warm â˘refrigeratorâ or freezer temperature problems.
How can a technicianâ or owner test â˘the termination switch?
Always disconnect power âfirst. Remove access panels to⢠exposeâ the switch âŁand disconnect the wiring. Use⢠a multimeter to â˘check⣠continuity: the âŁswitch should show continuity (closed) when cold and open when warmed above its cutout temperature. âTo test dynamically, chill the sensor (ice/water) âŁand confirm continuity, then â¤warm it slightly andâ verify it opens. Consult the appliance tech â˘sheet for the exact temperature specs.
Where is the 216731001 termination switch located in the refrigerator?
It isâ typically mounted on or near the evaporator â˘assembly⤠(on the⢠evaporator coil,â mounting bracketor âthe suction line) behind the freezer ârear âpanel. Location⣠varies by model; remove the rear interior panel⣠of the freezer compartment to⤠access â¤it.
Isâ replacing the âtermination switch difficult and âdo Iâ need⢠anyâ special tools?
Replacement âis moderate-difficulty: basic⣠hand â˘toolsâ (screwdrivers,⣠nut drivers), a multimeter for testingand care âwhen handling the evaporator âareaâ are usually âsufficient. âSteps:⣠disconnect power, remove freezer â¤backâ panel, document wire positions,⢠removeâ the old âswitch, install⣠the ânew switch and secure it âin the same position, reconnect wiring, reassembleand test.⢠No â˘special calibration⢠is normally â¤required.
Shouldâ I replace any âŁother parts⣠when replacing theâ termination switch?
If the â˘termination switch failed, inspect the defrost heater and⤠the defrost control (timer âŁor electronic control âboard) as defrost â¤faults frequently enough âŁinvolve multiple components. It’s common practice to test the heater for continuity and theâ control for proper operation; replace any âpart that âfails testingâ to ensure the defrost system works⣠reliably.
How do âI verify I haveâ the correct replacement part and where can I buy â˘216731001?
Verify compatibility by âŁchecking⢠the refrigerator modelâ number against the part listing on the manufacturer’s parts diagram or reputableâ partsâ suppliers.â Use the appliance model number â˘(usually⤠on a plate inside the cabinet) to cross-reference.â The part is available⣠from Frigidaire/Electrolux parts distributors and major âappliance⤠parts retailers online;⣠buyingâ an âOEM part⤠minimizes fitment issues.
Inâ Conclusion
The â216731001 Frigidaire refrigerator terminationâ switch serves as a critical âsafety and control component inâ the appliance’s temperature-management⣠system.⢠by monitoring temperature conditions âand interrupting the defrost or relatedâ circuit when preset thresholds are reached,⤠the termination âswitch helps prevent⢠overheating, supports consistent cooling â¤performanceandâ contributes to⣠the refrigerator’s overall reliability⢠and energy efficiency.
Becauseâ symptoms of a⣠failing termination âŁswitch-such as excessive frost buildup, erratic⣠temperatures, âor interrupted defrost âcycles-can mimic other faults, proper diagnosis⤠is⤠essential.â Testingâ with appropriate â˘tools â¤or consulting the manufacturer’s service â¤documentation ensures the underlying⤠causeâ is identified before replacement.When â˘replacement is necessary, using the correct OEM part and⣠following recommended service procedures âŁpreserves⤠safety, functionalityand warrantyâ coverage; where uncertainty remains, âprofessional service is advisable.
Professional Appliance Service
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