4387562 Whirlpool Refrigerator Thermostat Temperature Cold Control is a temperature-regulation⣠component used in Whirlpool refrigeration appliances; âit serves as the user-adjustable control that âŁsenses âŁcabinet temperatureâ and actuates⢠the cooling system to maintainâ a setpoint. Technically, this⤠component functionsâ as âa temperature controller⣠(implemented in âvarious models as âan electromechanical thermostat, â˘bimetal switchor an electronic temperature control/thermistor interface) andâ is typically packaged as a modularâ control assembly or knob-mounted control âinâ the⤠refrigerator’s control âcavity or âchassis.
Inside the appliance, âthe â˘4387562 â¤thermostatâ monitors evaporator orâ cabinet air âtemperature and closes or opens⢠electrical circuits to driveâ downstream systems – primarily the compressor motor (via relay/start circuit), â˘evaporator and condenser fans,â and, in some designs, theâ air-damper or defrost âcontrol⢠logic. It thus interfaces wiht the mainâ power feed, relay or control board inputs, temperature sensing â˘elements, âand the user setpoint mechanism; âproper sensing location,⤠correct electricalâ ratingand reliable switching are all critical to correct cycling of the refrigeration âŁsystem âand stable cabinet temperatures.
This article âŁwillâ describe â˘the âthermostat’s operating principle and âtypical implementations,⣠outline model âŁcompatibility and â˘electrical/connector considerations, list common âfailure symptoms⣠(such as continuous running, âŁintermittent cooling, failure to â˘respond to⢠setpoint changes, âor audible switchingâ anomalies)and â˘present practical troubleshooting checks â˘a â¤technician⣠can âperform (visual⤠inspection, continuity andâ voltage tests,⢠sensor resistance âchecks) as well as⤠replacement considerations (correct âpart selection,⣠mounting âandâ wiringâ practicesand safety precautions when servicing live circuits).
Table of Contents
- Functionâ and âRole of the Thermostat Assemblyâ in Refrigerant Temperature Regulation
- How the â4387562⤠Whirlpool âRefrigerator Thermostat Temperature cold Control interfaces with the Evaporator, Compressorand⤠Control Circuit
- Typical Failure Modes and Diagnostic Symptomsâ of the Thermostat Temperature Cold control
- Replacement Considerations,⤠Installation Procedure⣠and PostâInstallation calibration for âthe⤠Thermostat
- Q&A
- Key âTakeaways
Function and Role of âtheâ Thermostatâ assembly â¤in Refrigerant âTemperature â¤Regulation
The 4387562 â˘Whirlpool Refrigerator thermostat⤠Temperature âCold Control is⣠the temperature-sensing and âswitching element responsible for maintaining âthe⤠targetâ evaporator âtemperature âand, indirectly, refrigerant âstate. The assembly senses temperature in⤠the compartment or âevaporator âsensor well and opens or closes âan electrical âŁcontact to command the compressor or the refrigerator’s⢠control module. âBy interrupting power to âthe compressor,â the thermostat⤠controls refrigerant flow and phase (liquid/vapor proportions in the evaporator), â˘ensuring the evaporator surface âis cold enough to removeâ heat without icing excessivelyâ or allowing the compressor to â¤shortâcycle.
Functionally, âthe thermostat provides cyclic control with âbuiltâin switching⤠differential (hysteresis) soâ the system runs long enoughâ to reachâ effective⢠heat exchange but ânotâ so âŁlong that temperatures âovershoot. Technicians diagnose the part by checking for expected continuityâ changesâ as the â˘sensor bulb or probe warms and cools, âŁconfirming terminal voltages and matching terminal wiring âto âthe replacement part. Common âfailure modes includeâ welded contacts that â˘cause âcontinuous run (overcooling)⣠and open contacts that prevent the âcompressor from starting (no cooling). Practical service â¤steps include verifying electrical ratings and âterminal mapping on the âreplacement, measuring⤠continuityâ across the thermostat⤠at âknown âtemperaturesand replacing âthe⣠assembly with the correct â˘OEM part when terminalsâ or the sensor have degraded.
- Features:â temperature sensing, â¤electromechanical switching, switching differential
- Symptoms of failure: continuous run,⢠no start, wide temperature âswing,⣠compressor shortâcycling
- Service⤠checks: continuityâ vs. temperature, terminal â¤voltage verification, correct part and⣠rating â¤confirmation
| Item | Description |
|---|---|
| Part | 4387562 Whirlpool Refrigerator â˘Thermostat âTemperature Cold Control – electromechanical thermostat assembly for⢠applicableâ Whirlpoolâ models |
| Primary role | open/close compressor⣠circuit to regulate⣠evaporator temperature and refrigerant state |
| Diagnostic note | Test continuity at different âtemperaturesâ and⤠confirm terminalâ wiring and electrical âratings before replacement |
How the⢠4387562 whirlpool âRefrigerator Thermostat Temperature Cold Control âInterfaces with the Evaporator, Compressorand Control Circuit
The 4387562 â˘Whirlpool Refrigerator Thermostat âTemperature Cold Control is an electromechanical temperature-controlled switch that provides the âuser setpointâ and switching action between the refrigerated compartment/evaporator and the⤠refrigerator’s drive⤠circuitry. Its sensing element âmonitors evaporator or cabinet air temperature and changes state to close or âopen a contact; âclosingâ the⢠contact deliversâ power to âtheâ compressor start circuit (usually â¤viaâ a⣠relay or the control board) and frequently enough coordinates the evaporator fan. because the thermostat only provides a âŁswitchingâ signal, it does not drive the compressor âdirectly – the appliance control circuit interprets that switch closure and âapplies line voltage through the compressor relay, start âdevice, âand anyâ protective time delays or overloads built into the system.
- Primary functions: â˘temperature sensing, setpointâ adjustmentand âŁswitching the compressor/control relay.
- Common âfailure âsymptoms: noâ compressor âŁoperation â¤(open contact), continuous run or overcooling â˘(stuck closed)or â¤erratic cycling affecting evaporator⣠frost⢠behavior.
- Compatibility note: replacement â¤must match the original âswitching type and⢠terminal configuration so the control board or ârelay can accept its contact closure.
Technically, the thermostat regulates evaporator⢠temperature by cycling the compressor to maintain the coil and circulating air within the setâ range;â each closureâ energizes âthe â¤compressor circuit and begins refrigeration,â lowering evaporator âtemperature until the thermostat⤠opens. In systems with an⤠electronicâ control âboard the âthermostat remains a discrete on/off⢠input; â˘in simpler electromechanical designs it directly controls a relay or contactor. For service or troubleshooting, technicians should â˘verify that the thermostat’s contacts change state at the appropriate temperature and confirm the âcontrol circuit components (relay,â overload, â˘start â˘device) respond correctly – a continuity check across the thermostat while âchanging â˘the setpoint âprovides âa speedyâ functional test⢠before replacing⢠other⣠components.
| Item | Description |
|---|---|
| Function | Provides temperature âŁsetpoint and closes/open contacts to command compressorâ and fan operation. |
| Interface | SPST-style switching interface to compressor relay or control board;â does not supply compressor motor⤠current directly. |
| Symptoms ofâ failure | No cooling,⤠continuousâ running, erratic cyclingor⣠incorrect⢠defrostâ timing due⣠to âmisplaced cycling. |
| Serviceâ tip | Match terminal layout and switching type⤠when replacing; verify contactâ operation âŁwith an ohmmeter while varying temperature⤠or setpoint. |
Typical Failureâ Modes and âDiagnostic Symptomsâ of the Thermostat Temperature Cold Control
The 4387562 Whirlpool Refrigerator Thermostat Temperature Cold Control is a simple electromechanical temperature switch that â˘cycles the compressor and âŁevaporator fanâ by opening â˘and closing aâ contact based on the sensed compartment temperature. âCommon failure modes include âa contact that is stuck openâ (no âcompressor operation âand rising temperatures),â a contact stuck â¤closed⢠(continuousâ run â¤and âpotential overcooling or excessive frost), intermittent â¤contact (short cycling âor â˘audible âclicking)and⢠contact degradation that increases⣠resistanceâ and⣠causes poor âcompressor âstarting.⣠Mechanical⢠wear,⢠contamination of the âcontact surfaces, â˘broken adjustment⣠shaftsor degraded⤠wiring/connectors are typicalâ field defects; compatibility checks should confirm terminal â¤arrangement and mounting orientation⢠before replacing âthe control on â¤a specific Whirlpool modelâ because âdifferent housings or sensor placements can affect performance.
Technicians diagnose â˘thisâ part by correlating observable âsymptoms with⢠electrical behavior and using basic bench tests. Disconnect power before âtesting, then â¤use â˘an ohmmeterâ to verify⣠continuity â¤across the thermostat âat â˘different setâ positions â¤(closed on colderâ settings, âopen âon warmer â˘settings); âŁa closed âcontact should read near zero ohms, while an open contact is effectively infinite. Additional useful checks include verifying line voltage to â¤the thermostat, jumping âŁthe stat to determine whetherâ the compressor runs (isolates⤠wiring⤠versus control),â and inspecting âconnector terminals for âcorrosion or âhigh-resistance joints.⤠Practical diagnostic symptoms are listed below to assist fault isolation:
- Compressor never starts, âbut lights and fans haveâ power – â¤thermostat contact likely⢠open or wiringâ fault.
- Compressor runs continuously and freezer overcoolsâ – thermostat contact âlikelyâ stuck âŁclosed or misadjusted.
- frequent short cycling with audible clicks – âŁintermittent contact â¤or a âfailing bimetal element.
- Normal cycling but⣠poor⣠cooling â˘or slow⤠pull-down – high contact resistance or⤠poor compressor⤠start due to partial contact.
- Uneven frosting patterns or temperature swings – placement/misalignment of â˘sensor â¤or gradualâ calibration⢠drift.
| Item | Description |
|---|---|
| Typical bench reading | Closed â â0-2 Ί; Open â= âOL â˘(infinite). Verify across terminals while changing dial. |
| Quick isolation test | Apply a jumper across stat terminals to force compressor; âif compressor runs, replace âthermostat or repair harness. |
Replacement Considerations, Installation Procedure and PostâInstallation calibration â¤forâ the Thermostat
The 4387562 Whirlpool⤠Refrigerator Thermostat Temperature Cold Control is a⣠mechanical control that regulates compressor runtime by opening âand âclosing â¤an internal contact in responseâ to⢠temperature sensed âby its capillary or⢠air-sensing element. Replacement considerations includeâ matching the electrical ârating âŁ(typically 120 VAC in Northâ American models), âterminal layout and connector type, capillary âlength and mounting clip location, âandâ ensuring the sensingâ element⣠occupies the same âthermal surroundingsâ asâ the âoriginal (cabinet âŁair âpocket or evaporator⢠well). âCommon failure modes â¤technicians âencounter â¤are open⢠or intermittent contacts, a ruptured capillary, corrosion at spade terminals,â or⢠a mislocated âsensing⤠bulb; such as, transferring âa thermostatâ with a â˘longer/shorter capillary or seating the bulb⣠in a⢠different⤠position can produce incorrect cycling and sustained âwarm temperatures despite theâ compressor âŁrunning.
- Verify part âfit: match terminalâ positions, connector type, âcapillary⢠lengthand âvoltage rating before installation.
- Disconnect power ⤠and⢠label wiring or photograph the connections to ensure correct reassembly.
- Check continuity and switching⤠action with a multimeterâ across⢠thermostat terminals â¤while rotating the control.
- Mount⣠the sensing â˘bulb in theâ original clip or pocket âand seal the grommet â¤to prevent air leaks⤠that alter sensing.
| Item | Description |
|---|---|
| Part number | 4387562â Whirlpool Refrigerator Thermostat Temperature⤠Cold Control |
| Voltage | 120 V AC (typical) |
| Sensing element | Capillary âŁbulb (mechanical bimetal/capillary sensor) |
Install the replacement by âremoving the control âhousing,â transferring or reconnectingâ the â˘wire âconnectors exactly as foundand securing⣠the thermostat to its bracket so the capillary is not kinked âor under tension. After restoring power,perform a post-installationâ calibration by â˘placing a calibrated thermometer in the refrigerator âcompartment,setting âthe âthermostat âŁto the⣠nominal mid-point,and allowing at least 12-24 hours for âthermal stabilization; â¤observe compressor⢠run/rest cycles andâ internal temperature drift. If temperature is off by several degrees, use small incremental adjustments of the âcontrol â(one notch at a time) âand âre-run a stabilization period; âuse multimeter checks to confirmâ that the⢠thermostat closes at âthe expected dial positions and thatâ line âvoltage reaches⣠the âŁcompressor â˘whenâ the thermostat is closed.If the thermostat âfunctions electrically but temperature⣠control is still â˘incorrect, verify evaporator airflow, door⢠seals,⢠and compressor/relay components⤠before assuming thermostat⤠failure.
Q&A
What âexactly is the⤠4387562 Whirlpool Refrigerator thermostat⤠(Temperature âCold Control)?
The 4387562⣠is the temperature control thermostat (frequently enough âŁcalledâ the⣠coldâ control) used in many Whirlpool-family refrigerators. It senses cabinet â˘temperature⤠and opens or closes âthe circuit to⢠theâ compressor â¤and fans to⣠maintain the set âŁtemperature. It is âaâ user-adjustable control⢠behind⣠the temperature knob or electronic interface and is a mechanical/electromechanical switching device ârather than⤠an âelectronic control board.
Which refrigeratorâ models is âpart 4387562 compatible⣠with?
This partâ is used across a range of âwhirlpool, Kenmore, KitchenAid âand some Maytag refrigerators. Compatibility depends⤠on the exact model and control housing. Always confirm fit by checking yoruâ refrigerator’s model numberâ and âcross-referencing theâ part number with the manufacturer’s parts list or a reliable parts supplier. Do not rely solely on visual similarity.
What are common symptoms that indicateâ the 4387562 thermostat⣠has failed?
Typical signsâ include the refrigeratorâ running â¤warm or not cooling at all, the compressor not cycling on or off as the temperature changes, no change in cooling âwhen â¤the temperature knob is adjusted, âor the compressor running continuously irrespective of⣠the setting.Electrical failure of⤠the⤠thermostat can also cause⤠the compressor to never receive power (no start)⣠or to â¤short and trip a â¤breaker.
How can I âŁtest⢠theâ 4387562 thermostatâ to⢠see if it’s bad?
Unplug the refrigeratorâ first. âRemove the control housing to access the thermostat â˘terminals,and note or photograph the wire positions.Use a multimeterâ set to â˘continuity or ohms. Rotate the temperature knob from OFF â˘toâ the coldest setting while probing the thermostat terminals – you âŁshould âsee the âswitch⣠change stateâ (no continuity⤠in OFF,continuityâ in⢠a calling-for-cool setting). If the thermostat does not change continuity as you adjust⣠itor â˘it shows an open circuit at all settings, it isâ likely defective. If you’re unsure, compare behavior to âthe service⤠manual test âfor your model âor consult a technician.
Can I âreplace the 4387562 myself, â¤and âwhat are the basic replacement steps?
Yes, a competent DIYer⤠can⤠replace it. safety â¤first: unplug the fridge. Remove the temperature control housing or âbezel,pull off the â¤knob,and carefully âdisconnectâ the wiring (takeâ a photo to record wireâ locations). âUnscrew and â¤remove the old thermostat andâ install âthe new 4387562 in the same position. âŁReconnect wires to the identical terminals, reassembleâ theâ housing, restore powerand set the temperature.Allow the refrigerator 12-24 â¤hours toâ stabilize. if you’re â˘uncomfortable working âon electricalâ components, hire a qualifiedâ appliance technician.
After replacing the thermostat, âŁhow long until the refrigerator reaches the correct temperature?
Expect the refrigerator compartment to take 12-24⣠hours to reach âa â˘stable temperature after a thermostat âreplacement (longer if the fridge was âunplugged⤠forâ a while or left âwarm). Do âŁnot â¤judge performance instantly; monitor âwith a thermometer and allow⤠the compressor⢠cycles to âŁnormalize before making âŁfurther adjustments or calling for service.
Is the 4387562 âadjustable or âcalibratable⣠if âmy refrigeratorâ is too cold or âtoo warm?
the part provides selectable⣠settings via the temperature â˘knob (usually a numbered or cold/warm range). It âisâ not⣠a precision calibration device; adjustments are made⢠by changing⢠the knob setting. If the refrigerator remains âconsistently too coldâ or warm âdespite setting changes, the thermostat may be faulty or another⤠component⢠(thermistor, damper, âŁevaporator issuesor sealed system fault) may âŁbe causing the problem and should be diagnosed.
If replacing theâ 4387562 doesn’t fix the problem, what other parts âŁshould I check?
If âsymptoms continue after a known-good thermostatâ isâ installed, check â˘the start relay and overload⤠onâ the compressor, âthe evaporator⣠fan motor, â¤the â¤condenser fan, defrost system and heater,â door⣠seals and â˘gasketand any thermistors or electronic controls â˘(on models that⢠use them). Also⤠inspect for frost/ice buildup on the âevaporator (which can âŁindicate âdefrost failure) and ensure the condenserâ isâ clean. If⤠electrical or sealed-system issues â˘are suspected, contact a trained appliance âtechnician for further diagnosis.
Key Takeaways
The 4387562⤠Whirlpool Refrigerator Thermostat⣠Temperature âCold Control plays âa central ârole in âmaintaining consistent interior temperatures,cyclingâ cooling components appropriately,and protecting stored âfood fromâ spoilage. âAs a temperature-sensing and control element, its⢠correct operation contributes⣠directly to appliance âefficiency, frost managementand overallâ refrigeration performance.
Because temperature irregularities⣠and related symptoms can âariseâ from âmultiple âcauses, â¤accurate⣠diagnosis is⤠essential â˘to determine â¤whether â˘the 4387562 control is the root issue. Proper testing and evaluation-ideally performed⣠using manufacturer-recommended proceduresâ or by a qualified âtechnician-help avoid unnecessary part replacement and ensure safety. â¤When replacementâ isâ required, âinstalling the correct âcontrol and verifying system function afterward restores reliable temperature âregulation and extends the service life of the refrigerator.
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