131298300 Frigidaire Control Thermostat is a temperature-sensing control used to monitor and regulate thermal conditions inside a Frigidaire appliance. It functions as a control thermostat-a sensing element combined with switching contacts or an output signal-that commands heating or cooling circuits to maintain a setpoint and differential. As a discrete service part, it is intended to interface with the appliance’s control system to provide on/off or control input based on measured temperature.
inside the appliance the thermostat provides the feedback required for safe and stable operation: it senses temperature at a specific location and either directly switches power to loads (heating elements,gas valves) or sends a signal to the primary control board that then modulates compressors,fans,or ignition systems.Technically, the component’s key attributes are its sensing location and thermal coupling, setpoint and differential characteristics, contact ratings or signal type, and electrical terminal arrangement. It therefore interacts with power wiring, control circuitry, and sometimes safety interlocks; improper mounting, degraded sensor coupling, worn contacts, or incorrect ratings can produce erratic cycling, failure to reach temperature, or unsafe conditions.
In this article readers will find a practical technical overview of the 131298300 thermostat including how it functions, how to determine compatibility with specific appliance models, common failure symptoms to watch for (open contacts, contact welding, sensor drift, incorrect differential), step‑by‑step troubleshooting checks (visual inspection, continuity and resistance checks at ambient and heated conditions, verification of supply and switched voltages, and confirmation of proper sensor placement), and replacement considerations such as electrical ratings, terminal mapping, mounting orientation, and calibration or adjustment procedures. The aim is to provide technicians, engineers, and appliance owners with the diagnostic context and procedural guidance necessary to evaluate and, when appropriate, replace this control safely and correctly.
Table of Contents
- function and System Role of the Control thermostat in Frigidaire Refrigeration Units
- How the 131298300 Frigidaire Control Thermostat Works Inside the Appliance
- Common Failure Symptoms and Diagnostic Indicators for the Thermostat
- Compatibility, Fitment, Replacement Considerations, and Installation Procedures
- Q&A
- Closing Remarks
Function and System Role of the Control Thermostat in Frigidaire Refrigeration Units
The 131298300 Frigidaire Control thermostat functions as the primary temperature regulator in compatible Frigidaire refrigeration units, providing an electromechanical switch that senses cabinet or evaporator temperature and controls power to the compressor and associated fans. In operation the thermostat monitors temperature via an internal sensing element and closes or opens its switching contacts at the selected setpoint to energize the compressor relay, enabling on/off cycling rather than proportional control. The part is manufactured to match the original equipment’s electrical ratings and terminal layout for direct replacement in specified models; technicians should verify part compatibility against the appliance model number and wiring harness prior to installation.
Understanding its behavior helps diagnose common cooling problems: a thermostat stuck closed will cause continuous compressor operation and low temperatures, while a thermostat that fails open prevents compressor start and yields warm cabinet conditions. Useful troubleshooting steps include measuring continuity across thermostat terminals at diffrent dial settings,checking for intermittent contact or audible clicking,and confirming correct placement of any sensing elements or capillary tubes. Replace the thermostat when contacts are corroded or the unit does not change state as the dial moves, but also confirm the compressor start components and the sealed refrigerant system are functioning to avoid unneeded part swaps.
- Typical symptoms of thermostat fault: continuous run,no run,rapid cycling,or failure to change state with setpoint adjustment.
- Common diagnostic checks: continuity tests across terminals, visual inspection of contacts and wiring, and verifying the thermostat setpoint response.
- Installation note: match terminal arrangement and mounting to the original assembly; adapter plates or harnesses may be required on some units.
| item | Description |
|---|---|
| Type | Electromechanical temperature control (ON/OFF) |
| Voltage rating | Typical line voltage switching for household refrigerators (consult unit spec) |
| Function | Switches compressor and fan circuits at setpoint; provides user-adjustable setpoint control |
How the 131298300 frigidaire Control Thermostat works Inside the Appliance
The 131298300 Frigidaire Control Thermostat is a temperature-actuated switch that monitors the local surroundings inside the appliance and opens or closes an electrical circuit to regulate heating or cooling elements. Internally it typically contains a sensing element (capillary bulb or sealed sensor), a mechanical or solid-state switching mechanism, and an adjustable or fixed setpoint assembly; the sensing element detects temperature changes and moves the switch contacts to start or stop compressor motors, heaters, or control relays. In practical operation the thermostat provides a controlled hysteresis (differential) so the controlled device cycles on and off around the setpoint rather than oscillating rapidly, and its mounting location and exposure to air flow determine response speed and accuracy-for example, a bulb mounted near an evaporator will register cold sooner than one mounted in an outer cavity.
Compatibility: when replacing or diagnosing the 131298300 Frigidaire Control Thermostat, match electrical ratings, terminal configuration, and mechanical mounting to the original part; incorrect voltage or connector orientation can prevent proper operation or damage control circuitry. Typical failure modes observed in the field are contacts stuck closed (continuous run), contacts stuck open (no operation), erratic cycling due to degraded sensor response, or poor electrical connections. Technicians commonly verify operation with a continuity or resistance check while applying heat or cold to the sensing element and confirm that switching occurs at the expected temperature range before final installation; always isolate power before performing bench tests.
- Sensing element: bulb/capillary or sealed sensor to measure local temperature
- Switching function: opens/closes circuit to control compressor, heater, or relay
- Setpoint and differential: determines cycle thresholds and hysteresis
- Mounting and terminals: must match appliance harness and bracketry for compatibility
| Item | Description |
|---|---|
| Sensing element | Sealed bulb or sensor that transfers temperature to the switch mechanism |
| Switch type | Mechanical contact or solid-state output that interrupts appliance power |
| Typical tests | Continuity/resistance changes with applied temperature; observe switching at expected setpoint |
Common Failure Symptoms and Diagnostic indicators for the Thermostat
The 131298300 Frigidaire Control Thermostat functions as the user-accessible temperature switch that commands the refrigeration cycle by opening and closing an electrical circuit to the compressor and evaporator fan based on the sensed compartment temperature. In many Frigidaire systems this part is an electromechanical control with a sensing element and a setpoint mechanism; some model variants incorporate an electronic thermistor input with solid-state switching. Technically, the thermostat’s role is to establish the temperature deadband and provide reliable make/break contacts (or a controlled electronic output) so the compressor runs only when the sensed temperature exceeds the setpoint plus differential, and stops when the target is reached. Compatibility considerations include terminal layout, mounting method, and the control type (mechanical contact vs. electronic sensor) – these determine whether the 131298300 unit will interface correctly with the fridge’s harness, relay, and defrost control circuits.
Common failure modes show up as predictable electrical and behavioral indicators that are useful for diagnosis. If the compressor never receives power while the cabinet is warm or the thermostat does not produce an audible click when turned through the setpoint, the contact set may be open or the sensing element has failed; conversely, a compressor that never stops or the evaporator freezing solid points to a thermostat that is stuck closed or has lost its differential control. Practical bench checks include listening for the click at the thermostat knob, measuring continuity across the thermostat terminals at different setpoints, and confirming line voltage is present to the thermostat housing before the control. Visual inspection for pitted contacts, burn marks, corrosion at terminals, or broken mounting that alters sensor placement also often gives a definitive indication that replacement is necessary.
- No click when adjusting setpoint – likely open or failed contact.
- Continuous compressor run or frozen evaporator - thermostat stuck closed or incorrect differential.
- Short-cycling or intermittent cooling – pitted contacts, loose connections, or intermittent sensor readings.
- Compressor not running while fans or lights operate – check thermostat continuity and incoming line voltage.
| Item | Description |
|---|---|
| Continuity (call for cooling) | Closed contact ≈ near 0 Ω; indicates thermostat is completing circuit to compressor relay. |
| No audible click | Possible open/broken sensing element or internal failure; verify with continuity and setpoint sweep. |
| Terminal condition | Burnt or corroded terminals signal contact degradation – replace rather than repair for reliable operation. |
Compatibility, Fitment, Replacement Considerations, and Installation Procedures
131298300 Frigidaire Control Thermostat is the temperature-sensing and switching element that provides the control board with the condition information needed to start and stop refrigeration components.In practical terms the device will either present a contact closure or a variable electrical value (depending on whether the thermostat is a mechanical switch or an electronic sensor) that the main control interprets; mismatches between sensor type and control logic are the most common compatibility issue. Technicians should confirm the sensor type, terminal labeling, and physical mounting before installation as differences in probe length, sensing element (thermistor vs. bimetal), or connector pinout can produce incorrect cycling, system short-cycling, or no control signal at all.
When replacing the thermostat, follow safe, methodical procedures: disconnect mains power, document wiring positions, and preserve any mounting brackets or grommets that affect probe location. After installing the replacement, verify proper operation with a multimeter and by observing one or more complete cooling/defrost cycles - for example, confirm continuity closure at the expected trip temperature for a switch-type thermostat or verify the expected resistance curve for a thermistor against manufacturer references. Secure connectors, maintain correct probe insertion depth, and dry any seals before reassembly to prevent moisture-related faults; if the control board expects a contact closure but the replacement provides a variable resistance output, an adapter or different part will be required rather than a direct swap.
- Confirm part number and sensor type against the appliance model.
- compare terminal pinout and harness connector before disconnection.
- Document probe mounting depth and insulation/grommet placement.
- Test sensing element with a meter and verify correct duty cycles after installation.
| Item | Description |
|---|---|
| Typical function | Senses compartment/evaporator temperature and signals the control board to run or stop compressor/fans. |
| Common failure symptoms | Stuck compressor cycles, inability to reach set temperature, or continuous run due to open/shorted sensor or drifted setpoint. |
| Pre-install checks | Verify sensor type (switch vs. thermistor), terminal mapping, mechanical mounting, and perform continuity/resistance tests before reassembly. |
Q&A
What is Frigidaire part 131298300 and what does it do?
Part 131298300 is a refrigerator temperature control thermostat (mechanical control) used on many Frigidaire/related-brand refrigerators.It senses the cabinet temperature and closes or opens an internal switch to cycle the compressor and cooling system so the compartment maintains the set temperature.
How do I know if 131298300 is the correct part for my refrigerator?
Check your refrigerator model number (usually on a plate inside the cabinet or on the back) and use Frigidaire’s parts lookup or a reputable parts vendor to confirm compatibility. You can also remove the existing control and compare the part number and connector arrangement.Do not rely on appliance age or shape alone – verify the model and part number.
What are common signs that the 131298300 thermostat is failing?
Typical symptoms include the fridge not cooling or cooling inconsistently, the compressor running continuously or never running, temperature that is to warm or too cold despite changing the knob, or erratic on/off cycling. Note these symptoms can also be caused by a faulty start relay, sealed-system problems, door seals, or blocked airflow, so verify the thermostat before replacing it.
How can I test the 131298300 thermostat to see if it’s bad?
Always disconnect power first. Access the thermostat wiring and use a multimeter set to continuity or ohms. With the thermostat set to a cold/call-for-cooling position it should show continuity between the appropriate terminals; when set warm it should open. Turning the control should change the meter reading. You can also perform a temperature stimulus (ice or warm air) to observe contact change. Because terminal arrangements vary by model, photograph and label wires before disconnecting.If the switch does not change state as the dial or temperature stimulus is applied,the thermostat is likely bad.
Can I repair the 131298300 thermostat or should I replace it?
These thermostats are inexpensive and designed to be replaced rather than repaired. Internal contacts/wear are common failure points and are not reliably serviceable. In rare cases minor contact corrosion can be cleaned, but replacement is the recommended, safer, and longer-lasting solution.
What is the proper procedure to replace the 131298300 thermostat?
Unplug the refrigerator. Remove any trim or housing to access the control, then remove the knob and housing screws. Photograph and label the wire connections, then disconnect the terminals. Remove the mounting screws and swap in the new thermostat.Reconnect wires to the matching terminals, reassemble, restore power, and allow the refrigerator 24 hours to stabilize before judging temperature performance.
is 131298300 the same as a thermistor or an electronic control board?
No. 131298300 is a mechanical thermostat (a temperature-activated switch). A thermistor is a temperature-sensitive resistor used with electronic control boards in newer appliances. If your refrigerator uses electronic controls and thermistors, the mechanical thermostat will not be used on that model – confirm by checking the model parts list.
How should I set or calibrate the thermostat after replacing 131298300?
set the thermostat to the recommended mid setting for initial use (check the owner’s manual for guidance). If temperature is off after 24 hours, adjust the setting in small increments and allow another 24 hours for the temperature to stabilize.Some units may have a small calibration screw on the thermostat; only adjust that if you’re certain calibration-not a different fault-is the issue.
Where can I buy a replacement 131298300 and how much should I expect to pay?
You can buy 131298300 from Frigidaire authorized parts dealers,appliance parts websites,and some appliance repair shops. Prices vary with vendor and availability but typically range from inexpensive to moderate for a mechanical thermostat. Always buy from reputable sellers and confirm the part number and compatibility before purchasing.
Closing Remarks
The 131298300 Frigidaire control thermostat plays a central role in maintaining accurate temperature regulation and reliable cycling in compatible Frigidaire appliances. By monitoring temperature and signaling heating elements or control systems to engage or disengage, this component contributes directly to consistent cooking and baking results, energy efficiency, and overall appliance safety and longevity.
Because similar symptoms can arise from faulty sensors, wiring issues, or control boards, careful diagnosis is essential before replacing the thermostat. Proper troubleshooting-using diagnostic codes, continuity and resistance checks, and systematic elimination of other potential causes-reduces unnecessary parts replacement and ensures that the true source of the problem is addressed.
When replacement is required, installing the correct 131298300 part and following manufacturer-recommended procedures, safety precautions, and calibration/testing steps helps restore performance and prevents recurrence. For electrical or complex control-system work, engaging a qualified technician or authorized service provider is advisable to ensure safe, correct installation and to protect the appliance’s long-term operation.
Professional Appliance Service
If your appliance requires professional diagnosis or repair, visit
Revolff Home Services
for expert appliance repair services.
For local appliance service information see
Dryer repair Henderson
.
Replacement parts for many appliance models can also be found at
Reliable-Parts-Hub
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