131298300 Frigidaire Control Thermostat is a temperature-control component used in Frigidaire appliance control assemblies. It is a switching thermostat designed to sense temperature and open or close electrical contacts to control heating or cooling loads; depending on the appliance design it can be an electromechanical (bimetal or capillary) device or a control-level thermostat that interfaces directly with a control board.
Inside an appliance the 131298300 thermostat provides the primary setpoint or safety switching function for temperature management and interfaces with systems such as heating elements, compressors, evaporator fans, defrost circuits, relays and the main control board. It responds to the sensed temperature and either permits or interrupts power to downstream components, and its correct operation affects cycle timing, temperature stability and safety interlocks. Mechanical mounting location and electrical connections determine whether it regulates oven temperature, refrigerator compartment temperature, or another controlled zone within the appliance.
This article explains how the 131298300 thermostat functions, how to verify model compatibility and electrical ratings, common failure symptoms (for example persistent temperature drift, no switching action, or erratic cycling), step-by-step diagnostic checks a technician can perform (continuity and resistance measurements, inspection of capillary/tubing and terminals, and interaction checks with associated relays or boards), and practical replacement considerations including correct wiring, mounting orientation and safety precautions during service.
Table of Contents
- Function and Role of the Control Thermostat in Frigidaire Refrigeration Systems
- How the 131298300 Frigidaire Control Thermostat Works Inside the Appliance: Sensor, Switches and Circuit Interface
- Common Failure Symptoms and Diagnostic Indicators for the Control Thermostat
- compatibility, Replacement Considerations and Installation Procedures for the 131298300 Frigidaire control Thermostat
- Q&A
- Key Takeaways
Function and Role of the Control Thermostat in Frigidaire Refrigeration systems
The 131298300 Frigidaire Control Thermostat functions as the user-accessible temperature regulator that senses cabinet conditions and makes or breaks the cooling circuit to maintain the selected temperature. In typical installations the device interrupts the mains-voltage feed to the compressor and the evaporator fan via internal switching contacts, using either an electromechanical sensor (bimetal or capillary) or an electronic sensing element depending on the specific model. The thermostat provides an adjustable setpoint and built-in hysteresis (deadband) so the compressor cycles at controlled intervals rather than responding to every small fluctuation; this behavior reduces wear on the compressor and stabilizes internal temperatures during normal usage and door openings.
From a service viewpoint, compatibility is persistent by terminal layout, contact ratings, and mounting style rather than by appearance alone; replacing the part with the same model number is the moast reliable method to ensure correct electrical characteristics and fit. Common diagnostic steps include verifying that the thermostat changes continuity at the setpoint (using a multimeter while rotating the control), inspecting terminals for corrosion, and observing cycling behavior under load-continuous run, failure to close, or rapid short cycling are typical failure symptoms. Technicians should consult the appliance wiring diagram and confirm that the thermostat’s contact rating matches the compressor start current before installation.
- Primary function: control compressor and evaporator fan operation to hold the setpoint.
- Key attributes: adjustable setpoint,hysteresis,rated switching contacts,specific terminal/mounting configuration.
- Service indicators: no cooling, continuous run, or rapid on/off cycling suggest thermostat or wiring fault.
| Item | Description |
|---|---|
| Sensor type | Electromechanical (bimetal or capillary) or electronic, model-dependent |
| Terminal labeling | Typically common (C) and a Normally Open/Closed contact; verify with wiring diagram |
| Failure symptom | loss of temperature control, compressor running nonstop, or rapid cycling |
How the 131298300 Frigidaire Control Thermostat Works Inside the Appliance: Sensor, Switches and Circuit Interface
The 131298300 Frigidaire Control Thermostat combines a temperature sensor and switching interface to regulate refrigerator functions such as compressor cycling, evaporator fan operation, and defrost initiation. Internally the part typically uses a temperature-dependent element (a thermistor or similar sensor) whose resistance changes with cabinet temperature, coupled to either mechanical switch contacts or an electronic output that the main control board interprets. The sensor monitors the air or evaporator coil temperature and, when the setpoint is reached, the switch or electronic output changes state to open or close circuits that control power to the compressor or trigger defrost sequences; mounting location and terminal assignments determine the exact role in the appliance harness, so correct orientation and pin mapping are required for compatibility and safe operation.
- Key interface traits: sensor varying resistance, switching contacts or signal output, and discrete terminals labeled for common/NO/NC functions.
- Common failure symptoms: continuous compressor run, short cycling, no cooling, or erratic defrost behavior indicating an intermittent sensor or switch contact fault.
- Practical check points: verify harness pinout,measure continuity/state change across switch terminals at temperature extremes,and measure sensor resistance to confirm a temperature-dependent response.
The thermostat can be mechanical or electronically integrated; mechanical versions provide direct contact closures whereas electronic versions provide a low-level signal to the control board that then drives relays or solid-state switches. For replacement or troubleshooting, compare the 131298300 Frigidaire Control Thermostat against the appliance wiring diagram and parts list to ensure terminal functions and mounting match the original part. Technicians should test by observing the state change across the switching terminals as the sensed temperature crosses the expected setpoint and by confirming that the sensor’s resistance varies smoothly with temperature-abrupt jumps or open circuits indicate a defective unit or connector issue rather than a control-board fault.
| Item | Description |
|---|---|
| Sensor | Temperature-dependent element (thermistor or similar) that provides the control input |
| Switch | Mechanical contacts or electronic output that change state at setpoints to control circuits |
| Terminals | Common and switching terminals (COM, NO, NC) that interface with the appliance harness; verify pinout before replacement |
Common Failure Symptoms and Diagnostic Indicators for the Control Thermostat
The 131298300 Frigidaire Control Thermostat is a temperature-sensing switch that controls compressor and fan operation by opening or closing electrical circuits as the refrigerated compartment temperature changes. In practise this part senses the cabinet temperature and provides the control signal that starts and stops cooling components; compatibility is determined by terminal layout, mounting style, and electrical ratings, so match the part number and terminal configuration to the appliance model. the control can be a mechanical switch or part of an electronic control assembly, and failures commonly affect system cycling, temperature regulation, or defrost sequencing rather than the compressor or fans themselves.
Technicians diagnose faults by correlating symptoms with electrical behavior: a thermostat that never closes under a cooling call will leave the compressor off despite correct supply voltage, while a thermostat that never opens will cause continuous compressor run or short cycling. Use a multimeter to check for continuity across the thermostat contacts while changing the setpoint (cold setting should typically close the cooling circuit) and measure for correct line voltage at the thermostat input and switched output during operation.Always disconnect power before making continuity checks; practical troubleshooting often includes verifying supply voltage present at the thermostat, confirming a change of contact state when adjusting the control, and inspecting for intermittent contact, corrosion, or mechanical binding that produces the listed symptoms.
- Compressor dose not start when thermostat is set to call for cooling (no contact closure).
- Compressor runs continuously nonetheless of setpoint (contacts stuck closed or shorted).
- Erratic or rapid on/off cycling (intermittent contacts or thermal drift).
- Cabinet temperature drifts or fails to stabilize (sensor/calibration issues).
- Audible clicking at the thermostat or visible corrosion at terminals.
| Item | Description |
|---|---|
| continuity behavior | Closed between common and cooling output when set to call for cold; open when satisfied. |
| Voltage check | Line voltage should be present at the thermostat input; output shows switched voltage only when contacts close. |
| Physical inspection | Look for terminal corrosion, loose connectors, heat damage, or mechanical binding that can cause intermittent operation. |
Compatibility, Replacement Considerations and installation Procedures for the 131298300 Frigidaire Control Thermostat
The 131298300 Frigidaire Control Thermostat is an electromechanical temperature regulator used on specific Frigidaire refrigeration units to open and close the cooling circuit based on sensed temperature. It typically provides a switched output to the compressor relay and may interact with defrost or fan circuits depending on the appliance wiring.Behaviorally, the thermostat presents a defined switching setpoint with built-in hysteresis, so technicians will observe a distinct mechanical “click” during adjustment or when the cabinet temperature crosses the setpoint. Common failure modes include a contact that remains welded closed (continuous compressor run), an open contact (no compressor operation), or intermittent cycling caused by loss of sensor sensitivity; these symptoms help isolate the thermostat versus other components such as the start relay, evaporator thermostat, or temperature sensors.
Replacement requires matching mechanical mounting, terminal arrangement and sensor type (capillary bulb versus internal sensor) rather than only matching the printed part number; an identical 131298300 Frigidaire Control Thermostat guarantees pinout and calibration, while non‑OEM equivalents must be checked for compatibility. Before replacing, disconnect power, document and photograph the wiring, and avoid kinking or sharply bending any capillary tube or sensor lead during removal or reinstallation. After installing the replacement, verify continuity across switching terminals while adjusting the control, confirm correct bulb placement or sensor seating in the evaporator or air channel, and observe at least one complete on/off cycle under normal load to confirm proper operation.
- Verify model compatibility: compare mounting, terminal layout, and sensor type against the service manual or existing part.
- Safety steps: power off, tag wires, and use insulated tools for terminal work.
- Installation checks: avoid capillary kinks, ensure secure terminal connections, and restore power only after mechanical reassembly.
| Item | Description |
|---|---|
| function | Switches compressor/related circuits based on sensed temperature; includes setpoint and hysteresis. |
| Sensor type | Capillary bulb or internal sensor depending on fridge model; confirm before replacement. |
| Compatibility checks | Match mounting footprint, terminal configuration, and control voltage; verify against appliance wiring diagram. |
Q&A
What is the Frigidaire part 131298300 control thermostat and what does it do?
Part 131298300 is the temperature control thermostat used in certain Frigidaire refrigerators. Its job is to sense cabinet temperature and open or close an electrical contact to turn the compressor and cooling system on and off so the compartment holds the set temperature. It is indeed a control device, not a compressor relay or defrost timer.
What symptoms indicate the 131298300 thermostat may be failing?
Common signs of a failing thermostat include the compressor running continuously, the compressor not running at all, inconsistent temperatures (too warm or too cold), or the fridge cycling irregularly. You may also see frequent short cycles or long run times that don’t match the temperature setting. These symptoms can also be caused by other components,so testing is required to isolate the thermostat.
How do I test the 131298300 thermostat safely?
Turn power off to the refrigerator before accessing wiring. remove the thermostat from its mount so you can access its terminals. With a multimeter set to continuity or low ohms, change the thermostat knob to a cold setting (call for cooling) – the thermostat contact should show continuity (near zero ohms).Turn the knob toward warm/off and continuity should open. If you prefer an in-circuit test with power on, measure voltage across the thermostat output while changing settings, but only do this if you are experienced and take proper safety precautions. If the contact does not change as the control is adjusted, the thermostat is likely bad.
How do I replace the 131298300 thermostat?
unplug the refrigerator. Locate the control (usually behind the temperature knob or inside the control housing). Take a photo of the wiring for reference, then disconnect the wires or connector. Remove any mounting screws and carefully remove the sensor or capillary tube if present-do not kink or crush it. Install the new thermostat by reversing the removal steps, reattach wiring exactly as it was, secure the control, and restore power.After replacement, verify the compressor and fans operate and that the refrigerator begins to cool. If you’re not comfortable working around electrical components or removing panels, hire a qualified technician.
Will 131298300 fit my Frigidaire model? How do I confirm compatibility?
compatibility depends on the refrigerator model and the specific control configuration. The safest method is to check your refrigerator’s model number and consult the official Frigidaire parts list or a reliable parts distributor to confirm that 131298300 is the OEM replacement for your model. You can also compare the old part’s label and connector, or use the model/model number lookup on parts websites. Don’t rely solely on visual similarity-verify with the model number or an OEM parts diagram.
Are there adjustment or calibration options for this thermostat if temperatures are off?
Most mechanical control thermostats only provide user adjustment via the temperature knob (a setpoint change), not fine calibration.If the refrigerator temperature is consistently off despite correct knob position,the thermostat may be inaccurate or failing and should be replaced. For digital systems or main control boards, calibration may be possible through diagnostics, but for this analog-style control, replacement is the usual remedy.
What wiring or connector issues should I watch for when replacing this thermostat?
Wire colors and terminal counts can vary by model. Before disconnecting, photograph the existing connections and label wires. Ensure replacement terminals match the original (number and function). Avoid forcing connectors-use the same type of spade or plug connector. If the replacement uses different terminal types, use appropriate adapters or replace the mating connector rather than rewire incorrectly. If you find damaged wires, repair them with proper connectors and insulation before restoring power.
Could other components cause the same problems as a bad thermostat?
Yes. Symptoms attributed to a bad thermostat (no cooling, continuous running, erratic cycling) can also result from a faulty start relay or capacitor, a stuck compressor contactor, a failed main control board, a defective temperature sensor, blocked airflow (dirty condenser or evaporator), or refrigerant issues. If thermostat tests good,proceed to test the compressor start components,fans,and check airflow and refrigerant system condition or call a technician for a full diagnosis.
key Takeaways
The 131298300 Frigidaire control thermostat plays a central role in regulating appliance temperature and maintaining consistent cooling performance. as the sensor and switching mechanism that governs compressor cycles, it helps preserve food quality, supports energy-efficient operation, and contributes to the overall reliability of the refrigeration system.
Accurate diagnosis and timely replacement of a failing 131298300 thermostat are important to avoid prolonged inefficiency or damage to other components. When troubleshooting, follow manufacturer guidance and safety precautions; use correct diagnostic methods and, where appropriate, source compatible replacement parts or engage a qualified technician to install, calibrate, and test the thermostat to restore proper operation.
Professional Appliance Service
If your appliance requires professional diagnosis or repair, visit
Revolff Home Services
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For local appliance service information see
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Replacement parts for many appliance models can also be found at
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