131758600 Frigidaire Control Timer is a timed control module used in household appliances to sequence adn regulate cycle operations. As a control timer it can be an electromechanical or electronic timing device that provides timed switching of power and control signals to other subsystems; in practice the component combines timing circuitry with load‑switching contacts or solid‑state outputs and a connectorized interface to the appliance wiring harness.
Inside an appliance the control timer’s primary role is to advance the unit through its operational stages-spacing and coordinating events such as motor starts and stops, valve openings, heater or compressor activation, and defrost or drain intervals. It interfaces with user controls, door or lid interlocks, sensors and thermostats, and downstream loads (motors, solenoids, heating elements, relays or triacs), and it is typically mounted in the control panel or chassis where it can accept user input and communicate with the main wiring harness. Understanding whether the timer uses mechanical cams and contacts or solid‑state switching, the expected supply voltages, and the connector pin‑out is useful for diagnosis and safe handling.
In this article you will find a technical overview of the 131758600 Frigidaire Control Timer including how it functions, how to determine compatibility and correct replacement parts, common failure symptoms to look for, and practical troubleshooting steps such as visual inspection, continuity and voltage checks, and isolation testing. The article will also cover replacement considerations-matching harness connectors, mounting orientation, and basic safety precautions-so technicians, engineers and appliance owners can make informed repair decisions.
Table of Contents
- Function and Role of the Control Timer Module in Frigidaire Appliances
- How the 131758600 Frigidaire Control Timer Works: Internal Circuits, Signal Paths, and Timing Sequences
- Common Failure Symptoms, Diagnostic Indicators, and Electrical Faults of the Control Timer
- Replacement Considerations, Compatibility Matrix, and Installation Procedure for the 131758600 Control Timer
- Q&A
- Future Outlook
Function and Role of the Control Timer Module in Frigidaire Appliances
The 131758600 Frigidaire Control Timer serves as the sequencing and switching hub that governs timed events inside compatible Frigidaire appliances. Functionally, the module provides timed actuation of outputs-motors, heating elements, water valves, and indicators-either via electromechanical cams and contact sets or an internal timed motor drive with switch assemblies. In operation it translates a selected program state into a sequence of discrete electrical connections so that subsystems receive power in the correct order and for the correct duration; such as, advancing from a wash agitation interval to a drain/pump interval or switching heater elements on during a timed thermostat call.The timer’s internal contacts and drive mechanism determine the timing resolution and the types of loads it can reliably switch, so matching the part to the appliance’s control requirements matters for correct behavior.
- Symptom: cycle will not advance or stops mid-cycle (worn motor or broken drive)
- Symptom: intermittent operation or erratic switching (pitted contacts or loose connector)
- Symptom: complete loss of timed functions while other circuits still have power (timer contact failure)
- Feature: mechanical/electromechanical construction in many legacy models; requires exact part or harness match for compatibility
From a service outlook, the timer is replaced when mechanical wear or contact degradation produces repeatable faults; technicians verify supply to the timer motor, continuity through common switch paths, and harness pinouts before replacement. Compatibility is determined by the part number, mounting footprint, and connector arrangement-using the 131758600 designation or an OEM cross-reference ensures the replacement will provide the correct sequence logic and electrical ratings. Practical troubleshooting steps include measuring line voltage at the timer input with the appliance energized (with proper safety precautions), checking motor continuity, and visually inspecting cams and contacts for corrosion or burning. When replacing the module, transfer any actuator assemblies and ensure the harness orientation matches the original to avoid mis-sequencing of outputs.
| Item | Description |
|---|---|
| Primary role | Sequence and time control of appliance subsystems (motors, valves, heaters) |
| typical drive | Low-power synchronous timer motor with cam-operated switches in many models |
| Compatibility note | Match by part number and connector configuration (131758600 or OEM cross-reference) |
How the 131758600 frigidaire Control Timer Works: Internal Circuits, Signal Paths, and Timing Sequences
The 131758600 Frigidaire Control Timer combines a small synchronous timing motor with a cam-driven switch stack and a modest printed circuit for interlock and signal routing. Inside the assembly, the motor turns a cam pack that sequentially closes and opens sets of contacts; those contacts route mains and control-level power to the washer’s valves, motor, pump, heater, and indicator circuits in predefined intervals.The unit’s behavior is determined by the physical cam profile and contact layout,so correct replacement requires matching the terminal pattern and cam sequence to the appliance model to ensure each output actuates at the intended point in the cycle.
Signal paths in the timer are straightforward: incoming line and neutral are distributed through fuse or thermal protection to the timer motor and to the contact poles, while the cam-driven contacts complete circuits to individual loads according to the timing sequence. In practical terms this means the timer supplies power to the water inlet during the fill stage, then to the drive motor during agitation, and later to the drain pump and spin circuit; technicians can trace faults by checking continuity across specific contact pairs at known timer positions. Common diagnostic checks include verifying the synchronous motor runs at line frequency, confirming continuity of contact wafers in indexed positions, and ensuring connector pinouts match the machine harness; listed below are the primary internal functions you will encounter during troubleshooting.
- Motor drive: provides rotation and indexing of cam profile
- Contact wafers: switch mains to timed loads (valves,motor,pump,heater)
- Interlocks/protection: thermal fuses or microswitches integrated for safety
| Item | Description |
|---|---|
| Input Voltage | Line and neutral feed,frequently enough fused; powers motor and routed contacts |
| Drive Motor | Low-torque synchronous motor that sets cycle timing and cam position |
| Contact Wafers | Cam-actuated switch sets that sequence outputs to appliance loads |
Common Failure Symptoms,Diagnostic Indicators,and Electrical Faults of the Control Timer
The 131758600 Frigidaire Control Timer is a cam-operated electromechanical timer that sequences power to motors,heaters,valves,and other loads by mechanically opening and closing internal switch contacts as its synchronous motor advances the cam stack. In practice this timer routes mains-level voltages through specific contact sets for each step of a program; compatibility should be verified against the appliance model number rather then assumed, because faceplates and terminal assignments can vary between models. Typical failure modes produce deterministic symptoms (no advance, stuck in one step, or selective loads failing), and many diagnostics are based on whether the timer motor receives supply voltage and whether the contact sets show proper closure under load. Always disconnect mains power before performing continuity or visual-inspection tests.
- Timer will not advance while other functions work (timer motor open or seized)
- Appliance performs some functions but omits others (worn or burned contacts on specific switch sets)
- Intermittent operation or erratic sequencing (loose terminal, intermittent contact closure, or arcing)
- visible heat damage, discoloration, or burnt odor at the timer (high-resistance terminal or internal short)
- No power to any loads (supply feed to the timer or main-common contact failure)
| Item | Description |
|---|---|
| Timer motor supply | Expect mains voltage at the timer motor terminal while the cycle is advancing (commonly 120 VAC in North America); no voltage indicates upstream supply or fuse/thermal issue. |
| Switch contact behavior | Contacts should show continuity (near-zero ohms) when engaged; measurable resistance or open circuit when expected closed indicates contact wear, pitting, or broken traces. |
| Visual/electrical evidence | Burn marks, melted plastic, or a strong burnt smell correlate with high-resistance joints or arcing; these usually warrant replacement of the timer assembly rather than repair of individual contacts. |
Effective diagnostics combine visual inspection, static continuity checks, and live-voltage verification during an actual cycle: confirm mains feed into the timer, verify that the motor receives drive voltage at the expected program steps, then verify each load terminal is energized only when its cam-activated contact is closed. Such as, if a washer fills but never agitates and the timer motor is running, measure continuity across the agitation-contact pair during the agitation step; an open reading while the cam indicates closed implies internal contact failure or broken wiring. Intermittent faults are often revealed by a wiggle test at the terminal block and by watching for arcing or temperature rise with a thermal probe; if contacts are pitted or the cam stack is plastic-deformed, replacement of the 131758600 assembly or an OEM-specified equivalent is the practical remedy.
Replacement Considerations, Compatibility Matrix, and Installation Procedure for the 131758600 Control Timer
The 131758600 Frigidaire Control Timer is the timing and sequencing device that routes power to motors, heating elements, and sensors according to selected cycles. Depending on the appliance model this part may be an electromechanical cam-switch assembly or an electronic timing module; both variants perform the same logical role of switching circuits at defined intervals. Fault modes commonly seen with timer failures include failure to advance between cycle steps, loss of power to the heater or motor during a timed period, intermittent contact that causes partial cycles, and visible wear on the external shaft or selector. Diagnosing should confirm that the symptom originates at the timer (open/short contacts, inconsistent switch continuity) rather than downstream wiring, load components, or control boards that can present similar behavior.
before replacement verify the exact part number stamped on the existing unit, confirm connector pinout and harness fit, and match voltage and mounting orientation; replacements labelled 131758600 may fit multiple chassis variants but require matching mechanical gear orientation and the same connector type to function. A practical replacement procedure consists of powering down the appliance, documenting knob/selector position and wiring locations, removing fasteners, swapping the unit while aligning any drive cam or gearbox, and validating functionality with a short operational test cycle. Typical compatibility checks and quick installation steps are summarized below to guide technicians and experienced owners during a field replacement.
- Disconnect mains power and verify no residual voltage before touching terminals.
- Label harness connectors and remove the control panel to access the timer assembly.
- Compare connector shape and pin count; fit the replacement without forcing pins.
- Align the shaft/gear to the same index position as the old unit before securing.
- Run a diagnostic or short cycle to confirm sequencing and heater/motor activation.
| Item | Description |
|---|---|
| Part Number | 131758600 – verify against the stamping on the original timer and parts catalogue for model compatibility |
| Electrical | Match supply voltage and confirm continuity of switched circuits; replace if contacts show high resistance or intermittent operation |
| Mechanical Fit | Mounting holes, shaft diameter, and cam orientation must match; incorrect orientation will mis-sequence cycles |
| Connector | Pin count and keyed housings must align with the appliance harness; adapters are uncommon and not recommended |
| Verification | Perform a powered functional test to confirm cycle advancement and correct activation of heater/motor outputs |
Q&A
What is the Frigidaire part 131758600 control timer and what does it do?
The 131758600 control timer is an electromechanical timer assembly used as the cycle controller in certain older Frigidaire appliances. It advances the cycle and switches power to different components (motors, heaters, valves, pumps, etc.) at the correct times via internal cams and switch contacts. in short, it sequences the appliance’s operations during a selected program.
What symptoms indicate the timer is failing or bad?
Common symptoms of a failing timer include: the appliance does not advance through cycles or is stuck in one cycle, intermittent or no operation of motor/heater/pump at expected times, the timer knob will not turn or feels loose, or the timer advances erratically. Burnt contacts inside the timer can cause loss of specific functions (e.g., no heat or no spin) even if other functions work.
How can a technician test the 131758600 timer to verify it is indeed defective?
Always disconnect power before servicing. Visually inspect for burned contacts or broken cams. using the service wiring diagram and a multimeter, check continuity between the timer’s switch terminals for the positions thay should be connecting; a lack of continuity where the diagram shows a closed contact indicates failure.Also test the timer motor coil for continuity-an open coil means the motor is bad. If needed and safe procedures are followed, some techs advance the timer shaft while measuring switching behavior to confirm contacts change state as the timer rotates.
Can I replace the timer myself and what should I watch for during installation?
Experienced DIYers can replace the timer, but always unplug the appliance first. Before removal, photograph or label all wire connections so they can be reattached to the correct terminals. Install the new timer in the same orientation, reattach connectors firmly, and ensure the control knob indices align with the timer’s shaft position. Do not force the knob-if alignment is off, set the timer to the “OFF” or a neutral position before seating. If unsure, consult the appliance’s service manual or a technician.
are there common compatibility or cross-reference considerations for part 131758600?
Compatibility depends on the appliance model. The safest approach is to check the appliance model number and confirm the OEM parts list or use Frigidaire’s parts lookup. Aftermarket or alternate part numbers may exist; verify terminal layouts and mounting before buying. If you have doubts, provide the appliance model number to a parts supplier or technician to confirm fitment.
Is the timer repairable or should it be replaced?
Minor issues like loose knobs or a bad motor sometimes can be addressed, but internal switch contacts and cams are normally not serviceable in the field.If contacts are burned or cams are worn, replacement of the whole timer assembly is generally the correct solution. Because of labor and reliability concerns, replacement is more common than repair.
Are there safety precautions I should follow when testing or replacing the timer?
Yes – always disconnect mains power before opening the appliance. Label wires before removal to avoid miswiring. Avoid working on live circuits; if live testing is necessary, use appropriate insulated tools and safety practices and only if you are qualified. After replacement, test the appliance through a short cycle to confirm proper operation and check for unusual noises or smells.
Where can I buy a replacement 131758600 timer and what is a typical cost range?
Replacement timers can be purchased from authorized Frigidaire parts dealers, appliance parts websites, and some third‑party sellers. Price varies by supplier and whether the part is OEM or aftermarket; expect a general range depending on availability (commonly tens to a few hundred dollars). Always verify the part number against your appliance model before purchasing, and consider supplier return policies in case of incompatibility.
Future Outlook
The 131758600 Frigidaire control timer serves as a central timing and sequencing component in compatible Frigidaire appliances, coordinating cycles and electrical functions to ensure consistent operation. By regulating the timing of motors, valves, and other control circuits, this timer plays a key role in overall appliance performance, efficiency, and user experience.
Accurate diagnosis is essential when timer-related problems are suspected, since similar symptoms can stem from wiring, sensors, or other control modules. Verifying the root cause through systematic testing-rather than assuming timer failure-helps avoid unnecessary parts replacement and reduces downtime and expense.
When diagnosis confirms that the 131758600 control timer is defective, replacing it with the correct, compatible unit and ensuring proper installation will typically restore reliable operation.For complex repairs or where safety or warranty considerations apply, consulting a qualified technician is advisable to achieve a durable, compliant outcome.
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
Reliable-Parts-Hub
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