807387501 Frigidaire Dishwasher Timer is the control/timer assembly used to sequence and time the major operations of compatible Frigidaire dishwasher models. The component functions as the appliance’s timing and switching element – in service it may appear as an electromechanical rotary timer or an electronic control module that drives relays, triacs, or switches to apply power to the dishwasher’s actuators and loads according to the selected program.
Within the appliance system the timer coordinates interaction between the user control interface, door latch and interlock, water inlet valve, wash motor and circulation pump, drain pump, heater or thermostat, and detergent/dispenser mechanisms.It receives inputs from safety interlocks and sensors (such as, door switches and float/overfill devices) and provides timed outputs that energize motors and valves; it thus serves both sequencing and safety-interlock roles and is typically mounted behind the control console or inner door panel and connected via a multi-pin wiring harness to the rest of the machine.
In this article readers will find a technical overview of the 807387501 Frigidaire Dishwasher Timer’s intended function, guidance on checking electrical compatibility and model fit, common failure symptoms (such as non-advancing cycles, intermittent motor or heater operation, or burned contacts), recommended diagnostic checks (visual inspection, continuity and voltage checks at relevant pins, and verification of input signals and interlocks), and practical replacement considerations including connector pinout, mounting, and safety precautions. The aim is to give technicians, engineers, and informed appliance owners the context needed to diagnose timer-related faults and to select and install a suitable replacement without relying on promotional claims.
Table of Contents
- Function and Role of the 807387501 Frigidaire dishwasher Timer
- How the 807387501 Frigidaire Dishwasher Timer Works: Internal Mechanisms, Control Logic, and signal Flow
- Common Failure Symptoms and Diagnostic Indicators of Timer-Related Malfunctions
- Compatibility, Replacement Considerations, and installation Notes for the 807387501 Frigidaire Dishwasher Timer
- Q&A
- Insights and Conclusions
Function and Role of the 807387501 Frigidaire Dishwasher Timer
The 807387501 Frigidaire Dishwasher Timer functions as the central sequencer that times and routes mains or control voltages to the dishwasher’s subsystems so that wash, rinse, drain, and drying operations occur in the correct order. In practice, the timer coordinates outputs to the wash pump, drain pump, water inlet valve, detergent dispenser, heater or thermistor circuits, and the door latch or interlock; in some Frigidaire models this sequencing is accomplished by a synchronous motor driving cam-operated switch contacts, while in others a PCB provides time-based switching and solid-state outputs. The timer also reads or enforces basic interlocks (door, float, temperature feedback) and will hold or interrupt sequences when those interlocks indicate a fault condition.
- Primary functions: sequence control, power routing to loads, and enforcement of safety interlocks.
- Typical failure behaviors: no advancement through cycles, loss of power to one or more components, intermittent operation, or audible humming from a seized motor or burned contacts.
- Diagnostic cues: verify timer motor rotation or presence of timed output voltages, check switch contact continuity across positions, and compare terminal assignments to the appliance wiring diagram.
Compatibility requires matching the 807387501 part number, connector harness, and terminal layout to the specific Frigidaire model because physical mounting and wire-to-terminal assignments vary between model generations; replacing the timer with a non-matching unit can leave circuits unpowered or incorrectly sequenced. For field troubleshooting, technicians typically confirm line voltage at the timer input, observe whether the timer advances under load, and measure voltages at outputs during different cycle stages; if contacts are used, visual inspection for pitting or burning is useful. follow safe isolation procedures before handling the timer and consult the appliance’s schematic to ensure the replacement part duplicates the original switch functions and timing characteristics.
| Item | Description |
|---|---|
| function | Sequentially energizes pumps, valves, heater and dispenser to implement wash cycles. |
| Implementation | Electromechanical cam/switch assembly or PCB-based timed outputs depending on model. |
| Common symptoms | Fails to advance, partial cycle operation, no power to specific components. |
| Diagnostic tip | Observe timer motor rotation or measure timed output voltages; verify terminal mapping to schematic. |
How the 807387501 Frigidaire Dishwasher Timer Works: internal Mechanisms, Control Logic, and Signal Flow
The 807387501 Frigidaire Dishwasher timer is a mechanical-electrical sequencer that organizes wash, drain, rinse, and dry stages by routing mains and control voltages to the dishwasher’s actuators. Inside the assembly a small synchronous motor or stepper advances a drum or cam network that closes and opens multiple switch banks; those switch closures supply 120 VAC (or the appliance-specific line voltage) to the drain pump, circulation motor, heater, and water inlet solenoid in the correct order. In practical terms, the timer does not make control decisions based on software logic but implements fixed timing and interlock logic through contact geometry and wiring, so replacement compatibility depends on matching the connector pinout, mounting orientation, and the presence or absence of integrated solid-state components.Common field symptoms of a failing timer include stuck cycles, no motor or heater power at stages where it should be present, intermittent contact, or burnt terminals caused by arcing at the switch contacts.
- Outputs commonly switched: drain pump, circulation motor, heater, water inlet valve, detergent dispenser, and door latch/lock.
On the signal-flow level, incoming line power is routed through safety interlocks (door switch, float switch, thermal cutouts) and then into the timer’s contact banks; as the cam rotates it closes the appropriate contacts to energize the target load, and return paths go back to the neutral/ground system. Some later variants of this part add printed circuit elements or solid-state switching for the heater (triac control) or include low-voltage logic for user interface lamps, but the basic flow remains a timed sequence of contacts feeding loads. For troubleshooting, technicians trace voltage to and from the timer at specified cam positions, verify continuity across the switch banks when advanced manually, and compare terminal labeling to the wiring diagram; this approach distinguishes a bad timer from failures in pumps, valves, or door interlocks.
| Item | Description |
|---|---|
| Drive method | synchronous motor or stepper advancing cams/switches (some units add PCB control) |
| Typical outputs | 120 VAC switched to pump, motor, heater, valve; low-voltage for lamps/controls on some variants |
| Service note | Match connector pinout and mounting; inspect contacts for arcing and worn cam lobes |
Common Failure Symptoms and Diagnostic Indicators of Timer-Related Malfunctions
The 807387501 Frigidaire Dishwasher Timer is an electromechanical sequencer that directs power to the wash motor, drain pump, inlet valve, and heating circuit according to cam-driven contacts and a small synchronous motor. In operation the timer provides timed switching rather than supplying regulated voltages, so failures typically manifest as lost indexing, intermittent contact closure, or a stationary cam that prevents cycle advancement. Mechanical wear of the cam lobes, burnt or pitted contact surfaces, a seized drive motor, or broken gearing are common root causes; compatibility should be verified against the appliance model and harness because terminal layouts and motor voltages can vary between Frigidaire variants, which affects diagnostic expectations and replacement choices.
- No cycle advancement or unit remains in one phase (fill, wash, or drain) despite power present at the appliance.
- Random skipping of cycle steps or premature transition between phases.
- Some components (pump, valve, heater) never receive power while others operate normally.
- Visible burning, arcing marks, corrosion, or melted plastic around the timer housing or terminals.
- Timer motor runs audibly but contacts fail to switch or motor does not run at all.
Diagnosis starts with visual and electrical checks: inspect contacts and cam faces for pitting, measure supply voltage to the timer motor during a cycle advance, and confirm continuity across switched terminals as the cam rotates. Use a multimeter or test lamp to verify that the timer outputs the expected AC supply to controlled devices at the correct points in the sequence; for example, the drain pump should see voltage only during the drain segment while inlet valve voltage appears during fill. If the timer motor receives its rated input but contacts do not change state,the problem is internal (cams,gears,or contact assembly); if the motor receives no input,trace upstream fuses,door switches,and selector switch continuity before condemning the timer.
| Item | Description |
|---|---|
| Timer motor supply | Measure AC voltage at motor terminals during attempted advance; expected supply per model (commonly 120V) must be present to drive indexing. |
| Contact switching | Verify continuity across contact pairs as cam rotates; contacts should open/close in specific sequence matching wiring diagram. |
| Visual condition | Look for pitted/burned contacts, loose connectors, gear teeth damage or plastic deformation indicating mechanical failure. |
Compatibility, Replacement Considerations, and Installation Notes for the 807387501 Frigidaire Dishwasher Timer
The 807387501 Frigidaire Dishwasher Timer functions as the central sequencing device that routes line voltage to the drain pump, circulation motor, water inlet valve, heater, and door latch at the correct points in the wash cycle. Depending on the specific design it may use mechanical cams and contacts or an integrated electronic control to open and close outputs; the visible shaft and terminal block are notable physical references when confirming fitment. Compatibility depends on terminal layout,connector type,shaft orientation,mounting hole spacing,and voltage ratings – two timers that look similar can have different contact assignments or time-base characteristics,so always compare the service part number,wiring harness plug shape,and the schematic printed on the timer housing or in the service manual before replacing the unit.
Replacement and installation require basic electrical verification and careful mechanical alignment. Disconnect power and document or photograph every wire location before removal; use a multimeter to confirm continuity of key timer contacts and to verify that incoming mains reach the timer when the dishwasher is in a state that should energize it. During installation align the timer shaft to the indexed start position, ensure the connector seats fully and that pins are not corroded, fasten the timer to the chassis to avoid vibration-induced contact failure, and run a diagnostic or a short cycle to confirm proper sequencing before reassembling trim panels. For field troubleshooting and prep, consider these practical checks:
- Confirm service part number and compare terminal labels to the wiring diagram.
- Inspect the connector for bent pins, corrosion, or mismatched keying.
- Verify shaft position and ensure any cam or detent aligns with the door latch mechanism.
- Measure expected voltages at the timer outputs during a test cycle to isolate faults.
| Item | Description |
|---|---|
| Voltage rating | Nominal line voltage (typically 120 VAC) - confirm on unit label and schematic. |
| Connector type | Numbered spade or multi-pin plug; must match dishwasher wiring harness. |
| Common symptom | Intermittent or no cycle advance, inability to energize pump or heater, or stuck position. |
Q&A
What is the Frigidaire part 807387501 and what does the dishwasher timer do?
Part 807387501 is a dishwasher timer/control assembly used in some Frigidaire (and related brand) dishwashers. The timer controls the sequencing of wash cycles, switching power to the drain pump, wash pump, heater, and valves at the correct times. In electromechanical timers it advances cams/contacts to change states; in electronic modules it runs the control logic and relays/triacs that energize components.
How do I know if the 807387501 timer is failing?
common symptoms of a failing timer include: dishwasher getting stuck in one cycle (won’t advance), not starting, intermittent operation, pumps or heater not receiving power when they should, or the timer knob not rotating. Visual signs include burned or melted plastic, burnt electrical smells, or corroded/broken connector pins. Before replacing, verify power to the unit, fuses/thermal cutouts, door switch, and wiring-these faults can mimic a bad timer.
Can I test the 807387501 timer myself, and how?
Yes, basic testing is absolutely possible with a multimeter. First disconnect power to the dishwasher. Remove the control panel to access the timer and disconnect its wiring harness. Check for continuity across the timer motor (if it has one) and continuity or expected switching between timer output contacts as you manually advance the timer knob (or apply rated voltage to the timer motor where safe). For electronic timers you can check that the control board receives correct supply voltage and that switching outputs change state when the board is commanded.If you’re not pleasant testing live circuits, have a qualified technician perform the diagnosis.
How do I replace the 807387501 timer-is it difficult?
Replacement is generally straightforward for someone comfortable with appliance repair. Steps: 1) Disconnect household power to the dishwasher. 2) Open the door and remove the screws securing the inner access/control panel (may require removing the outer panel on some models). 3) Locate and remove the mounting screws for the timer and unplug its wiring harness. 4) Transfer any mounting brackets or actuator knobs and install the new timer,reconnect the harness,reassemble the panel,and restore power. Use care with connector orientation and inspect wire insulation. If the timer is behind glass or sealed controls, follow the model-specific service manual.
Do I need any special tools or calibration after installing the timer?
No special calibration is typically required-once installed the timer should index through cycles normally. Basic tools required are screwdrivers, pliers, and a multimeter for verification. If the timer has a manual knob or cam indexing, ensure the knob is in the correct “off” or “starting” position before power-up. For electronic modules, some models may require a power-up sequence (consult the service manual) but most are plug-and-play.
Where can I buy a genuine 807387501 replacement,and can I use a generic part?
you can buy the genuine part from Frigidaire/Electrolux parts dealers,authorized service centers,or reputable appliance parts retailers. Generic or aftermarket timers may be available and can work if they are exact electrical and mechanical matches; however,OEM parts are recommended to ensure proper fit,wiring compatibility,and reliability. always confirm compatibility by appliance model and serial number before purchasing.
Are there any safety precautions I should take when handling or replacing the timer?
Yes. Always disconnect power at the circuit breaker or unplug the dishwasher before accessing the timer to avoid electrical shock. discharge any stored capacitors on electronic control boards according to the service manual. Avoid touching live contacts when testing with power applied-use insulated tools and follow multimeter safety procedures. If the dishwasher has a thermal fuse or high-voltage components (e.g., heating element), take extra care or hire a professional.
Will replacing the timer fix all control-related dishwasher problems?
Not always. Replacing a timer will fix problems caused by a defective timer, but similar symptoms can be caused by bad door switches, failed pumps, blown thermal fuses, wiring failures, faulty sensors, or a damaged control board. Perform or request a full diagnostic to isolate the fault before replacing parts. If in doubt, consult a qualified appliance technician to avoid unneeded parts replacement.
Insights and Conclusions
The 807387501 Frigidaire dishwasher timer serves as a central control component that sequences wash cycles, manages motor and valve operation, and helps coordinate heating and draining functions. When operating correctly, it contributes to consistent cleaning performance, efficient water and energy use, and safe, predictable dishwasher behavior; when it fails, a range of symptoms can occur, from cycles that will not advance to intermittent or complete loss of function.
Because symptoms of timer failure can overlap with other electrical or mechanical faults, proper diagnosis is essential before replacement. A thorough diagnostic process-checking electrical connections, associated relays, motors, and switches-helps confirm that the timer is the root cause. When diagnosis confirms a defective 807387501 timer, replacing it with the correct, compatible part and following recommended safety and installation practices restores reliable operation and reduces the risk of repeat failures.
the 807387501 Frigidaire dishwasher timer is a key element in overall appliance performance; careful diagnosis and timely, correct replacement when required preserve functionality, safety, and service life, and help ensure the dishwasher continues to meet user expectations.
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