807387501 Frigidaire Dishwasher Timerâ is a dishwasher control/timer assembly used toâ sequence and switch the⣠major⣠functions of â¤a Frigidaire âdishwasher.â it is a timing and control component-implemented âin various âmodels as an âelectromechanicalâ rotary timer⣠or âan âŁelectronic control module-that provides âtimed switching of power and logic signals to â¤the appliance’s actuators and safety interlocks.
Within the â˘appliance â¤the timer servesâ as the primary⣠sequencer for wash cycles, routing â˘mains or low-voltage power âto â˘the circulation pump,â drain pump, water inlet valve, heating element, detergent dispenserand door latch at âthe appropriate âŁtimes. It⤠also interfaces with â˘sensors and switches such as the door â¤switch, float or water level sensorand temperature â˘sensing elements,⤠and may includeâ relays, âcontacts or solid-state outputs to protect âŁagainst simultaneous or unsafe operations.â Proper⣠operation of the timer is thus âcentral to cycle progression,safety interlocks and⣠coordinated control of hydraulic,thermal and electrical subsystems.
This article explains the 807387501 âtimer’s âŁintended function and â˘typical installation locations, how to check compatibility and â¤cross-reference part⤠numbers, common failure symptoms (for example âŁno cycle âŁadvancement, stuck⢠in a single state, intermittent outputsor burned contacts), practical diagnostic checks and troubleshooting âŁproceduresand considerations for âsafe replacement and reinstallation â¤(includingâ harness/connector matching, mounting orientation â˘and mains isolation).The goal is â˘toâ give technicians, engineers and appliance owners the technical context needed toâ diagnose timer-related faults and make informed repair or replacementâ decisions.
table â˘of⢠Contents
- Function and⤠Role of the Dishwasher Timer in Cycle Sequencing and âsafety Interlocks
- How the 807387501 Frigidaire Dishwasher Timerâ Operates: Internal Components, Motor, âandâ Signal⤠Flow
- Common Failure Symptoms âand Diagnostic Indicators for Timer-Related Faults
- Compatibility, Replacement and Troubleshooting â˘Proceduresâ for the⣠807387501 âTimer, with Installation Notes
- Q&A
- Concluding Remarks
Functionâ and Role of the Dishwasher Timer in Cycle Sequencing and Safety Interlocks
The 807387501 Frigidaire âŁDishwasher Timer is an⣠electromechanical â¤cam-and-switchâ assembly that controls the sequence of operationsâ in the machine by supplying switched mains or relay drive⣠powerâ to the circulation motor, water inlet valve, drain⢠pump, heater circuit âand otherâ loads. Driven by a small synchronous motor or stepping mechanism, the timer advances âdiscrete cam positions âthat close and open internal contacts according⢠toâ the selected â¤cycle. Each cam position corresponds âtoâ a cycle phase (fill, wash, drain, rinse,⣠dry) and the âtimer âwill holdâ or advance based on feedback from external sensors and switches; for âŁexample, the timer will keep âthe fill contactsâ closed until the water-level/float switch â¤confirms â˘adequate⢠water and will only enable the âheater circuit once the âŁthermostat and â¤high-limit thermal cutout permit it.
The timer also implements â¤and enforcesâ safety interlocks, so failures⤠in door latch switches, float/water-level sensors,â or thermal cutouts can prevent the timer from advancing or from energizing hazardous circuits. When replacing⣠or diagnosing a unit,confirm mechanicalâ cam profile,terminal layout â˘and motor voltage⤠to ensure compatibility with⤠the machine’s wiring⤠harness and â˘interlock âŁlogic. Technicians commonly âverifyâ continuity at the timer’s contacts, apply measured⣠line voltageâ to â¤the drive motor to check advancementand simulate⢠interlock closures to observe sequenced outputs; symptoms such as no cycle advance, missing heater or pump operation,â or random â¤switching typically point to worn cams orâ failed contacts within the timer ratherâ than downstream components.
- primary⤠roles: sequence control,timed switching of major loads,and⤠enforcement of safetyâ interlocks.
- Common failure modes: stuckâ in one position, intermittent contact closureor drive motor failure causing no âŁadvance.
- Replacement checks: match terminal numbering, cam functionsandâ motor voltage to ensure correct operation.
| Item | Description |
|---|---|
| Drive type | Typically âsmall âsynchronous âmotor driving cam switches (electromechanical timing). |
| Interlock âpoints | Door latch,â float/water-level switch, â˘thermal cutouts influenceâ timer advancement and outputs. |
| Troubleshooting | Verify timer motor runs, inspect cam contacts for pitting,â simulate interlocks to âconfirm sequencedâ outputs. |
Howâ the â¤807387501 Frigidaire Dishwasher Timer â¤Operates: Internal Components,motor,and Signalâ Flow
The 807387501 Frigidaire Dishwasher Timer âis an electromechanical â˘sequencing device â¤that controls the order â˘and duration of dishwasher functions byâ routing mains âpower through a â˘set of cam-operated contacts.⤠Internally itâ typically âcontains a⣠small synchronous timer âmotor â˘driving a gear train and⤠a wafer-style cam switch assembly; as the âmotor turnsâ the cams open âŁand close multiple contact sets âto energize the water inletâ valve, circulation pump, drain pump, â¤heaterand detergent dispenser in the correct sequence. Proper compatibility requires matching the timer’s terminal layout and cam âprofile to âŁthe dishwasher model so that each contact closes at the intended â¤point âin theâ cycle; replacement timers mustâ share the same electrical ratings and âconnector positions to avoid misrouting power or⤠leaving safety âinterlocks disabled.
Signal âflow begins when â˘the user selects a cycle âand the start circuit supplies mains voltage to âthe timer motor and one or more â¤contact sets. As â˘the â¤motor advances, the âcam lobes change contact states, connecting âŁmains to downstream components in discrete âstepsâ rather than sending data pulses; âthis⣠means faults commonly present â¤as missing⢠power⢠at one or more loads (such âŁas, pump spinsâ but drain does⤠notor the heater⤠never receives voltage)â rather than erratic electronic errors. Technicians typically âverify operation â¤by checking for line voltage at the timer motor lead⢠and continuity across specific cam-operated⢠contacts while advancing the mechanism; observed failure modes include a seized timer motor, worn cam contactsor âbroken gears that prevent⢠contact changeover, all of which affect sequence timing and component interlock behavior.
- Timer motor – drives â¤sequence at fixed speed
- Cam â¤switch bank – routes â¤mains power to loads in â˘stages
- Gear âŁtrain and drive – translates motor rotation toâ cam positions
- Terminal block â˘- mechanical/electrical interface to harness
- Commonâ symptoms – no cycle advance,â selective loads âŁwithout power, âŁintermittent contact operation
| Item | Description |
|---|---|
| Timer motor | Small synchronous motor providing constant-rate advance of âŁtheâ cam âassembly |
| Cam â¤switch⤠bank | Multiple sets of mains contacts that open/close to power valves, pumpsand heaters |
| terminal block | Connector layout â¤that mustâ match the applianceâ harness forâ proper compatibility |
Common âfailure Symptoms and Diagnostic Indicators for Timer-Related Faults
The 807387501⤠Frigidaire Dishwasher Timer is the electromechanical sequencing device that directs mains voltage to theâ wash pump, heater, âdrain âmotor and door latch at the correct points in a cycle. âŁIn many Frigidaire âmodels â˘this timer uses a driven⣠cam or rotor with multiple switch contacts; wear, pitting orâ loss of â¤detents changes contact timing or opens circuits entirely.Correct replacement requires matching the â˘terminal layout, gear orientation and indexing so⣠that the camâ actuates each âswitch at the designed âŁposition – otherwise a visually similar timer âŁcan run butâ mis-sequence â¤valves âor motors.
Technically usefulâ failure indicators are electrical and mechanical: loss of output voltage on⣠switch terminals during a phase, high-resistance â¤or intermittent continuity across contact segments, visible âarcing or⣠heat discoloration on terminal stripsand absence â¤of rotorâ advancement under â¤motor drive. Practical diagnostic steps include verifying supply⤠voltage to the timer, measuring expected AC or DC at each output while advancing the timer manuallyand inspecting gearing/detent âŁwear that allows the⤠rotor⣠to slip.â Example symptoms âand the likely diagnosticâ checks are listed⤠below.
- Dishwasher won’t start or no pump/heater âpower – âcheck⢠for absent voltage at⤠timer output⣠terminals and open contacts via⤠continuity test.
- Cycleâ stays⣠stuck âon one function or won’t⢠advance â- âinspect rotor detent, gear teeth and âmeasure whether the timer motor⤠receivesâ drive voltage but âthe cam does not rotate.
- Intermittent operation or random resets – look for pitted orâ loose switch contacts and measure contact resistance under load.
- Burning smellâ or visible scorching – replace timer â˘and verify insulation and terminal integrity;⢠check for shorted circuits that âcan overload contacts.
| Item | Description |
|---|---|
| Symptom: No pump/heater power | Indicator: No output voltage from timer; continuity open on corresponding switch segment. |
| Symptom: Won’t advance cycle | Indicator: Timer motor energized but cam/gear slip or broken detent; mechanical wear visible. |
| Symptom:â Erratic/intermittent | Indicator: High contact resistance or intermittent contact⢠due to âpitting; arcing marks âpresent. |
Compatibility, Replacement and Troubleshooting Procedures for the â˘807387501 Timer, with âInstallation Notes
The 807387501 Frigidaire Dishwasher Timer is an electromechanical sequencing device that routes mains power to the motor, heater, pump and valves via cam-operated contacts and a small synchronous motor. In service it advances positions to start and stop wash, rinse and âdrain⣠operations; commonâ failure modes include worn contact âsurfaces, a stalled drive motoror broken internal gears that prevent theâ timer âfrom stepping. Before replacing the timer, verify mechanical and electrical â¤compatibility âbyâ matching the âconnector pinout,â shaft âlength and â¤mounting patternâ to the appliance model – some aftermarket unitsâ share the âpart ânumber but differâ in âterminal arrangement or cam indexing,⤠which will produce incorrect sequencing if installed without modification.
Troubleshooting should separate timer faults from load faults (motor, heater, pump, âdoor⢠switch)⣠and focusâ on measurable electrical âbehavior: check âfor expected supply voltage at the timer inputâ with the machine running a cycle, measure continuity through contact positions using âan ohmmeterand observe whether⤠the timer motor receives line⢠voltage when advance should occur. For installation, replace the timer with âthe âpower disconnected,â transfer any wiring harness⤠or mark wires to preserve terminal assignments, secure the unit⢠so the shaft and cam index correctlyâ with the â˘dispenser/selector⣠mechanism,â andâ test all â¤cycle â˘functions through a manual advance or diagnosticâ mode afterâ reassembly.
- Verify symptom: no advance,⤠intermittent contacts,â or stuck cycle versus failed motor or external fuse.
- Electrical checks: confirm incoming line voltage, then use an⤠ohmmeter across switching terminals to test⢠for continuity in successive positions.
- Mechanical checks: inspect for stripped gears, seized bearingsor âeccentric âcams that⤠block⣠contact engagement.
- Replacement checks: confirm terminal layout, shaft âlengthand mounting holes match⢠beforeâ installation; label wires âif harness is removed.
| Item | Description |
|---|---|
| Typical⤠failure indicators | Stalled⢠advance, âburned/arched contacts, intermittent âheating or drain operation |
| Field test | Measure supply at timer input, confirm motorâ receives lineâ to â˘advance, check continuity across switched terminals |
Q&A
What is the function of the 807387501 Frigidaire⢠dishwasher timer?
The â807387501 is an electromechanical âtimer assembly that âsequences â¤the dishwasher’s cycles by switching power to⤠the motor, water inlet valve, drain⢠pumpand heater âŁat the correct times. It advances either by⣠an internal synchronous⢠motor or⢠by the control⤠logic and ensures the machine follows wash, â˘rinse and⣠drain steps in the correct order.
what are common symptoms that the 807387501 timer is failing?
Commonâ signs⢠include cycles that won’t advance or stop mid-cycle,no power being sent âto the â¤motor,pump,heater or valve during expected partsâ of a cycle,stuck or intermittent operation,burned or melted plastic smell â˘near âthe timer,or visible damage to the timer housing or contacts.
how can I test the 807387501 timer safely?
First disconnect power at the breaker. Visually inspect for burns, melted âŁplastic or âloose connections. With power still disconnected, âŁcheck for continuity across the timer âswitch contacts with a multimeter while manually advancing âŁtheâ timer shaft. To⤠check live âswitching, restore âpower only⤠if you are trained â˘and pleasant: measure voltageâ (usually â120 V AC âin the U.S.)â at the relevant timer output terminals while advancing the âtimer to the cycle position â¤where that component should be energized. Always follow electrical safety practices and consider a trained technician⢠for live tests.
Is the 807387501 timer a direct replacement for my Frigidaire dishwasher model?
Not necessarily. Part 807387501 fitsâ specific Frigidaire âmodels. Always âŁconfirm compatibility byâ checking the dishwasher’s model number and⣠cross-referencing with the manufacturer’s parts list or a reputable parts supplier. â¤Do not rely⣠solely on physicalâ appearance-electrical connections and cam profiles âmust matchâ the original.
Can âŁI repair the 807387501 timer or should â¤I replace âit?
Minor issues like corroded terminals or loose spadeâ connectors can sometimes be repaired.However, internalâ motor failure, burnt contactsor damaged cams usually require replacement. As the timer is a safety-critical part that controls high-current loads, replacement with a correct OEM or equivalent âquality⤠assembly is generally â¤recommended.
What precautions should I take when replacing the 807387501 timer?
Disconnect power âat the breaker before starting. âŁTake a clear photo âŁof the wiring before removing the old timer, label âwiresand transfer any mounting brackets or gaskets. âŁAvoid pulling on wires-use proper tools for spade âŁterminals.Ensure âthe replacement timer’s shaft position and mounting orientationâ match the original so the cycle sequence is correct. After installation, test all cycles âfor correct operation before regular use.
Why does the timer advance â˘slowly orâ stop advancing under load?
Slow or stalled advancement can be caused by a failing timer motor (weak gears â¤or worn motor), excessive frictionâ from â˘misaligned cams âŁor mounting, â˘or an electrical â¤issueâ such as low âincoming voltage or a shorted load â˘drawing too much current. Inspect for âŁmechanical binding, wornâ gearsand check incoming voltage and⢠load currents.â Replace the timer if the motor or internal gears are worn.
Where can I buyâ a replacement 807387501 timer and how much⣠should âŁI â¤expect to pay?
Replacements are available⣠from Frigidaire-authorized â˘parts distributors, appliance parts retailersand âsome online marketplaces.Prices âvary depending on⣠OEM vsâ aftermarket and source; expect a wide range, so compare sellers andâ verify returns and âwarranty⣠policies. Always confirm part compatibility with your dishwasher model number â¤before âŁpurchasing.
Concludingâ Remarks
The 807387501 frigidaire dishwasher timer is a central control component that coordinates âwash⤠cycles,⤠timingand safetyâ interlocks to ensure âconsistent cleaning performance âŁand reliable operation. As the⤠timing hubâ for cycle selection, motor and valve sequencingandâ termination of cycles, a âŁproperly functioning â˘timer contributes directly to âthe⢠appliance’s efficiency, dependabilityand⣠user satisfaction.
because symptoms such as erratic â¤cycling, failure to advance programsor⣠unresponsive controls can⣠stem from a variety of causes, careful âdiagnosis is essential to determineâ whether the timer is theâ root â˘issue. Accurate identification-using the correct part numberâ and compatibility checks-helps avoid unnecessaryâ repairs âŁandâ ensuresâ theâ replacement will ârestore full functionality.
When replacement is warranted,selecting the correct 807387501 timer and following ârecommended installation and testing⤠practices will maximize theâ likelihood of a triumphant repair. â¤For complex diagnostic situations or installations that involve âŁelectrical components, âconsulting qualified service personnelâ helps protect the appliance and maintain safety and â¤warranty considerations. Properâ diagnosis andâ replacement preserve performance and extend the useful life of the âŁdishwasher.
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