A122BA Whirlpool ā£Radiant ā¢Module Cartridge Black is a radiant module cartridge used in many Whirlpool electric smooth-top ranges ā£and cooktops. It is indeed a compact electrical control assembly-frequently enough packaged as a cartridge orā¢ module-that provides teh interface between the userā controlsā and a āceramic-glass surface heating element, carrying switching elements, contacts or electronic ācircuitry required too regulateā element power and āprotectā¢ theā circuit from overload or overheating.
Inside the appliance, the radiant module cartridgeā controls and āmodulates electrical āpower to a specific surface heating zone and interfaces with the user control (knob or electronic control board), ā¤the heating elementand ā¢associated safetyā devices such asā¤ thermal cutouts and wiring harnesses. Depending on the designā¤ it may perform on/off switching, multi-tap power selection or āpulse modulationand it ā¤must tolerate high temperatures and carry mains current. Properā operation thus depends on āsecure electrical connections,intact insulation,and correct mechanical mounting under the glass-ceramic cooktop or ābehind the control panel.
In this article you will findā a technical overview of the module’s function and typical compatibility considerations, common failure symptoms āand diagnostic steps, practical troubleshooting tests (visual inspection, continuity ā¤and voltage checks, connector and harness verification)and guidance on safe replacement and installation practices. The aimā¤ is to equip technicians, engineersand appliance āowners with the necessary context to identify a faulty module,ā£ confirmā fitmentā£ and wiring,ā and carry out replacements or further diagnostics whileā observing appropriate electrical safety procedures.
Table of Contents
- Function and Role of the Radiant Module Cartridge in āWhirlpool Electric Range Control Systems
- Howā£ the ā¤A122BA Whirlpoolā Radiant Module Cartridge Black Interfaces withā Control Boardsā¤ and Heating Elements
- common Failure Symptoms, Measurable Electrical Faultsand operational Indicators
- Compatibility Matrix,ā Replacement Considerations, Installation Stepsand Troubleshooting Procedures for Field Technicians
- Q&A
- The Way Forward
Function and Role of the Radiant module Cartridgeā¤ inā£ Whirlpool Electric Range Control Systems
The A122BA Whirlpool Radiant Module Cartridge āBlack isā¤ a field-replaceable control cartridge used to switch and modulate ā£line voltage to a single radiant cooktop element. The moduleā accepts a control inputā from the infinite switch or the range’s āmain control ā£boardā¢ andā uses solid-state ā¤switching (typically ātriacs or a relay with snubber circuitry) to applyā£ dutyācycled power toā¢ the āelement. It also incorporates overcurrent protection and ātransient suppression so theā element’s heat output is delivered āin consistent cycles; when the module fails it commonly presents as an open circuit, āshorted outputor intermittent switching rather then a component that gradually loses efficiency.
- Primary functions: switch line power to the radiant element,modulate dutyā£ cycle,and provide electrical protection and ātransientā¤ suppression.
- Typical failureā symptoms:ā one element does not heat, element āstays on continuously, erratic cyclingor visible burn/discoloration at the cartridge terminals.
- Compatibility notes: cartridge style means fit andā¤ pinoutā¤ must match the range model and wiring āharness; always verify the stamped part number and connector arrangement before replacement.
Inā¢ practical servicing, technicians confirm element continuity and harness integrity before replacing theā¤ cartridge, because āa failing element or a shorted wire can quickly damage āa new module. When replacing the cartridge, match the A122BA part number and verify the connector type and mounting orientation so ratings and protective features remain correct forā the appliance; using ā£the correct replacement preserves the original switching ācharacteristics andā¤ overcurrent protection. Forā¤ troubleshooting, measure for ā¤continuity with power removed, inspect āfor heat or arcā damage āon terminalsand replace the module ifā¤ diagnostics show correct input control signals but no proper switched outputā£ to the āelement.
| Item | Description |
|---|---|
| Function | Switched line-power output to a single radiant surface ā£element; ā¢contains switching device and suppression ā£components |
| Common failure modes | Open/shorted output, intermittent switching, welded contacts āor scorched terminals due to element faults |
how the A122BA Whirlpoolā¢ Radiant Module Cartridge Black Interfaces with controlā Boards and Heating Elements
The A122BA Whirlpool Radiant Moduleā Cartridge Black is a compact switch-and-sensor assembly that interfaces the appliance’s control boardā with the radiant heating elements. It accepts low-voltage drive signals and safety interlocks ā¢from theā main ācontroller, translatesā¢ those ā¤commands through ā£on-board driver circuitry (typically triacs or MOSFETs ā¢with input optoisolation),ā and switches the AC feed to the element terminals.The ācartridge also provides temperature feedback or current-sense data through a dedicated thermistor or sensing resistor soā£ the ācontrol board can detectā£ open elements, shortsor overheating events. Correct mating of the connector and matching of pinout and signal logic areā required for āelectrical and functional compatibility with a given Whirlpool controller harness.
In normal operation theā¤ module acts as an intermediary:ā¢ the controller asserts a ādrive line, theā cartridge closes the AC path to the elementā¢ whileā supervising safety inputs (thermal ācutouts, door switches) and reporting fault conditions back to the control board. For service diagnostics, technicians should confirm presence of the expected drive voltageā atā¤ the module input, continuity andā correct resistance of the element and thermistorand absence of short circuits on the module’s switched outputs; typical failure modes include a stuck-open āswitch (no heat with valid drive), shorted ā¤output (blown fuse or trip)or ā¤intermittent switching under load.When replacing the cartridge use ā¢a unitā¤ that matches the original’s connector, switching currentā¢ ratingand temperature-sensor characteristics to ensure āreliable interaction ā¤with the ā¢control electronics.
- control input: low-voltage drive āfrom the main ā£board
- Heater output: switched ACā to radiant element
- Temperature sense: thermistor or sensor line to monitor element temperature
- Ground/supply: common return ā¤and any auxiliary ā¤supply pins
- Diagnostic feedback: open/short/faultā reporting to the controller
| Item | Description |
|---|---|
| Connector type | model-specific multi-pin plug; correct orientation required |
| Control signal | Low-voltage logic or PWM drive; opto-isolated inputs common |
| Switched output | AC triac/MOSFET rated ā£for rated line voltageā£ and element current |
| temperature sensor | NTC thermistor āor current-sense ā£resistor for feedback |
Common Failureā Symptoms, Measurable ā¤electrical Faultsand Operational Indicators
The A122BA Whirlpool Radiant Module Cartridge Black functions āas the switching and sensingā interface between the user control board and the radiant ā¤heating elements.In typical Whirlpool electric cooktops and ranges this cartridge ācontains āthe ā£power switching device ā(triacā¤ or relay), driver ācircuitryand connectorized terminalsā that match the oven harness; when you replace a failed control channel you ā¢fit aā functionally āidentical cartridge to restore ā¤correct ā¢pinout and switching behavior. Technically, the moduleā regulates element ā¤power by receiving low-voltageā drive signals from the cooktop controlā¢ and applying mains voltage to the element outputs; compatibility depends on matching the harness connector, ā¢mounting style, āand rated voltage/current ā¤of the original cartridge, so ā¤verify model ā¤fit āandā terminalā layout prior to installation.
Common field indicators ofā¢ cartridge malfunction are electrical and operational:ā no heat on one orā moreā¢ elements, intermittent or stuck-on heating,ā¤ visible fault/error codes on the āuser interfaceor element indicator lights that behave inconsistently. Use a digital multimeter āto isolate faults-check incoming line voltage at the cartridge supply pins, measure continuity/ohms across output terminals whenā¢ the element is disconnected,ā£ and test for leakageā£ or short-to-ground on the module chassis. For example, if the control panel requests heat butā£ there is mains voltage present at the cartridgeā¤ input and no switching at the output, the cartridge’s switchingā¤ element is highly likely failed. Replace the cartridge when measurements show āan open or shorted internal switchor when the module ā¤fails to respond to ā£driveā signals despite correct supply voltage and harness wiring.
- No heat on selected ā£element while other elements operate normally
- Intermittent heating or ā¢elements that remain energizedā after turn-off
- Indicator lights cycling or error codes corresponding āto the affected zone
- Measured āopen circuitā orā¤ low insulationā¢ resistance between output andā ground
| Item | Description |
|---|---|
| Supplyā voltage | confirm presence of expected mains on cartridge inputā pins (typically ā120/240 VAC depending ā¢on model). |
| Output ā£switching | Verify output terminals switch toā mains when ā£driven; lack ofā¤ switching with correct drive indicates ā¤failed triac/relay. |
| Continuity/Resistance | Measure element resistance separately; āanā open element vs. a closed cartridge ā£output helps isolate fault location. |
| Insulation/Leakage | Check for shorts to ground on cartridge housing or outputs that āindicateā£ internal component failure. |
Compatibility Matrix, Replacement Considerations, Installation Steps,ā and āTroubleshooting Procedures for Field Technicians
the A122BA Whirlpool Radiant Module Cartridge Black ā£is a field-replaceable control cartridge that manages the switching of radiant heating elements andā¢ reports ā¤diagnostic conditions ā£to the āappliance control board. Functionally, the cartridge accepts low-voltage control ācommands and ā¤provides theā line-voltage switching and sensor interfaces required byā¤ each heating zone; ātechnicians should verify ātheā¤ part number againstā the appliance service tag and confirm thatā connector pinout, mounting footprintand thermistor/resistor values match the original unit to prevent incorrect wiring or sensor mismatches. Replacement considerations include ā¢verifying harness compatibility, inspecting connector keying and pin integrity, ā¤andā confirming that any associated inline fuses or thermal cutouts are serviceable ābefore installation.
| Item | Description |
|---|---|
| Part number | A122BA – confirm against appliance service tag |
| Function | Line-voltage switching for radiant elements and sensor interface/diagnostics |
| Compatibility checks | match āconnector pin-out, mounting holes,ā¢ thermistor/resistanceā£ signatures |
| Common ā¢tests | Supply voltage, output switching under load, thermistor resistance at ambient |
For installation and troubleshooting, follow a structured diagnostic flow:ā¤ de-energize the appliance, document wiring with photos, remove the old cartridge and compare āmechanical and electrical ā¢interfaces,ā¢ then install and secure the replacementā using the original fasteners or equivalent. After reassembly, restore power and verify expected control voltagesā and element switching; if symptoms persist (no heat, intermittent heat, blown fusesor stored fault codes), proceed with targeted checks ā¢toā isolateā¢ the failure to the cartridge, harness, elementor upstreamā control.
- disconnect power at the breaker and verify zero-voltage ābefore ā¤touchingā¢ wiring.
- Documentā¤ original wiring and connector orientation with photos before removal.
- Verify supply voltage to theā¤ cartridge and measure output while callingā£ for heat; use a clamp meterā¤ for loadā¤ verification.
- measure āthermistor/resistor values at āambient āand compare to expected service values;ā¤ anā£ out-of-spec sensor can mimic module failure.
- Inspect connector pins and harness for corrosion, bent pinsor heat damage;ā£ repair or replace harness if pins are compromised.
- Check inline fuses and thermal cutoutsā¤ – replace blown protective devices only after identifying root cause.
- Whenā possible,substitute aā£ known-good cartridge to confirm module-level fault before replacing additional components.
Q&A
What āis the A122BAā£ Whirlpool Radiantā¢ Module Cartridge Black?
The A122BA ā¢Radiantā Module Cartridge (black) āis an OEMā£ control component used on some Whirlpool-brand āelectric ranges/cooktops. It is the replaceable āswitch/module that controls a radiant surface heating element (the smooth-top burners), regulating āpower toā£ the element and providing on/off and ā£infinite heat settings.
How do I know if this isā the correct part āfor my stove?
Verify compatibility byā matching the part number (A122BA) toā£ the part listed āfor your appliance model inā the manufacturer parts list or service manual. ā¢Also compare the physical appearance,mounting holes,and electrical connector arrangement ā£to ā¢the existing module. If in doubt, provide your stove’s model and serial number to a Whirlpool parts dealerā or online OEM parts lookup toā¤ confirm fit.
What āare ā¢the common symptoms of a failingā¢ radiant module cartridge?
Typical symptoms include āa burnerā that won’t heat ā£at ā¢all, a burner that is stuck on or only works āat one power level, erratic or intermittent heatingor the control knob not changing heat. These symptoms can also be caused by a bad element, wiringor control board, so ā£proper diagnosisā is needed.
Can I test the A122BA module to see if it’s defective?
Yes. With theā appliance power disconnected, you can ā£visually inspectā theā moduleā and connectors for damage. ā¤Basic electrical tests with a multimeterā (continuity/resistance checksā¤ across the āswitch terminals) can indicate an internal failure. For accurate terminal identification, resistance values āand testā£ procedures, follow the appliance’s ā¤service manual. If you are not experienced with electrical testing, consider a qualified technician becauseā testing can involve exposed live circuits if power is reapplied.
Is replacingā the radiant module cartridge a jobā I can do myself?
Many competentā DIYers can replace this module. The job generally requires disconnecting power to the appliance, removing the cooktopā or ā£control panel to access the module,ā unplugging the wire harnessā and replacing the cartridge, then reassembling. Take photos and label wires before unplugging to ensure correct reconnection. If you are uncomfortable working with āelectrical components or removing heavy panels, hire aā qualified appliance technician.
What tools and supplies will I need for replacement?
Common tools include āa Phillips and flat-headā screwdriver, nut drivers or socket set (usually 1/4-5/16 in.),needle-nose pliers,a multimeter for testing,and possibly aā¢ putty knife to lift a glass cooktop. Have replacement screws āand any needed gasket/insulation pieces on hand. Always disconnect mains power before starting work.
Are thereā any common āmistakesā¢ to avoid when installing āthe new module?
Do not work with the āappliance powered. Avoid forcing ā¢the cartridge āintoā£ position-ensure it seats flat and that the connector is fully engaged. Do not mix up wire positions; ā£reconnect wires exactly as they were ā£(use labels/photos). Avoid āovertighteningā screws which can crack plastic parts,and inspect the element and wiring harness for damageā before reassembly āto prevent re-failure.
After replacing the module, does the range require a reset or ācalibration?
Most radiant module replacements do notā require specialā¢ calibration. After reassembly, restore power and verify each burner’s operation through āthe full control range. Some modern ranges may perform a brief self-test after power is restored or may require resetting clock/timer settings; consult the appliance manual if youā see error codes or ā¢inconsistent ābehavior.
The Wayā Forward
The A122BA Whirlpool Radiant Module Cartridgeā Black serves ā¢as a key control component in compatible Whirlpool cooktops,managing theā£ operation and monitoring of the radiant heating āelements to ensure consistent ā¢performance andā¤ safety. Its proper function supports accurate temperature response, reliable element controlandā£ helps prevent erratic heating or appliance errors that can affect cookingā¤ results and appliance longevity.
Because symptoms of aā£ failing module canā£ mimic otherā¢ component issues, accurate diagnosis ā¢is essential beforeā¢ replacement; āconfirming the moduleā£ as the root cause helps avoid unneeded repairs and additional expense. When replacement is appropriate, selecting the correct, compatibleā part and following recommended service practices-ideally performed orā verified by ā¤a qualified ātechnician-helps ā¢restoreā¤ reliableā operation and ā¤minimizes risk of further damage, maintaining applianceā performance ā¤and safety.
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
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