MAL9000AXX Whirlpool LP Gas Conversion Kit is a factory-specified conversion kit designed to modify compatible Whirlpool gas appliances from natural gas operation to liquid propane (LP) operation. The kit typically contains components such as burner orifice inserts, regulator or regulator adjustment parts, and any necessary fittings or gaskets required to change the fuel metering and pressure characteristics of the appliance. As a mechanical/gas fuel conversion assembly,its purpose is to adapt the appliance’s gas delivery and combustion geometry so the appliance operates safely and predictably on a different fuel with a different energy density and pressure requirement.
Inside the appliance the conversion kit directly interfaces with the manifold gas valve, burner assemblies, and pressure regulation system. By altering orifice sizes and/or regulator settings, the kit changes the delivered volumetric flow rate and the air-fuel mixture at each burner, affecting ignition, flame stability, and heat output. As these changes influence combustion characteristics, the conversion interacts indirectly with ignition modules, safety thermostats/thermocouples, and exhaust/venting performance; incorrect conversion or improper installation can cause incomplete combustion, soot, or unsafe venting conditions.
this article will explain the intended function of the MAL9000AXX kit, specify typical compatibility considerations and model restrictions, and describe common failure symptoms to watch for after conversion (such as weak or unstable flames, yellow tipping, soot, or improper heat levels). It will also cover practical troubleshooting steps-visual inspections, leak checks, manifold pressure verification, and verifying orifice sizes-and provide replacement considerations including required tools, adherence to appliance service documentation, torque and sealing practices, and recommendations for professional or certified installation to ensure safe and code-compliant operation.
Table of Contents
- Function and Role of the Conversion Kit within Whirlpool LP Gas Appliance Fuel Delivery
- How the MAL9000AXX Whirlpool LP gas Conversion Kit interfaces with Burner Orifices, Regulators, and Safety Controls
- Common Failure Symptoms: Flame Irregularities, Gas Pressure Variations, and Safety Interlock Triggers
- compatibility, Replacement considerations, and Installation Diagnostics for LP Gas Conversions
- Q&A
- Wrapping Up
Function and Role of the Conversion Kit within Whirlpool LP Gas Appliance Fuel Delivery
The MAL9000AXX Whirlpool LP Gas Conversion Kit provides the mechanical components and calibrated orifices required to change a compatible Whirlpool appliance from natural gas to liquefied petroleum (LP) operation. the kit functions by replacing burner and pilot orifices with sizes matched to propane’s higher energy content and by supplying the appropriate regulator or regulator spring so the appliance’s manifold pressure is reduced/adjusted to the LP specification. These changes change volumetric flow and pressure at each burner so flame shape, heat input, and safety-valve actuation remain within the appliance’s designed ranges; the conversion components therefore interact directly with the valve, pilot assembly, and regulator to maintain stable combustion characteristics after conversion.
Compatibility depends on the specific Whirlpool model and the appliance data-plate values; verify model/serial numbers and the range of supported configurations before installing the kit. Typical field practice for a qualified technician is: replace the orifices, set the regulator to the LP pressure, reassemble and seal gas fittings, than confirm burner flame patterns and perform a calibrated manifold-pressure and leak test. Incorrect orifice selection or regulator setting can produce sooting, unstable flames, or elevated carbon monoxide levels, so post-conversion verification (flame appearance, heat output, and measured manifold pressure) is required to confirm correct behavior in service.
- Kit components commonly included: calibrated burner and pilot orifices, regulator or spring, conversion label, and installation instructions.
| Item | Description |
|---|---|
| Typical LP manifold pressure | Approximately 10 in. W.C. (≈25 mbar) target for many appliances after conversion; verify appliance specification. |
How the MAL9000AXX Whirlpool LP gas Conversion Kit Interfaces with Burner Orifices, Regulators, and Safety Controls
The MAL9000AXX Whirlpool LP Gas Conversion Kit provides the specific mechanical and pneumatic components needed to adapt a Whirlpool gas appliance from natural gas to propane.The kit interfaces directly with burner orifices by supplying smaller jets sized to limit flow for the higher energy density of LP, and it includes the regulator modification or cap that increases manifold pressure to the LP specification.These changes alter the volumetric flow at each burner while leaving the appliance’s primary gas valve and electronic control logic intact; the regulator change sets the downstream pressure so the safety valves and flame-sensing devices operate within their expected ranges for propane combustion.
- Burner orifice jets – replaceable nozzles that control flow rate and flame size
- Regulator adjustment/cap – modifies manifold pressure for LP operation
- Pilot orifice or ignition interface – ensures proper pilot/current at new fuel density
- Manifold/test port – access point for pressure verification with a manometer
- safety controls (thermocouple/flame sensor/gas valve) – depend on correct pressure and flame geometry to function properly
After installing the kit, verify performance with a pressure gauge and visual flame inspection: target LP manifold pressures are generally around 10″ water column (W.C.), and correct combustion produces a steady blue flame with minimal yellow tipping. If you observe lazy flames, delayed ignition, or frequent valve shutoff, re-check that the orifice sizes match the included chart for your model and that the regulator cap or spring is seated correctly; these symptoms usually indicate incorrect flow or pressure rather than an electrical control fault. The conversion interfaces mechanically and pneumatically – it does not alter electronic control boards – so practical verification steps are pressure measurement at the test port, flame-shape assessment at each burner, and a leak test on all fittings after reassembly.
| Item | Description |
|---|---|
| Orifice size | Smaller jet diameters supplied for LP to reduce volumetric flow |
| Target manifold pressure | Approximately 10″ W.C. for LP on most Whirlpool range/oven models |
| Common symptom of misconfiguration | Yellow tipping, weak flame, delayed ignition, or nuisance shutoff |
Common Failure Symptoms: Flame Irregularities, Gas Pressure Variations, and Safety Interlock Triggers
The MAL9000AXX Whirlpool LP Gas Conversion Kit replaces the factory natural-gas orifices and adjusts regulator settings so burner flow characteristics match propane’s higher energy density and different pressure requirements. When the kit or its associated components are missing, incorrectly installed, or incompatible with the appliance model, expected flame shape and stability change: flames may become elongated with yellow tipping, lift from the burner ports, or produce soot. As the conversion alters orifice diameter and regulator calibration, the manifold pressure and transient response of the valve assembly are critical; incorrect manifold pressure or a blocked/undersized injector will produce weak, fluttering, or delayed ignition across multiple burners, while a single-bank symptom points to a localized valve, orifice, or burner port issue.
- Yellow or sooting flame – likely over-fueling from mismatched orifices or improper air shutter adjustment.
- Low,small,or unstable flame on all burners – regulator misadjustment,inlet restriction,or incorrect manifold pressure.
- Intermittent flameout or failure to light – clogged orifice, weak spark/ignition, or valve seating problem.
- Repeated safety interlock trips (thermocouple, flame sensor, or high-limit) – insufficient flame signal, flame impingement, or shorted/failed sensor.
For practical troubleshooting, begin with a visual and leak inspection, verify that the kit components match the Whirlpool model designation, then measure manifold pressure at the valve with a manometer under a known load; typical LP manifold pressure after conversion is approximately 10-11 inches W.C. If all burners show low flame, isolate supply-side causes (regulator, supply pressure, or inlet filter); if a single burner is weak or irregular, remove and inspect the orifice and burner ports for debris or incorrect sizing. When safety interlocks are tripping, test flame-sensing circuits (thermocouple continuity or flame-rectification milliamps) and verify that flame contours contact the sensor properly – weak flame current often clears when correct pressure and orifice size are restored. Follow a logical sequence: confirm kit/model compatibility, verify mechanical assembly and venting, perform pressure and leak tests, then validate sensor function to pinpoint whether the fault is due to the conversion hardware, supply conditions, or the appliance controls.
| Item | Description |
|---|---|
| Flame irregularity | Mismatch of orifice size or air shutter settings causing yellow tipping, lifting, or soot on burner ports. |
| Gas pressure variation | Regulator calibration, inlet restrictions, or supply pressure drop producing low or fluctuating manifold pressure. |
| Safety interlock triggers | Insufficient flame signal,faulty thermocouple/flame sensor,or thermal limit activation due to improper flame shape or combustion byproducts. |
Compatibility, Replacement Considerations, and Installation Diagnostics for LP Gas Conversions
The MAL9000AXX Whirlpool LP Gas Conversion Kit provides the hardware and instructions required to change a compatible Whirlpool gas appliance from natural gas to propane (LP). Conversion is accomplished by replacing burner orifices and in certain specific cases installing a different regulator or jet supplied in the kit; the smaller orifice diameters and altered regulator settings restrict flow to match the higher energy content and nominal manifold pressure of LP systems. Before using the MAL9000AXX whirlpool LP Gas Conversion Kit, verify the appliance model and gas valve part number against the kit’s compatibility list-some valve assemblies are not convertible and require full replacement, and differences in orifice thread or burner port geometry can prevent a proper seal or correct flow even when the kit parts fit physically.
Replacement considerations and installation diagnostics focus on matching flow characteristics and confirming safety-device operation after conversion.A technician should measure manifold pressure with a manometer, inspect flame shape and stability (weak, lifting, or yellow-tipped flames indicate incorrect orifice/regulator settings or insufficient primary air), and perform a tightness check on all gas fittings. If symptoms persist after kit installation-excessive soot, delayed ignition, or flame rollout-replace the valve or pilot assembly with the OEM specified part rather than trying to ‘‘tune’’ the system; confirm that safety interlocks (thermocouple/thermopile, flame sensors) are within tolerance and that venting and combustion air are adequate for LP operation.
- Compatibility check: confirm appliance model and gas valve type; do not install if valve is listed non-convertible.
- Installation diagnostics: leak test,manifold pressure measurement,flame inspection,and safety-device verification.
- Replacement trigger: persistent improper flame shape or pressure that cannot be corrected by the kit indicates valve or burner replacement.
| Item | Description |
|---|---|
| Orifice | Controls fuel flow to each burner; kit supplies appropriately sized LP orifices to reduce flow relative to natural gas. |
| Regulator | Sets manifold pressure for LP; verify regulator output with a manometer after installation. |
| Diagnostic checks | Leak test, manifold pressure reading, flame pattern inspection, and safety sensor continuity. |
Q&A
What is the MAL9000AXX Whirlpool LP Gas Conversion Kit and when is it used?
The MAL9000AXX is a conversion kit intended to convert compatible Whirlpool gas ranges/ovens from natural (NG) gas to propane/LP gas. It is used whenever the appliance will be supplied with LP instead of natural gas – for example,when moving the appliance to a home that uses propane or when changing fuel sources during installation. The kit contains the parts and instructions needed to change burner orifices and regulator settings so the appliance will operate safely on LP.
How do I know if the MAL9000AXX kit is compatible with my Whirlpool appliance?
Check the appliance model and serial number against the kit’s compatibility list in the kit instructions or the Whirlpool parts site. The appliance data plate (usually inside the oven door frame or on the back of the range) shows the model/serial and original gas type. Only use the conversion kit specified for your model - using the wrong kit can create unsafe operation. If you’re unsure, contact Whirlpool customer support or a qualified service technician to verify compatibility before purchasing or attempting conversion.
What parts are included in the MAL9000AXX kit?
Contents vary by kit version, but a typical LP conversion kit for Whirlpool ranges includes LP orifice(s) for the surface burners and oven/broiler, an instruction sheet with step-by-step conversion procedures, a new regulator cap or adjustment instructions, a conversion label/sticker to apply to the appliance, and possibly replacement gaskets or screws. Always unpack and inventory the kit against the included parts list before starting the conversion.
Can I install the MAL9000AXX kit myself, or do I need a professional technician?
Installing a gas conversion kit involves working with gas lines, changing orifices/regulator settings, performing leak tests, and verifying manifold pressure. For safety and code compliance, Whirlpool and many local jurisdictions recommend a qualified, licensed gas technician perform the conversion. If you are a competent appliance service technician familiar with gas appliances and local codes, you may perform the conversion following the manufacturer instructions. Unqualified conversion can create a fire/explosion risk and may void warranties or violate local regulations.
What tools and supplies are typically required to perform the conversion?
Typical tools and supplies include adjustable wrenches, nut drivers or screwdrivers for removing burner components and regulator access, a small pipe wrench for the gas connection if required, replacement orifices from the kit, a manometer or gas pressure gauge (to verify manifold pressure), soapy water or an approved leak-detection solution, and protective equipment. Do not attempt to complete the conversion without a proper pressure gauge and the ability to perform a proper leak and pressure test.
What are the basic steps and checks performed during the conversion?
General steps (follow the kit’s instructions exactly): 1) Shut off and isolate the gas and disconnect the appliance. 2) Remove burner caps, grates and access panels to reach orifices and the regulator. 3) Replace natural gas orifices with LP orifices supplied by the kit for all affected burners including oven/broiler. 4) Adjust or change the regulator setting to the LP position per instructions. 5) Reassemble components and reattach gas supply. 6) Perform a gas leak test at all connections. 7) Measure manifold pressure with a manometer to ensure it matches the specification for LP (per the appliance data). 8) Light burners and check flame characteristics and oven operation; make small air shutter adjustments if needed. 9) Apply the supplied conversion label to the appliance and record the conversion date. Always follow the manufacturer’s detailed procedure and safety warnings.
How should the burner flames and oven performance look after conversion to LP?
Properly converted LP burners should have a stable, mostly blue flame with minimal yellow tips and no notable lifting or soot. LP flames may have a slightly shorter, more well-defined pattern than natural gas. The oven should reach temperature within expected time and maintain temperature reasonably; thermostat calibration might potentially be checked and adjusted per the service manual if needed. If you see excessive yellow tipping, soot, flame instability, or smell gas, shut off the appliance and gas supply immediately and have a qualified technician troubleshoot.
Do I need to notify anyone or follow codes after converting with the MAL9000AXX kit?
Yes. Conversion of a gas appliance is regulated in many jurisdictions. In some areas the work must be performed by a licensed gas fitter and an inspection or permit may be required. Keep documentation that the appliance was converted (the conversion sticker provided in the kit and notes of who performed the work). Also verify that performing the conversion as directed by Whirlpool preserves any applicable warranty – improper conversion may void warranty coverage. When in doubt, consult local building/gas code authorities or a licensed technician.
Wrapping Up
The MAL9000AXX Whirlpool LP Gas Conversion Kit serves a specific but critically important role in adapting compatible Whirlpool appliances for use with liquid propane fuel. By providing the correct orifices, regulators, and related components engineered for LP operation, the kit supports safe, efficient combustion and helps ensure the appliance performs as intended when switched from natural gas to liquefied petroleum.
Accurate diagnosis and timely replacement are essential to realizing those benefits. Determining whether a conversion, repair, or component replacement is required should be based on a careful assessment of appliance condition, fuel type, and operating performance; when conversion parts are worn, missing, or incorrectly specified, replacement with the correct MAL9000AXX kit helps prevent unsafe operation, poor efficiency, and voided warranties.
For safety and compliance,follow the manufacturer’s specifications and applicable codes,and rely on a qualified technician for diagnosis,installation,and post-conversion testing. When selected and installed correctly, the MAL9000AXX Whirlpool LP Gas Conversion Kit contributes to reliable, code-compliant operation and the continued safe use of the appliance.
Professional Appliance Service
If your appliance requires professional diagnosis or repair, visit
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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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