Below is a practical, “tech-facing” list of common Maytag Commercial washer error codes and what usually fixes them. Maytag commercial models share platforms, so codes overlap across single-load top and front loaders (MAT/MVW and MAH/MHN series). Always confirm against the service sheet for your exact model, but these are the ones you’ll see most often. Tlinx+2Product Help | Maytag+2
First: quick safe reset
Before deep troubleshooting, clear transient faults:
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Cancel cycle (POWER/CANCEL).
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Power-cycle: unplug or switch breaker off 1 minute, then restore power.
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Re-select cycle and start.
If the same code returns immediately, treat it as a real fault. Product Help | Maytag+1
Common Front-Load Maytag Commercial codes (MAH/MHN series)
F20 / d7 – Slow fill / Long fill
Meaning: Water not reaching target level fast enough. Tlinx
Fix:
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Verify both hot/cold supply valves fully open.
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Check inlet screens for sediment; clean.
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Inspect hoses for kinks/freeze.
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Confirm building pressure is adequate and not shared/closed by a mixing valve.
F21 / d8 – Slow drain / Long drain
Meaning: Washer can’t drain in time. Tlinx
Fix:
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Check for clogged drain hose/standpipe (lint, rags, coins).
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Clean the pump filter/trap if accessible.
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Verify drain height isn’t too high and hose isn’t sealed airtight into standpipe.
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If still failing: test drain pump for blockage or weak impeller.
F22 / d10 – Door lock error
Meaning: Door didn’t lock or lock feedback not seen. Tlinx
Fix:
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Reseat/close door firmly; check for boot/gasket items caught in latch.
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Inspect door strike for wear/bend.
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Check harness to lock; replace lock if intermittent.
F25 – Tachometer / basket speed sensor error
Meaning: Control not seeing correct motor speed feedback. Tlinx
Fix:
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Power reset.
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Check motor/tacho wiring to MCU/CCU.
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Inspect for loose rotor/stator or worn bearings.
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Replace tach/speed sensor or motor if readings are dead.
F11 – Motor Control Unit (MCU) failure
Meaning: MCU not driving motor correctly. Tlinx
Fix:
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Check for seized drum or heavy drag first.
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Verify wiring CCU↔MCU↔motor.
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If wiring/drum OK, MCU is common culprit.
F27 – Overflow condition
Meaning: Water level too high or pressure system fault. Tlinx
Fix:
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Ensure inlet valves aren’t stuck open.
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Inspect pressure hose for cracks, blockage, or being off the sensor.
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Replace pressure switch/sensor if hose is good.
F28 / F70 / F71 – Communication faults (CCU↔UI or CCU↔MCU)
Meaning: Boards lost comms. Tlinx
Fix:
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Hard reset.
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Reseat ribbon/harness connections.
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Look for corrosion at connectors.
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If recurrent: suspect UI, CCU, or MCU depending on which pair is in code.
F33 – Pump sensed disconnected
Meaning: CCU not detecting pump electrically. Tlinx
Fix:
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Check pump harness/connector.
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Measure pump winding resistance.
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Replace pump if open.
Common Top-Load Maytag Commercial codes (MAT/MVW series)
F20 / d7 – Long fill
Same as front load. Tlinx
Fix: water supply, inlet screens, hose kinks, pressure.
F21 / d8 – Long drain
Same as front load. Tlinx
Fix: clear drain path, pump/trap, check for weak pump.
F22 / F26 / d4 – Lid lock / Lid switch faults
Meaning: Lid not locking, or switch feedback missing. Tlinx
Fix:
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Remove items preventing lid closure.
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Inspect lid strike/lock alignment.
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Reseat harness to lid lock.
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Replace lid lock/switch if it won’t consistently read closed.
F03 / d1 – Pressure / water level system fault
Meaning: Pressure sensor or level circuit issue. Tlinx
Fix:
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Inspect pressure hose for pinches, leaks, soap scum blockage.
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Confirm hose is seated at tub and board.
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Replace pressure sensor if hose is good.
F07 – Shifter/actuator fault
Meaning: Control can’t shift between agitate/spin. Tlinx
Fix:
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Check actuator harness and mounting.
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Verify splutch/cam not jammed by debris.
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Replace actuator if not moving in diagnostics.
F11 / d12 – Motor control / motor sense fault
Meaning: Motor drive or speed feedback issue. Tlinx
Fix:
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Look for tub binding or overload.
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Check motor capacitor (on some models) and harness.
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If wiring ok, control or motor may be failing.
F27 – Overflow
Same root causes as front load. Tlinx
Fix: inlet valves, pressure hose/sensor.
“Help” / numeric codes you’ll see in laundromats
These pop on some commercial UIs as 2-digit/hex-ish codes. Tlinx
0F / 33 – Suds / oversuds
Meaning: Too many suds; machine can’t correct imbalance.
Fix:
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Run rinse + spin to clear.
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Reduce detergent; use HE only.
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Check for customers using non-HE soap.
32 – Repeated out-of-balance abort
Fix:
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Redistribute load; avoid single heavy items.
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Verify feet are level and suspension isn’t broken.
1b / 1d / 2A / 2F / 30 / 31 / 34–40 (motor or balance related)
Meaning: Motor not turning, speed errors, or imbalance at specific spin ranges.
Fix:
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Rebalance/downsizing load first.
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If repeats empty: check belt/splutch (top load), bearings, motor, MCU.
71 / 74 / 75 / 88 – Gen-2 card/reader comms
Meaning: Payment system message/state issue.
Fix: reseat/replace reader harness, reboot reader/controller, verify firmware compatibility.
When to stop and swap parts
Go to parts/board replacement when:
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Code returns immediately after reset
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Mechanical checks (water, drain, balance, latch alignment) are clean
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Harness continuity/connection is verified
Boards most commonly implicated:
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MCU for F11/F25/F28 speed/drive issues
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CCU/UI for F70/F71 comm faults
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Pressure sensor for F03/d1 and overflow cascades