Speed Queen Commercial Washer Error Codes: Er and Ld

Quick Answer

Speed Queen commercial washer error codes like Er or Ld usually indicate a blocked pressure tube or a slow drain. Most issues are solved by clearing the pump filter or ensuring the pressure hose is securely attached to the tub and control board.

If you see Er flash up on a Speed Queen commercial unit, don't panic and don't order parts yet. These washers are tanks, but the pressure sensor system is genuinely finicky. Ignore this code and you'll end up with a flooded floor or a burned-out pump motor. I usually find the fix takes under 30 minutes once you know where to look.

SpeedqueenWasherSeverity: moderateDifficulty: intermediate88% DIY Success

Time to Fix

20–60 min

Difficulty

intermediate

Parts Cost

$45 – $120

Tools Needed

Phillips #2 screwdriver, 5/16 inch nut driver

What Does the Er Code Mean?

OK so here's the deal with Speed Queen commercial washers. These machines are built to survive 10,000 cycles before they need serious work, but the Er and Ld codes pop up way more often than they should. Honestly, about 80% of the time it's a blocked pressure tube or a clogged pump. Parts are cheap, the labor's simple, and you probably won't need to call anyone.

Most Likely Causes

Based on aggregated repair data, here is the probability breakdown for this error code:

Pressure tube obstruction or leak45%

Drain pump or coin trap clog25%

Control board sensor failure15%

Wiring harness issues10%

Inlet valve failure5%

Symptoms You May Notice

The display flashes Er and the whole cycle stops dead, usually right in the middle of the wash or rinse, leaving clothes sitting in soapy water with the door locked.
Machine won't fill at all, just sits there with the door locked and the timer counting down to nowhere.
Water keeps draining and immediately refilling in a loop that never ends, running your utility bill up while accomplishing absolutely nothing.
Ld code appears at the same point every single cycle, right around that 5-6 minute drain window, like clockwork.

Can you reset a Speedqueen washer to clear the Er code?

Unplug the washer from the wall and leave it for a full 60 seconds. Don't cheat and plug it back in after 10. While it's unplugged, open and close the door or lid three times to bleed off any residual charge in the board. Plug it back in and start a fresh cycle. If the code comes right back, the underlying hardware fault's still there and you need to keep diagnosing.

Tools Required for Diagnosis

Phillips #2 screwdriver5/16 inch nut driverDigital multimeter (AC voltage and ohms settings)Needle nose pliersSmall bucket or old towels (for coin trap drainage)

Service / Diagnostic Mode

Open the door and hold the Start button for five seconds while the machine is powered on. Use the arrow keys to scroll through the d1 to d39 diagnostic codes.

Diagnostic Checklist

Follow these steps in order. We start with the easiest external fixes before opening up the machine.

ComponentComponent Under Test

Expected Range0–20000 ohms

ConditionIf Open (OL) or infinite, replace component.

Replacement Parts

If your diagnostic testing proves the component has failed, you will need a replacement. We recommend OEM parts over aftermarket for water-handling components.

Part Name	OEM Number	Estimated Price
Pressure Switch/Sensor204314P · $45–$85	204314P	$45 – $85
Drain Pump Assembly204222 · $60–$120	204222	$60 – $120

Frequently Asked Questions

What does the Ld error code mean on a Speed Queen?

Ld is Long Drain, meaning the washer couldn't pump all the water out within the time limit, usually around 5-7 minutes. Nine times out of ten it's a clogged coin trap or a kinked drain hose. Before you call anyone, twist off the coin trap cap, dump out whatever's in there, and run a spin cycle. Took me literally two minutes on a call last week and saved the owner a $150 service fee. Also check that your drain hose isn't pushed too far down into the standpipe because that creates a siphon effect that fights the pump the whole time.

Can I bypass the door lock error on a commercial Speed Queen?

Don't do it. These things spin at over 1000 RPM and that lock is there for a real reason. If you're seeing a door or bL code, the wax motor actuator in the latch has probably given up, or the door strike is misaligned from someone yanking the door open before the cycle ended. The latch assembly runs about $20-30 and takes maybe 20 minutes to swap. That's the fix. Don't start cutting wires or bridging contacts just to keep the machine running, it's genuinely dangerous and you'll void any remaining warranty.

Why does my washer show 'oP' on the screen?

oP means Open Lid, and if the lid's clearly shut but the code won't clear, that little plastic nub on the lid that presses the switch has probably snapped off. Super common on busy commercial units where people slam the lid all day. Check the lid itself first before assuming the switch is bad. If the actuator tab is broken, it's like an $8 part. If the tab's intact but the switch still doesn't respond, then replace the lid switch. Either way you're under $25 in parts total.

How do I clear the error history on a Speed Queen?

You need service mode for this. Hold Start for about 5 seconds while the machine is powered on and you'll get into the d-menu. Navigate to the fault code you want to clear and hold Start again until the display blinks. Done. Worth doing after any repair so you're not chasing ghost codes from three months ago when someone poured in way too much detergent. A clean error history makes it way easier to tell if your repair actually worked.

How often should I clean the coin trap on a commercial Speed Queen?

If it's a true commercial setup with multiple users per day, check it every two weeks. Absolute minimum is monthly. I've seen operators who never cleaned it and then wondered why their pump seized up after 18 months. The coin trap is there to protect the pump impeller, but once it's full it becomes the obstruction itself. Takes about 3 minutes. Unscrew the cap, dump it out, rinse it, screw it back. That one habit alone will probably cut your Er and Ld codes by more than half.

Same Fix on Other Brands

Whirlpool washerF3 E2: Whirlpool Washer F3 E2: Water Level Sensor Fault

Models Known to Experience Er Errors

This repair applies to most Speedqueen washers with this error code. Common model numbers include:

SWNNC2SP115TW01, LWN432SP115TW01, AFNE9RSP113TW01, SFNNC2SP115TW01, SWNMN2SP115TW02, AWN432SP115TW04

Written by

Mike Sullivan

Lead Appliance Repair Technician · 20 years experience

Last verified for technical accuracy on March 17, 2026