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ErrBase

Whirlpool Dishwasher E1 F1 Error Code: Main Control Board Relay Fault

Quick Answer

E1 F1 on a Whirlpool dishwasher is a relay fault on the main control board. Unlike most other error codes that point to a field-replaceable component, E1 F1 almost always requires main control board replacement (W10695459, $150-280). Before ordering the board, verify the symptom is not caused by a wiring harness short that damaged the relay: inspect the harness connectors at the board for burn marks.

E1 F1 on a Whirlpool dishwasher is a relay fault on the main control board. Unlike most other error codes that point to a field-replaceable component, E1 F1 almost always requires main control board replacement (W10695459, $150-280). Before ordering the board, verify the symptom is not caused by a wiring harness short that damaged the relay: inspect the harness connectors at the board for burn marks. If any harness shows burns, replace the harness first or the new board may suffer the same failure.

WhirlpoolDishwasherSeverity: highDifficulty: advanced78% DIY Success
Time to Fix
40–90 min
Difficulty
advanced
Parts Cost
$150 – $280
Tools Needed
Torx T20 screwdriver, Multimeter

What Does the E1 F1 Code Mean?

A relay on the main control board has failed. This is one of the few Whirlpool dishwasher codes that almost always points directly to the control board rather than a field component.

Most Likely Causes

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

Main control board relay contact failed (welded shut or open)40%
Wiring harness short causing relay overcurrent24%
Age-related relay contact degradation22%
Power surge burning relay contacts14%

Symptoms You May Notice

  • E1 F1 displayed at cycle start or mid-cycle
  • Dishwasher may start then abruptly stop
  • A specific function (heater, motor, or pump) not operating
  • Burning smell from the control panel area (if relay welded)

Can you reset a Whirlpool dishwasher to clear the E1 F1 code?

E1 F1 cannot be cleared by soft reset - the relay is a hardware failure. A full power cycle (unplug 60 seconds) may clear a transient display, but the code will return if the board relay has physically failed.

Tools Required for Diagnosis

Torx T20 screwdriverMultimeterFlathead screwdriver

Diagnostic Checklist

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

1

Access the main control board by removing the inner door panel

Access the main control board by removing the inner door panel (Torx T20 screws around the door perimeter). Visually inspect the board surface for any burned or discolored relay components, scorched traces, or blackened areas.

2

Inspect all harness connectors plugged into the control board

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
Main Control BoardW10695459 · $150–$280

Repair vs. Replace Calculator

Appliance Age (Years)7 Yrs
Labor Approach
Our Verdict
BORDERLINE
Estimated Cost: $215 (Parts) vs $700 (New Machine)

Frequently Asked Questions

Is it worth replacing a $150-280 control board on an older dishwasher?
Generally yes if the dishwasher is under 8 years old. A replacement board at $150-280 plus installation is significantly cheaper than the $500-900 dishwasher replacement cost. For units over 10 years old, evaluate total repair cost vs. replacement value.
Can a bad motor or heater cause E1 F1?
Yes. If a shorted motor or heater draws excess current through the board relay, the relay can weld shut or burn open. Replacing only the board without fixing the root cause (shorted motor) will destroy the new board as well.

Related Whirlpool Dishwasher Error Codes

Code: F8 E4Whirlpool Dishwasher F8 E4 Error Code: Wash Motor FaultCode: F7 E1Whirlpool Dishwasher F7 E1 Error Code: Heater Circuit Fault

Same Fix Works on These Brands

Whirlpool shares the same hardware platform with these brands. The diagnosis and repair steps are identical.

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Models Known to Experience E1 F1 Errors

This repair applies to most Whirlpool dishwashers with this error code. Common model numbers include:

WDT780SAEM, WDF550SAHZ, WDT730PAHZ, WDT750SAHZ, WDT970SAHZ, WDF518SAHM, WDT720PADE

Last verified for technical accuracy on March 14, 2026