Frigidaire Factory Service ManualFault Code: i50

Frigidaire Dishwasher Error Code i50: Wash Circulation Motor Triac / Drive Failure

The main control board detects wash pump motor over-current or a shorted motor drive triac, stopping cycle execution to prevent board burnout.

Target Appliance

dishwasher

OEM Certified Technical Diagnostic Tree

Diagnostic Tool Required

Digital Multimeter

Measure Ohms resistance, continuity & line voltage.

Triage Complexity

Advanced Diagnostic

4 Sequential manufacturer inspection branches.

Sequential Factory Diagnostic Tree

Perform each diagnostic step in order. Disconnect electrical power and turn off utility shutoffs before inspecting wiring or internal mechanical assemblies.

Step 1: Physical & Electrical InspectionMultimeter & Visual

Action: Disconnect power, remove kickplate, and access the wash circulation pump motor mounted on center bottom sump.

Bench Test: Disconnect wash motor wiring harness and measure resistance across motor winding terminals.

Expected Standard: Normal winding resistance is between 8.0 and 15.0 ohms depending on BLDC model.

If Failed / Out of Spec:

Winding reads open (0L) or shorted (< 2 ohms). Replace wash pump motor (5304519906).

If Passed:

Proceed to Step 2.

Step 2: Physical & Electrical InspectionMultimeter & Visual

Action: Inspect wash motor impeller shaft for foreign object lockup.

Bench Test: Rotate motor cooling fan blades or impeller with a wooden dowel.

Expected Standard: Motor spins smoothly with zero mechanical binding.

If Failed / Out of Spec:

Extract broken glass, toothpick, or replace wash motor assembly (5304519906).

If Passed:

Proceed to Step 3.

Step 3: Physical & Electrical InspectionMultimeter & Visual

Action: Check motor winding insulation resistance to tub ground.

Bench Test: Measure resistance from each motor terminal pin to the stainless steel tub frame.

Expected Standard: Infinity (mega-ohms).

If Failed / Out of Spec:

Internal motor short to ground. Replace wash pump motor (5304519906).

If Passed:

Proceed to Step 4.

Step 4: Physical & Electrical InspectionMultimeter & Visual

Action: Inspect main control board wash motor triac and solder traces.

Bench Test: Inspect control board inside door for burnt components or blistered triac heatsink.

Expected Standard: Pristine circuit board traces, no scorch marks.

If Failed / Out of Spec:

Replace main electronic control board (5304512731).

If Passed:

Perform service diagnostic self-test to verify normal current draw.

Verified OEM Replacement Parts

Cross-referenced factory part numbers for Frigidaire dishwasher error code i50. Always replace defective components with authentic OEM parts to maintain UL safety certification.

Component Name	OEM Part Number	Manufacturer	Status
Wash Circulation Pump Motor Assembly	`5304519906`	Frigidaire	Direct Fit OEM
Main Electronic Control Board Assembly	`5304512731`	Frigidaire	Direct Fit OEM
Circulation Pump Mounting Clamp & Gasket	`5304504085`	Frigidaire	Direct Fit OEM

Need Local Diagnostic Assistance?

Connect with a Certified Frigidaire Technician in Your Area

If multimeter testing reveals an internal short, locked motor, or fried control board, let an experienced local technician complete the repair with certified OEM replacement parts.

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Frequently Asked Questions: Frigidaire i50

What causes Frigidaire dishwasher error code i50?

The main control board detects wash pump motor over-current or a shorted motor drive triac, stopping cycle execution to prevent board burnout.

Can I reset the i50 code by unplugging the dishwasher?

While disconnecting power for 5 minutes may temporarily clear the display control memory, the i50 code will reoccur once the microcontroller detects the mechanical or electrical fault again.

What OEM replacement parts are required for Frigidaire i50?

Common OEM replacement components include: Wash Circulation Pump Motor Assembly (OEM #5304519906), Main Electronic Control Board Assembly (OEM #5304512731), Circulation Pump Mounting Clamp & Gasket (OEM #5304504085).