Professional Appliance Repair Training

Learn Dishwasher Repair:
Master The Wash Logic

From “Not Draining” to “Poor Wash Quality.” If you want to learn dishwasher repair correctly, you need to understand the hydro-dynamics of the machine. Learn to diagnose circulation pumps, diverter valves, turbidity sensors, and heating circuits with confidence.

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Learn dishwasher repair training demonstration showing internal components

More Than Just A Pump

Modern dishwashers are smart. They sense soil levels and divert water flow. To safely learn dishwasher repair, you must distinguish between a bad motor, a sensor error, or a logic failure on the board.

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Poor Wash Quality

Is the customer loading it wrong, or is the circulation pump failing? We teach you how to listen for “cavitation” and check for sheared impellers—a common failure where the motor runs but moves no water.

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Not Draining

The classic failure. We teach you to identify if the issue is a physical blockage in the check valve, a failed drain solenoid, or a dead board output. Never replace a pump when the issue is a $5 piston valve.

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Heating & Drying

Heating failures leave dishes wet and dirty. We teach you how to verify heater continuity and troubleshoot the safety chain—thermostats, TCOs, and relays—that protects the unit from melting down.

The Heart of the Machine

The Circulation Pump

If water isn’t moving, dishes aren’t cleaning. We break down how to test standard capacitor-start motors versus modern variable speed inverter pumps (BLDC) found in Bosch and high-end GE models.

We teach you how to identify a “stuck” motor vs a “dead” motor, and how to verify if the diverter valve is correctly sending water to the top rack or the bottom rack.

  • ✓ Testing Run Capacitors
  • ✓ Diverter Motor Positioning
  • ✓ Verifying Water Fill Levels
Dishwasher wash pump assembly

Smart Sensing

Turbidity & Venting

Modern units use optical sensors (Turbidity Sensors) to “see” how dirty the water is by measuring light refraction. When you learn dishwasher repair with us, we teach you how these inputs change the cycle time and how to test if the “Smart Wash” logic is functioning.

You will also learn about active venting systems, including wax motors and fan-assisted drying, to solve those “my dishes are still wet” complaints.

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Dishwasher turbidity sensor and vent assembly

See The Training In Action

Supplement your coursework with deep technical dives. Check out our free resources for diagnostic examples and theory.

Diagnostic Videos

Watch step-by-step troubleshooting guides, live multimeter testing, and component teardowns.

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Tech Podcast

Deep dives into the science of repair. We break down electrical circuits, schematics, and error codes.

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— Jp Rivera, Listener

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Choose Your Training Path

The Dishwasher Repair module is included in our Certified Professional bundle.

Fundamentals

Free

Perfect for beginners. Learn electrical theory, multimeter usage, and the core “Theory of Operation” for major appliances.

  • ✓ Electrical Theory Basics
  • ✓ Multimeter Training
  • ✓ Self-Paced Access
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Certified Professional

$475

Master diagnostics, schematics, and business skills. Includes the Dishwasher Module and certification.

  • All Repair Modules (Dishwasher Included)
  • ✓ Microwave Course Included (Free)
  • ✓ 1-on-1 Mentorship Sessions
  • ✓ ATA Official Certification
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Microwave Specialist

$125

Add high-voltage microwave diagnostics to your skillset. Safe discharge procedures and magnetron testing.

  • ✓ High Voltage Safety
  • ✓ Magnetron Diagnostics
  • ✓ Door Interlock Switches
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Dishwasher Repair Training FAQ

Why is the dishwasher not cleaning properly?
Poor cleaning is rarely a “bad board.” It is usually related to water temperature, wash arm rotation, or the circulation pump. We teach you how to verify if the wash motor is generating enough pressure to actually spin the spray arms.
Do I need to pull the dishwasher out to repair it?
Not always. Many components, like the inlet valve, drain pump, and control board, are accessible from the front toe-kick panel or the door. We teach you how to diagnose components from the front to save time and effort.
What happens when the customer says it’s leaking, but I can’t replicate it?
Intermittent leaks are often caused by user error rather than mechanical failure. We teach you how to identify issues like oversudsing from improper detergent usage or poor loading practices that divert water over the door seal. This allows you to confidently show the customer that the unit is mechanically sound and advise them on proper use.
Do dishwashers have diagnostic modes and error codes?
Yes, most modern units do, but they shouldn’t be trusted blindly. An error code might say “Drain Failure,” but the root cause could be a pressure sensor glitch. If you want to learn dishwasher repair professionally, we teach you the theory of operation so you can interpret what the board *thinks* is wrong versus what is *actually* wrong.