Frigidaire Dishwasher Error RT

⚡ Quick Answer: The Frigidaire dishwasher RT error code indicates that the appliance has inadvertently entered a relay/triac test mode, disrupting normal wash cycles.... ✅ DIY Fixable

What Does Error RT Mean?

The Frigidaire dishwasher RT error code indicates that the appliance has inadvertently entered a relay/triac test mode, disrupting normal wash cycles. This may be accompanied by unusual noises, suggesting the drain pump could also be affected. If the RT code is displayed without the dishwasher performing its usual functions, it points to a diagnostic state rather than a direct fault. A temporary control glitch could also trigger this test code display.

Common Symptoms:

  • RT code displayed on control panel without dishwasher performing a normal wash cycle
  • Dishwasher appears to be in a test or diagnostic mode

Possible Causes

  • Dishwasher inadvertently entered relay test mode (medium)
  • Temporary control glitch triggering test code display (low)

How to Fix Error RT

DIY Fix Attempt to clear RT code via reset

  1. Turn off power to the dishwasher by switching off circuit breaker or unplugging if accessible
  2. Wait at least 5 minutes to allow control board to fully reset
  3. Restore power and attempt to start a normal wash cycle

Technician Only Verify control panel and board state

  1. Place dishwasher into diagnostic mode per service manual to confirm whether RT is actual test code vs unintended entry
  2. Inspect control panel connections and main control board for loose wiring or signs of failure
  3. Confirm that no unintended buttons or sequences are triggering diagnostic mode

Parts needed: control panel assembly, main control board

🛑 When to Call a Pro:
  • If RT persists after attempted resets and normal operation does not resume
  • If diagnostic mode appears to be unintentionally triggered repeatedly indicating control board/A UI issue

Technical Specifications

wattage 60W
component Drain Pump
resistance 10-30 ohms
part_number 154567401
voltage_rating 120V AC

Common Questions

What does RT error mean on frigidaire dishwasher?

The RT error indicates the dishwasher is in a diagnostic relay test mode, disrupting normal operations.

Can I fix frigidaire dishwasher RT error myself?

Yes, you can attempt to reset the RT code by turning off the power for 5 minutes and then restoring it.

How much does it cost to fix RT error?

Estimated repair costs for the RT error range from $100 to $350, depending on the required parts.

When should I call a technician for RT?

Call a technician if the RT error persists after resets or if the diagnostic mode triggers repeatedly, indicating a control board issue.

Sources & References

Data last verified: 2026-07-07

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