Rheem Water Heater Error Code 19: How to Fix It

Hard 1-3 hours High Severity Verified June 2026
Error Code
19
Brand
Rheem
Product Type
water_heater
Severity
High
DIY Difficulty
Hard
Estimated Fix Time
1-3 hours
Rheem water heater error code 19 indicates a wiring or grounding fault where the system has detected an electrical short circuit. This is a serious safety issue that requires immediate attention to prevent electrical hazards, fire risk, or damage to your water heater's control board.
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Tools You'll Need

How to Fix Error Code 19

  1. Turn Off Power and Water Supply

    DANGER: Do not attempt repairs while power is connected. Electrical shorts can cause electrocution, fire, or explosion.
  2. Wait for Cool Down Period

    Water and components may be extremely hot. Allow adequate cooling time to prevent burns.
  3. Remove Access Panel

    Ensure power is still off at the breaker before removing any panels or touching electrical components.
  4. Inspect Wiring Connections

  5. Check Ground Wire Connection

  6. Test for Electrical Continuity

    Ensure meter leads don't touch live wires. Keep power off during all testing.
  7. Inspect Heating Elements

  8. Test Heating Elements

  9. Check Control Board Connections

  10. Repair or Replace Faulty Components

    Use only manufacturer-approved replacement parts. Improper parts can cause fire or electrocution hazards.
  11. Reassemble and Test

    If error code persists or returns, turn power off immediately and contact a qualified technician.

Parts You May Need

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When to Call a Professional

Call a licensed electrician or water heater technician if you're uncomfortable working with electrical systems, if the control board is damaged, if you can't locate the source of the short circuit, or if the error persists after repairs. Professional help is also required for warranty repairs and gas water heater electrical issues.

Frequently Asked Questions

What causes Rheem error code 19?
Error code 19 is caused by electrical shorts in the wiring system, faulty heating elements touching the tank, damaged ground connections, corroded wiring, loose electrical connections, or water getting into electrical components.
Is it safe to use my water heater with error code 19?
No, do not use the water heater with error code 19. This electrical fault presents serious safety risks including electrocution, fire, and explosion hazards. Turn off power immediately and repair the issue before use.
Can I reset Rheem error code 19?
You cannot simply reset error code 19 as it indicates an active electrical safety hazard. The underlying electrical short must be identified and repaired before the error will clear and the unit will operate safely.
How much does it cost to fix error code 19?
Repair costs vary from $100-300 for simple wiring repairs or heating element replacement, up to $400-800 if the control board needs replacement. Professional diagnosis typically costs $100-200.
How do I prevent Rheem error code 19?
Prevent error code 19 by scheduling annual professional maintenance, keeping the area around your water heater dry, ensuring proper ventilation, having electrical connections inspected periodically, and replacing heating elements at the first sign of failure.