No hot water at all from GE electric water heater (no error code displayed).

Safety: Turn OFF the breaker before opening any covers.

Steps to troubleshoot no hot water:

• Check breaker: Verify the water heater breaker is ON and not tripped. Reset if necessary.
• Reset ECO: Remove the upper access panel and press the red reset button on the upper thermostat until it clicks.
• Inspect wiring: At the top junction box, ensure all wire nuts are tight and no wires are burned.
• Test upper element: With power off, test resistance across the upper element. Replace if open.
• Restore power and test: After any repairs, restore power and allow several hours for water to heat.