Integrated Heater Control: Display Lights - A.O. Smith SERIES 120 Service Handbook

INTEGRATED HEATER CONTROL: DISPLAY LIGHTS

Power Energy Cut
Off Status
Call for Reset
Heat Status
LED
STATUS
Calling for heat
The ECO (Energy Cut-Off) has
opened.
No power
Tank is at a set temperature ±
2° F.
Tank has cooled
below 120° F.
Preceded by "ECO Open"
indication.
Servicing should only be performed by a Qualifi ed Service Agent
TROUBLESHOOTING
INDICATION
Normal status. No action required.
• Check for excessively hot water
(203° F or higher).
• Correct the problem
Check the breaker.
No action required.
• Push the manual reset button.
Refer to Figure 17.
• Troubleshoot for the reason that the ECO
opened.
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ACTION