A.O. Smith BTR 201, Service Handbook

Page: 35 / 40

33
Servicing should only be performed by a Qualified Service Technician
DISPLAY LIGHTS ON INTEGRATED HEATER CONTROL
LED
STATUS
INDICATION ACTION
Calling for heat Normal status. No action required.
The ECO (Energy Cut-Out) has
opened.
• Check for excessively hot water (203° F or
higher).
• Check the resistance of the temperature
probes and continuity of the high limit (ECO).
No power Check the breaker.
Tank is at a set temperature ± 2° F. No action required.
Tank has cooled below 120° F.
Preceded by “ECO Open” indication.
• Push the manual reset button.
• Check the resistance of the temperature
probes and continuity of the high limit (ECO).