CONTINUITY CHECK OF HIGH LIMIT (ECO)

CONDITIONS:

Power On – No Hot Water.

Red, digital thermostat “Call for Heat” LED – On.

Turn Power OFF.

 

Continuity check of ECO (energy cut-out, high limit)

 

Black to Black wires of upper probe. Power is off.

IF

 

THEN

Continuity is indicated

 

Opens at 203° F; closes at 193° F. If water is below 193° F,

(ZERO “0.0” Resistance)

 

continuity is correct.

Continuity is not present

 

Replace ECO sensor, if water temperature is below 193° F.

(meter reads “0.L”)

 

 

Water is less than 120° F

 

• Reset status LED should be on.

 

 

• Replace digital thermostat if control will not manually reset.

22

Servicing should only be performed by a Qualified Service Technician

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American Water Heater 381T1546NOX, ULTRA LOW NOx SERIES 104, BCL manual Continuity Check of High Limit ECO, Conditions, Then

381T1546NOX, 395T1996NOX, BCL, 381T1206NOX, 395T2506NOX specifications

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