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Servicing should only be performed by a Qualied Service Technician
CONTINUITY CHECK OF HIGH LIMIT (ECO)
Continuity check of ECO (energy cut-out, high limit)
Black to Black wires of upper probe. Power is off.
IF......... THEN............
Continuity is indicated
(ZERO “0.0” Resistance)
Opens at 203° F; closes at 193° F. If water is below 193° F,
continuity is correct.
Continuity is not present
(meter reads “0.L”)
Replace ECO sensor, if water temperature is below 193° F.
Water is less than 120° F • Reset status LED should be on.
• Replace digital thermostat if control will not manually reset.
CONDITIONS:
• Power On – No Hot Water.
• Red, digital thermostat “Call for Heat” LED – On.
• Turn Power OFF.