22 Servicing should only be performed by a Qualied 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.