Troubleshooting; Circuit Diagram - A.O. Smith EWS-6 User Manual

Troubleshooting

Problem
Green and
Red light off
No hot water
Green light on
Red light off
No hot water
Water temperature is
too high
Water heats slowly
Thermostat does not
shut off
Piping connection leaks
Leaky cover

Circuit Diagram

Black
Green
White
Cause(s)
No power to heater
Thermal cutout switch open
Control circuit or internal
wiring error
Non-functioning
thermostat
Control circuit or internal
wiring error
Thermostat set is too high
Thermal cutout trips
Non-functioning element
Non-functioning
thermostat
Improper calibration
Connection not sealed
Tank or parts leak
High limit
Thermostat
Green light
Action
Turn on electrical switch. Check for
blown fuses or tripped breaker
Call Customer Care Centre on 1.800.103.2468
Call Customer Care Centre on 1.800.103.2468
Call Customer Care Centre on 1.800.103.2468
Thermostat may need to be replaced
Call Customer Care Centre on 1.800.103.2468
Call Customer Care Centre on 1.800.103.2468
Element may need to be replaced
Call Customer Care Centre on 1.800.103.2468
Thermostat may need to be replaced
Call Customer Care Centre on 1.800.103.2468
Thermostat may need to be replaced
Call plumber
Shut off power immediately, and
Call Customer Care Centre on 1.800.103.2468
Red light
Element
7