Troubleshooting; Circuit Diagram; Reset Button - A.O. Smith EWS 1 User Manual

Troubleshooting

Problem
• Green and Red
light off
• No hot water
• Green light on
Red light off
• No hot water
• Water heats slowly
• Thermostat does
not shut off
• Piping connection
leaks
• Leaky cover
Note: Call Customer Care Centre on 1.800.103.2468

Circuit Diagram

1
L
5
N
G
Possible 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
Non-functioning element
Non-functioning
thermostat
Improper calibration
Connection not sealed
Tank or parts leak
2
4
Solution
Turn on electrical switch. Check for
blown fuses or tripped breaker
Press Reset button
Call Customer Care Centre
Call Customer Care Centre
Call Customer Care Centre
Call Customer Care Centre
Call Customer Care Centre
Call plumber
Shut off power immediately and
Call Customer Care Centre
6
3
1. Cut-out
2. Indicator Lamp Green
3. Thermostat
4. Indicator Lamp Red
5. Heating Element