Troubleshooting - A.O. Smith EWJH 15 User Manual

Troubleshooting

Problem
• No display on wired
remote controller
• No hot water
• Water temperature
is too high
• Display, no hot water
• Piping connection
leaks
• Water leakage
from product
• Wired remote controller
displays error code "E0"
• Wired remote controller
displays error code "E1"
• Wired remote controller
displays error code "E3"
• Wired remote controller
displays error code "E4"
• Wired remote controller
displays error code "E5"
Possible Cause(s)
Heater is not plugged in
Thermal cutout trips
No power supply in power
socket on the wall
Control circuit or internal
wiring error
Electronics circuit damaged
Heating element(s)
breakdown or internal
wiring error
Connection not sealed
Leakage in tank or
other parts
Leakage of electricity
Temperature sensor circuit
short or open
Extra high temperature
Current leakage detection
circuit fault
Low voltage protection
(>100 V & <275 V)
13
Solution
Plug in the heater
Call Customer Care Centre
Check the power socket
Call Customer Care Centre
Call Customer Care Centre
Call Customer Care Centre
Re-connect piping, using tape
thread sealant.
Refer plumbing instructions on
page 9
Shut off power immediately
and Call Customer Care Centre
Call Customer Care Centre
Call Customer Care Centre
Call Customer Care Centre
Call Customer Care Centre
Use after voltage returns to
normal