A.O. Smith CEWH-A1 Series, Руководство по установке

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Troubleshooting
Problem
Possible Cause
Solution
Indicator light off
No hot water
1) Heater is not switched on
2) Heater is power off
3) No power in power socket on the wall
4) Control circuit or internal wiring error
1) Rotate the adjusting knob
2) Turn on the heater power
3) Check the socket
4) Contact customer service
Indicator light off
Water temperature too high
1) High-limit trip
2) Thermostat faulty
1) Contact customer service
2) Contact customer service
Indicator light on, no hot
water
Heating element(s) breakdown or internal
wiring error
Contact customer service
Piping connection leaks
Connectaion not sealed
Re-connect piping, must
use tape thread sealant
Cover leaks Tank or parts leak
Shut off power immediately
and contact customer service
Figure VIII Wiring Diagram
CEWH-A1 Cylinder Electric Wall-Hung Water Heater CEWH-A1 Cylinder Electric Wall-Hung Water Heater
CEWH-A1
…
…
9
L N GND
Brown Blue
Yellow
green
High limit
Blue
Brown Thermostat
White
Indicator
light
N
L
Element