No Anode Current - A.O. Smith DSE-5 Service Handbook

Fault & Alert Messages
DISPLAYED MESSAGE
CONDITION/INDICATES

"No Anode Current"

"Low Anode Protection"
"No Anode Voltage"
(Alert Condition)
The control system has detected one of three
potential problems with the powered anode rod (on
models so equipped) - see page 48.
Possible Causes:
No water or low water in tank
Water heater/CCB not properly grounded
Plug/socket/wiring connection problems
Powered anode rod/wiring shorted to ground
Heavy calcium/lime accumulation on anode
Defective powered anode rod
Servicing should only be performed by a Qualified Service Agent
TROUBLESHOOTING
• Ensure the water heater is full of water. Follow
the filling instructions in the maintenance sec-
tion of Instruction Manual that came with the
water heater.
• Ensure the water heater is properly grounded -
see grounding instructions in the Instruction
Manual that came with the water heater and
Grounding instructions on page 5 in this man-
ual.
• Ensure the CCB is properly grounded - see the
Checking Power And Ground To The CCB tests
on page 54. Ensure the ground wire leading
from pin 2 of the J2 plug on the CCB (page 50)
is securely connected to ground and the wire
was properly stripped and crimped in it's con-
nector.
• Check the J10 plug/socket connection at the
CCB ensure they are mating properly and pro-
viding good contact. See CCB illustration and
socket identification on pages 50 - 52.
• Check for pinched/broken/shorted wiring
between the Powered Anode Rod and the J10
plug/socket connection on the CCB - repair or
replace damaged wiring as necessary. See
CCB illustration and socket identification on
pages 50 - 52.
• Remove the powered anode and inspect for
damage and/or heavy calcium/lime accumula-
tion clean and/or replace anode as necessary -
see page 48.
• Call the toll free technical support phone num-
ber on the back cover of this manual for further
assistance if the problem has not been cor-
rected after performing the procedures outlined
here.
80
CHECK/REPAIR