A.O. Smith 300 Series Instruction Manual page 63

Possible Causes - Check/Repair
Confirm the water heater is full of water.
•
Confirm the powered anode wire connections are tight
•
and free of debris or moisture (i.e. rust, solder, metal pipe
shavings).
Confirm proper electrical ground to the water heater.
•
Inspect powered anode, clean/replace as needed.
•
NOTE: This Fault only applies to models with powered (non-
•
sacrificial) anodes.
Confirm the anode rod is not bent and shorting to the
•
tank.
Confirm the powered anode is free of contamination
•
between the anode top and surrounding metal (i.e.
solder, loctite, WD40).
Confirm proper electrical ground to the water heater.
•
Inspect powered anode, clean/replace as needed.
•
NOTE: This Fault only applies to models with powered (non-
•
sacrificial) anodes.
Confirm that the lower probe cable is plugged into the
•
CCB and the lower probe connector.
Measure resistance of probe to check for an open or
•
shorted circuit.
Inspect lower probe cable for damage.
•
Inspect the lower probe. Replace as needed.
•
Fault Messages.
Displayed Fault/Alert Message
0 days 0 hr 0 min ago
No water detected by Powered
Anode.
The control indicates a problem
with the anode protection. By
ACCEPT
Anode Shorted
0 days 0 hrs 0 mins ago
The Powered Anode is shorted to
earth ground or the tank.
The control indicates a problem
with the anode
Lower Temp Probe Open
0 days 0 hrs 0 mins ago
The indicated temperature probe
may be shorted or open.
Check connector and resistance
of probe.
63
No Water
Error Code: D6 -8
BACK
Error Code: CC -B
BACK
Error Code: 48-0
BACK
ADVANCED
ADVANCED
ADVANCED