A.O. Smith BTH 400 - Page 61

61
FAULT AND ALERT MESSAGES (CONT)
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POSSIBLE CAUSES - CHECK/REPAIR DISPLAYED FAULT/ALERT MESSAGE
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ADVANCEDBACK
0 days 0 hr 0 min ago
Error Code: A7-1201
Blocked Air Intake
Restriction in air intake.
Check intake pipe and
termination for blockage.
Press the Advanced button for
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ADVANCEDBACK
0 days 0 hr 0 min ago
Error Code: A5- 401
High Temp Limit Exceeded
Energy Cut Off has shut off
water heater due to high tank
temperature.
Press the Advanced button for
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ADVANCEDBACKACCEPT
0 days 0 hr 0 min ago
Error Code: D6-8
No Water
No water detected by Powered
Anode.
The control indicates a problem
with the anode protection. By