Fault And Warning Conditions - Advanced Diagnostic Information - A.O. Smith Cyclone Xi Service Handbook

FAULT AND WARNING CONDITIONS – ADVANCED DIAGNOSTIC INFORMATION
This water heater control has the ability to monitor
almost all aspects of the water heater's operation. In
the event of an undesirable or unsafe condition that
occurs, the water heater control will detect this
condition and determine the appropriate action. The
water heater control will display the information on the
desktop in plain text that accurately describes the
condition and diagnostics information that can be used
to correct the issue.
There are two types of conditions that can occur
during operation. These are Warnings and Faults:
Warnings: This is a non-safety related condition that
the control has detected that may cause the water
heater to operate in a less than optimal condition, but
does not pose a safety concern.
NOTE: When these conditions occur, continued
heating cycles will continue and the heater will attempt
to regulate the water in the tank to the Operating Set
Point.
Example of a Warning:
A.O. Smith – Technical Training Department
CYCLONE Xi COMMERCIAL GAS WATER HEATER
BTH 120 thru 500 SERVICE HANDBOOK
Servicing should only be performed by a Qualified Service Agent
Faults: This is a safety related condition that has been
detected by the heater.
NOTE: When these conditions occur, the water heater
WILL NOT CONTINUE any further heating cycles and
the water will no longer be heated until the condition is
corrected and, in most cases, power has been cycled.
Example of a Fault:
Advanced Diagnostic Information
When a fault or warning has been declared, advanced
information can be found in the control. By pressing
the Advanced button, detailed information can be
found regarding diagnosing and resolving the problem.
WARNING: Usage of the Advanced information
requires ability equivalent to that of a licensed
tradesman in the field involved.
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