Table Of Contents - A.O. Smith 110 Troubleshooting Manual

Table of
Contents
Troubleshooting Guide
1. SPECIFICATIONS..................................................................................................................3
2. INTRODUCTION..................................................................................................................4
3. NORMAL OPERATION........................................................................................................5
Activation................................................................................................................5
Operation................................................................................................................5
Shutdown................................................................................................................5
4. INSTALLATION.....................................................................................................................6
Venting....................................................................................................................6
Gas Line...................................................................................................................6
Water Line.............................................................................................................6
Power Supply..........................................................................................................6
5. TROUBLESHOOTING..........................................................................................................7
Preliminary Checklist............................................................................................7
General Problems..................................................................................................8
Error Codes...........................................................................................................
Procedures.............................................................................................................19
Verifying proper Dipswitch settings......................................................19
Draining the unit.......................................................................................21
Cleaning the filter.....................................................................................21
Checking for a Cross Connection............................................................21
Check for Reverse Connection................................................................21
Check gas supply pressure......................................................................
Purge the gas line of air..........................................................................
Adjusting manifold pressure...................................................................22
Resetting the computer board...............................................................
Checking the OHCF.................................................................................. 24
6. MAINTENANCE....................................................................................................................25
Rod Assembly.........................................................................................................25
Burner & Rod Assembly........................................................................................26
Heat Exchanger.....................................................................................................29
Flow Sensor.............................................................................................................31
Descaling the Unit..................................................................................................32
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Troubleshooting Guide
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