Lochinvar SMART SYSTEM 502 - 2072 - Manual (Page 42)

3
Troubleshooting
42
FAULT DESCRIPTION CORRECTIVE ACTION
Watch Dog Error The main control board has detected an
internal fault.
• Cycle main power.
• Replace the main control board.
Write EEProm The main control board has detected an
internal fault.
• Cycle main power.
• Replace the main control board.
Program EEProm The main control board has detected an
internal fault.
• Cycle main power.
• Replace the main control board.
CRC Parameters
The main control board has detected an
internal fault.
• Cycle main power.
• Replace the main control board.
• Restore default parameters using the PC program.
No Error Stored The main control board has detected an
internal fault.
• Press RESET.
• Cycle main power.
• Replace the main control board.
Table 3E (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Operator Interface
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