Applicable Systems
Lochinvar Knight Boiler (SMART SYSTEM Control)
Symptoms
The boiler reports a control board fault. The boiler controller has detected an internal error.
Possible Causes
- Control board firmware error
- Control board hardware failure
- Memory or parameter corruption
Troubleshooting Steps
- Step 1: Check the control board diagnostic display
Error code is identified - Step 2: Restart the control board if a soft reset is available
Board restarts normally - Step 3: Contact service if the fault persists
Board is repaired or replaced
How to Reset
To reset: Resolve the control board fault, then press the reset button.
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Source: Lochinvar Boiler Manual, Lochinvar Corporation
Category: Boiler
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