Applicable Systems
Lochinvar Knight Boiler (SMART SYSTEM Control)
Symptoms
The boiler reports a scale buildup alarm. Excessive scale has been detected in the heat exchanger.
Possible Causes
- Water hardness causing scale precipitation
- Insufficient water treatment
- Low flow velocity allowing deposition
Troubleshooting Steps
- Step 1: Inspect the heat exchanger for scale
Scale level is acceptable - Step 2: Verify water treatment and softener operation
Water is properly treated - Step 3: Descale the heat exchanger if needed
Heat exchanger is clean
How to Reset
To reset: Descale and improve water treatment, then clear the alarm.
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Source: Lochinvar Boiler Manual, Lochinvar Corporation
Category: Boiler
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