Applicable Systems
Lochinvar Knight Boiler (SMART SYSTEM Control)
Symptoms
The boiler reports a low gas pressure alarm. The fuel gas pressure is below the minimum safe level.
Possible Causes
- Gas supply pressure regulator malfunction
- Gas supply line restriction
- Utility supply pressure drop
Troubleshooting Steps
- Step 1: Check the gas pressure at the boiler inlet
Pressure meets the minimum requirement - Step 2: Verify the gas pressure regulator
Regulator maintains correct pressure - Step 3: Inspect the gas supply line
Line is clear and unrestricted
How to Reset
To reset: Restore adequate gas pressure, then clear the alarm.
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Source: Lochinvar Boiler Manual, Lochinvar Corporation
Category: Boiler
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