Lochinvar Lochinvar Knight Boiler (SMART SYSTEM Control) Error Code L010

Lochinvar Boiler Major Valve

Model: Lochinvar Knight Boiler (SMART SYSTEM Control) | Code: L010

Applicable Systems
Lochinvar Knight Boiler (SMART SYSTEM Control)

Symptoms

The boiler reports a fill valve fault. The automatic fill or makeup water valve is not operating.

Possible Causes

  • Fill valve solenoid coil failure
  • Valve seat contaminated or worn
  • Fill valve pressure regulator misadjusted

Troubleshooting Steps

  1. Step 1: Test the fill valve solenoid coil
    Coil shows correct resistance
  2. Step 2: Inspect the valve seat
    Seat is clean and seals correctly
  3. Step 3: Verify the pressure regulator setting
    Setting maintains correct system pressure

How to Reset

To reset: Repair or replace the fill valve, then clear the alarm.

Related Lochinvar Fault Codes

Source: Lochinvar Boiler Manual, Lochinvar Corporation

Category: Boiler