E302CRITICAL

Low Water Cutoff Error (Lochinvar)

Lochinvar boiler low water cutoff sensor has detected insufficient water level.

What This Error Code Means

The boiler water level is too low for safe operation, triggering a safety shutdown.

Common Causes

  • System water leak
  • Automatic fill valve malfunction
  • Low water cutoff probe fouled
  • Air purged from system without refill
  • Expansion tank waterlogged

Affected Brands

Lochinvar

How ROMA Heating Fixes This

  • Check for system water leaks
  • Verify automatic fill valve operation
  • Clean low water cutoff probe
  • Repressurize the system
  • Repair leaks and verify water level

24/7 Emergency Service

Available nights, weekends, and holidays. Fast 1-2 hour response.

Licensed Technicians

TSBC Gas License LGA0202903. Fully insured and WCB covered.

Same-Day Service

We diagnose and fix error code issues quickly.

Seeing Error Code E302?

Call now — our technicians can diagnose and fix it today

Call 778-909-5731