HIGHError Code
E110: Flow Sensor Issue (Boiler)Emergency Diagnosis & Repair
Boiler flow sensor not detecting sufficient water flow for safe operation.
What This Error Code Means
Adequate water circulation cannot be confirmed, preventing burner operation.
Common Causes
Flow sensor failed
Circulator pump not running
System valve closed
Low water pressure
Air lock in system
Affected Brands
NavienViessmannWeil-McLainBuderusLochinvar
How ROMA Heating Fixes This Error Code
Test flow sensor operation
Check circulator pump
Ensure all valves open
Check and repressurize system
Bleed air from system
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