Model 51: Gas Burner

DIAGNOSE THESE with OnWatch Burner Monitors

Model 51 faulty gas valves data sheet
Model 51 gas chattering TT or boiler control data sheet

Frozen regulators
Faulty power venter proof switches
Controllers with intermittent problems
Chattering thermostats or boiler controls
Faulty main gas valves
Faulty ignitors
Flame-out after ignition
Low line pressure
Flame sensor problems
Low voltage