Repaired a Hayward H250 pool heater. Diagnosed the issue as a faulty ignition control module and a clogged burner assembly. Replaced the ignition control module to restore proper ignition sequence. Cleaned the burner assembly to ensure efficient gas combustion. Checked gas pressure and flow to confirm it met manufacturer specifications. Tested the heater's operation, verifying the thermostat and safety controls function correctly. The pool heater is now operating efficiently, providing reliable heating.
