Responded to service call for a garage Big Maxx heater displaying a 2-blink error code. Diagnosed ignition failure despite normal startup sequence and gas call. Inspected control board and high voltage lead finding no cracks or damage. Performed maintenance including pressure switch clearing and flame sensor cleaning. Verified proper gas pressure. Determined spark igniter was faulty - would spark when unplugged but failed to function when properly connected. Resolved issue by replacing igniter.
Performed comprehensive furnace tune-up and safety check including gas leak inspection, proper grounding verification, pressure switch testing, and carbon monoxide measurement. Diagnosed and addressed rattling noise, tested flame igniter, gas valve solenoid, flame sensor, and blower motor capacitor. Verified and adjusted both stage 1 and stage 2 heating gas pressures using manometer. Cleared condensation line and confirmed proper system operation after service completion.
Responded to service call for AC/furnace system that was tripping fuses. Diagnosed two separate electrical issues: incorrectly wired low voltage connection at the saver switch box which was corrected, and severe arcing in the fuse box which presents a safety hazard. Informed landlord that the electrical arcing issue requires professional repair before system can be safely operated.
