Responded to no-heat call for furnace that stopped working after transformer installation the previous day. Diagnosed tripped limit switch which was reset. Replaced nozzle and bled fuel line to restore proper operation. Verified furnace is now cycling correctly from thermostat and producing heat.
Responded to a first call service request to address ignition issues on an oil furnace. Diagnosed faulty ignition transformer, sourced replacement from shop, and installed new component. Properly reconnected all wiring and verified system operation through multiple test cycles. Equipment now functioning normally with proper flame ignition.
Diagnosed oil furnace failure in non-heating condition. Located Honeywell R8184M primary control module in lockout state. Reset module without success. Upon inspection of oil flow, nozzle, electrodes, and transformer, determined transformer to be malfunctioning. Placed order for replacement transformer to restore heating capability.
Performed routine furnace maintenance on approximately 20-year-old system featuring a Whirlwind high performance blower. Found and replaced dirty air filter, ensuring proper airflow through the system. Inspected blower motor assembly and ductwork, confirming all components in working order with no visible damage.
Completed comprehensive tune-up service on customer's oil furnace (8-12, over 10 years old), including replacement of oil filter, gaskets, and nozzle with .65 80°B nozzle. System inspection covered transformer, ignition, control box, wiring, blower, Beckett motor, sensors, electronic air filter, combustion air, and venting; purged air from fuel line and verified normal operation.
Performed furnace tune-up service, identifying rust buildup on burners and orifice. Adjusted gas valve pressure from 4.7 to 3.5 WC, inspected heat exchanger (no cracks or damage found), and detected elevated carbon monoxide levels over 100 ppm. Recommended installation of CO detectors on multiple floors for safety.
