for Lewis Center, OH
Scheduled maintenance cooling tune up on a Carrier air conditioner completed. I visually inspected the furnace. Checked voltage and amps. I inspected the evaporator coil. I checked the temperature difference across the coil. Checked refrigerant charge, voltages and amps. I rinsed the condenser coils with water. Cycled and monitored the system. Operating normally at this time.
Was shown to furnace. Unit was giving a code for open limit switch. Used meter to verify tripped safety. Checked condition of 16x25x1 filter. Filter was completely plugged. Temporarily removed filter t measured temp rise across heat exchanger. Did notice inducer assembly operating loudly,but not enough to cause a fault for the pressure switch.
Performed Our Special Tune-Up & Safety Checkout On a Lennox Gas Furnace To Keep Furnace Running Efficiently For The Fall/Winter Season.