Ultra 20 Point Inspection

Thermostat – Check for loose connections that may cause unit short cycling. If possible, check or calibrate temperature readings.

Split Temperatures – Measure temp drop as air passes through the evaporator coil. The ideal temperature drop should be approximately 17-20 degrees.

Air Filter – Inspect and advise on existing air filter by looking for debris that may be restricting airflow in the return and try to inspect the face of indoor coil.

Blower Wheel – Check for proper operation and ensure proper balance. Check to make sure blower wheel is clean and free of build-up.

Air Ducts – Make sure air ducts are clean and free of growth. Look for signs that may indicate leaks in ducts. (Cold air in attic or insulation in ducts).

Disconnect Box – Make sure all connections are tight. Look for signs of metal fatigue or signs of overheating (bluish-green).

Fuses – Check fuse condition. If the fuse is swollen or bad, check disconnect box for loose connection or leaks that may be allowing water inside.

Contractors – Check switch for worn or pitted points. Check part for possible discoloration or burnt wires.

Start Kit | Relays | Transformers – Inspect all parts for loose wiring or worn-out parts, and ensure parts are securely mounted.

Run Capacitors – Check microfarads on all caps. Recommend replacement if they are not within 10%. Check for oil leaks or voltage drop.

Compressor – Check to start amp draw along with running amps. Compare to unit ratings. Look for burnt wires at compressor terminal.

Refrigerant – Check system pressures to ensure proper charge on unit. If the system needs more than 2 lbs DO NOT add refrigerant until leak is found and repaired.

Condenser Motor – Check amp draw against max ratings. If needed, oil motor. Check for loose bearings or damaged fan blades.

Condenser Coil – Check temperature split on coil. Should be approximately 30 degrees. Ensure coil is clean of debris and fins are not damaged.

Blower Motor – Check motor amperage and compare it to motor ratings. Oil motor if needed. Check to ensure of proper motor speed.

Evaporative Coil – Check and make sure both sides of the coil are clean. Dirty coils will cause poor system performance, early breakdown, as well as poor Indoor Air Quality.

Condensation Drain – Make sure drain is free of debris and bacteria growth. Check PVC for loose or cracked parts. Look for overflow signs (rust).

Plenum – Make sure plenum (elbow) is sealed correctly and that no air is escaping to the outside. 8 out of 10 elbows leak, usually underneath.

Insulation – Check the insulation by blower to make sure it can’t be sucked in. Check tubing on suction line. Worn insulation affects system efficiency.

Safety Controls – Check to make sure that the safety and high-pressure controls are functioning.

HEATING CHECK UP:

Thermostat – Check for loose connections that may cause unit short cycling. If possible, check or calibrate temperature readings.

Air Filter – Inspect and advise on existing air filter by looking for debris that may be restricting air flow in the return and try to inspect the face of indoor coil.

Blower Motor – Check motor amperage and compare it to motor ratings. Oil motor if needed. Check to ensure of proper motor speed.

Runs Capacitor – Check microfarads on all caps. Recommend replacement if it is not within 10%. Check for oil leaks or voltage drop.

Blower Wheel – Check for proper operation and ensure for proper balance. Check to make sure blower wheel is clean and free of build-up.

Carbon Monoxide – Test furnace and plenum with meter for any possible leaks. Test all supply registers with meter for any possible leaks.

Burners – Check for a solid blue flame. If the orange or yellow flame appears look for a cracked heat exchanger, dirty burners, or poor exhaust flow.

Heat Exchanger – Examine heat exchanger for cracks or signs of stress or fatigue. Shut down unit if you suspect that there may be a problem.

Gas Lines – Inspect all gas lines for possible leaks. Use soap and bubbles and check common known areas where leaks often do occur.

Temperature Rise – Determine changes in temperature between supply & return air. Check this with the allowable rise listed on the unit's rating plate.

Safety Controls – Check door safety switch sequence of safety operations. Also check all other auxiliary safety devices.

Indoor Coil – Check the indoor coil to make sure it is not restricting airflow. Check for possible leaks that may decrease systems performance.

Drafting – Ensure proper flame. Look for signs or rust or blockage. If signs exist, look to see if the flue needs to be cleaned or replaced.

Limit Switches & Fan Controls – Check limit control for proper cut-in & cut-out. Disconnect the power to the blower and test upper limit switch.

Pilot / Ignition Switch – Check for flame quality and roll out. Look for hard ignition or any sign of delayed ignition. Check warm-up time.

Duct Work – Check both the supply and return air ducts cleanliness. If in attic, check to see if any air ducts have collapsed or separated.

Heat Strips – Check sequences, fan continuity, safety controls, limit switches, and element connections. Check amperages throughout.

Crank Case Heater – Use amp probe to ensure the crank case heater is functioning. If it is not, oil may foam and reduce compressor viscosity.

Defrost Controls – Try to send the unit into defrost to check its function. Inform occupants of what they can expect during defrosting.

Split Temperatures – Take split temp to measure efficiency. Poor split temps indicate bad airflow.