Lennox Heat Pump XP17-030-230-01

Warning: This test requires a fully charged 9V battery and should be performed by trained personnel only.

Is the main (240 volt) power OFF to unit?

If main power is not OFF, turn it OFF before proceeding.

Both wires (brown and black) removed from the J2 terminal on the fan motor control (A177)?

Is the room thermostat in OFF position (unit in idle mode - no heating or cooling demands)?

If room thermostat is not in OFF position, turn it OFF before proceeding.

Is the main power (240 volt) ON to unit?

If main power is not ON, turn it ON before proceeding.

9 Volt battery connected to fan motor (B4) plugs as noted in picture below?

Use a thermocouple or thermistor electronic vacuum gauge that is calibrated in microns. Use an instrument capable of accurately measuring down to 50 microns.

Leak detector must be capable of sensing HFC refrigerant.

When using a high pressure gas such as dry nitrogen to pressurize a refrigeration or air conditioning system, use a regulator that can control the pressure down to 1 or 2 psig (6.9 to 13.8 kPa).

Refrigerant can be harmful if it is inhaled. Refrigerant must be used and recovered responsibly. Failure to follow this warning may result in personal injury or death.

Maintenance and service must be performed by a qualified installer or service agency.

Outdoor coil cleaned and inspected?

All connecting lines, joints and coils visually inspected for oil leaks?

All wiring checked for loose connections?

Voltage at unit (unit operating)

Drain holes in coil compartment base inspected and cleaned if necessary?

NOTE - If insufficient heating or cooling occurs, the unit should be gauged and refrigerant charge should be checked.

Sign off on the outdoor unit maintenance

Lennox blower motors are prelubricated and permanently sealed. No more lubrication is needed.

Adjust blower speed for cooling. Measure the pressure drop over the coil to determine the correct blower CFM.

Belt Drive Blowers - Check belt for wear and proper tension.

Check all wiring for loose connections.

Check for correct voltage at unit. (blower operating)

Check amp draw on blower motor.

Is the outdoor coil exposed to corrosive substances or substances that block airflow?

If yes, it may be necessary to flush the outdoor coil more frequently.

Outdoor Coil — The outdoor coil may be flushed with a water hose. Did you flush it?

Outdoor Coil (sea coast) - Moist air in ocean locations can carry salt, which is corrosive to most metal.

Is the unit located near the ocean?

If yes, units that are located near the ocean require frequent inspections and maintenance.

These inspections will determine the necessary need to wash the unit including the outdoor coil. Please note down the inspection details.

Sign off on the outdoor coil maintenance