York Heat Pump YHE48

Dirt accumulation on the outdoor coils or other parts in the air circuit

Use a brush, vacuum cleaner attachment, or other suitable means to clean

The outdoor fan motor bearings are permanently lubricated and do not require periodic oiling

If the coil needs to be cleaned, it should be washed with Calgon Coilclean (mix one part Coilclean to seven parts water). Allow solution to remain on coil for 30 minutes before rinsing with clean water. Solution should not be permitted to come in contact with painted surfaces

Refer to the furnace or air handler instructions for filter and blower motor maintenance

The indoor coil and drain pan should be inspected and cleaned regularly to prevent odors and assure proper drainage

CAUTION: It is unlawful to knowingly vent, release or discharge refrigerant into the open air during repair, service, maintenance or the final disposal of this unit

Take care not to slug the compressor

The factory charge in the outdoor unit includes enough charge for the unit, 15 ft (4.6 m) of refrigerant piping, and the smallest indoor coil/air handler match-up

Some indoor coil/air handler matches may require additional charge

Compressor damage will occur if system is improperly charged

On new system installations, charge system per tabular data sheet for the matched coil and follow guidelines in this instruction

Set the indoor cooling thermostat to the OFF position

Close the line power disconnect to the unit

IMPORTANT: An attempt to start the compressor without at least 8 hours of crankcase heat will damage the compressor

With power to unit and thermostat in cooling position

In the cooling cycle, discharge gas is pumped to the outdoor coil which is the condenser. The indoor coil is the evaporator.

If the fan switch is in ON position, a circuit is made through the blower relay to provide continuous blower operation

With the fan switch in AUTO position, a circuit is made from the thermostat cooling contact through the blower relay to provide blower operation