Nordyne Outdoor Heat Pump Two Stage Split System R-410A - Manual (Page 5)

5
SYSTEM MAINTENANCE
CAUTION:
Shut off all electrical power to the unit
before performing any maintenance or
service on the system. Failure to comply
may result in personal injury or death.
Proper maintenance is most important to achieve
the best performance from the appliance and
should be performed by a qualifi ed service
technician at least once a year. Follow the
maintenance schedule and the instructions below
for years of safe, trouble free operation.
Regular Cleaning
• Clean or replace the indoor air fi lter at the
start of each heating and cooling season,
and when an accumulation of dust and dirt
is visible on the air fi lter.
• Remove any leaves and grass clippings from
the coil in the outdoor unit, being careful not
to damage the aluminum fi ns.
• Check for obstructions, such as twigs, sticks,
etc.
TROUBLESHOOTING
If the unit fails to operate, check the following:
• The thermostat is properly set. See Cooling
Operation for air conditioning or Heating
Operation for furnace or air handler.
• The unit disconnect fuses are in good condition
and the electrical power to the unit is turned
on.
Operating the Heat Pump for Automatic
Cooling and Heating
1. Set the thermostat system switch to AUTO
and the thermostat fan switch to AUTO. See
Figure 1.
Note: Thermostats will vary. Some models will
not include the AUTO mode, and others will have
the AUTO in place of the HEAT and COOL, and
some will include all three.
2. Set the thermostat temperature to the desired
heating and cooling temperature level(s). The
outdoor unit and the indoor blower will then
cycle on and off in either the heating or cooling
mode of operation as required to automatically
maintain the indoor temperature within the
desired limits.
Operating the Indoor Blower Continuously
The continuous indoor blower operation is
typically used to circulate the indoor air to
equalize a temperature unbalance due to a sun
load, cooking, or fi replace operation.
Set the thermostat fan mode to ON (Figure 1). The
indoor blower starts immediately, and will run
continually until the fan mode is reset to AUTO.
The continuous indoor blower operation can be
obtained with the thermostat system mode set
in any position, including OFF.
Shutting the Heat Pump Off
Change the thermostat’s system mode to OFF
and the fan mode to AUTO. See Figure 1.
NOTE: The system will not operate, regardless
of the temperature selector setting.
and the unit will defrost itself. This unit features
Adaptive Demand Defrost that monitors ambient
and coil temperatures to regulate the defrost
function accordingly.
At the beginning of the defrost cycle, both the
outdoor condenser fan and compressor will
turn off. After approximately 30 seconds, the
compressor will turn on and begin to heat the
outdoor coil causing the ice and snow to melt.
NOTE: While the ice and snow is melting, some
steam may rise from the outdoor unit as the warm
coil causes the melting frost to evaporate. When
defrost is completed, the outdoor fan motor will
start, and the compressor will turn off again. In
approximately 30 seconds the compressor will
start up again and continue normal operation.
WARRANTY INFORMATION
A warranty certificate with full details is
included with the heat pump. Carefully review
these responsibilities with your dealer or
service company. The manufacturer will not be
responsible for any costs found necessary to
correct problems due to improper setup, improper
installation, adjustments, improper operating
procedure on the part of the user, etc. Some
specifi c examples of service calls which are not
included in the limited warranty are:
• Correcting wiring problems in the electrical
circuit supplying the heat pump.
• Resetting circuit breakers or other switches.
• Adjusting or calibrating of thermostat.
USER INFORMATION