Справочник Пользователя для Nordyne R-410A

5

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.

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.

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.

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.