Справочник Пользователя для Nordyne Single Package Heat Pump R-410A

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of snow and ice on the heat transfer coil. 
This is normal, and the unit will periodically 
defrost itself. During the defrost cycle, the 
outdoor fan will stop, and the compressor 
will continue to run and heat the outdoor coil, 
causing the snow and ice to melt. After the 
snow and ice have melted, some steam may 
rise from the outdoor unit as the warm coil 
causes some melted frost to evaporate.
TO OPERATE YOUR 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.
TO SHUT OFF YOUR HEAT PUMP —
Set the thermostat system switch to OFF and 
the thermostat fan switch to AUTO. (See Figure 
1)
 The system will not operate, regardless of the 
thermostat temperature selector(s) setting.
TO OPERATE THE INDOOR 
BLOWER CONTINUOUSLY —
Set the thermostat fan switch to ON (See Figure 
1)
. The indoor blower will start immediately, and 
will run continually until the fan switch is reset 
to AUTO.
The continuous indoor blower operation can be 
obtained with the thermostat system switch set 
in any position, including OFF.
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.
TO MAINTAIN YOUR HEAT PUMP —
 CAUTION:
Be certain the electrical power to 
the outdoor unit and the furnace/air 
handler is disconnected before 
doing the following recommended 
maintenance.
1. Regularly:
a.  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. Inspect the fi lter 
monthly.
b.  Remove any leaves and grass clippings from 
the coil in the outdoor unit, being careful 
not to damage the aluminum fi ns. 
c.  Check for any obstruction such as twigs, 
sticks, etc.
 CAUTION:
Do not over-oil, or oil motors not 
factory-equipped with oil tubes. The 
compressor is hermetically “sealed” 
and does not require lubrication.
2.  Before Calling a Service Technician, Be 
Certain:
a.  The unit thermostat is properly set — see 
“To Operate Your Heat Pump for Cooling” 
and “To Operate Your Heat Pump for 
Heating.”
b.  The unit disconnect fuses are in good 
condition, and the electrical power to the 
unit is turned on.
Read Your Warranty
Please read the separate warranty document 
completely. It contains valuable information 
about your system.