Nortek E4EB Series - Unit Maintenance; Furnace Filter; Coil Filters; Blower Compartment

4
UNIT MAINTENANCE
WARNING:
      
performing any maintenance or service on the
system. Failure to comply may result in personal
injury or death.
CAUTION:

control panel. DO NOT OPEN.
NOTE: All servicing of this heating appliance other than
the normal maintenance described in this section must
be done by authorized trained service personnel. Do
not attempt any servicing which requires opening of the
control panels.
• Propermaintenanceismostimportanttoachievethe
best performance from the appliance and should be
performed frequently at the beginning of each heating
season.
• Keeptheareasuroundingtheunitclean.Keeptheunit
clear of obstructions.
USER INFORMATION
Furnace Filter
WARNING:
Never operate the furnace without a filter in place.
       
up on internal components, resulting in loss of

• E4furnacesaresuppliedwithasingleairlterwhen
shipped from the factory. It is recommended that the
filter be cleaned or replaced monthly. Newly built or
recently renovated homes may require more frequent
changing until the construction dust has minimized.
Filter sizes shown in Table 5 (page 18) are available
at most local retailers. Inspect filters frequently and
replace when necessary with filter of same dimensional
size
• Filtersdesignedtoremovesmallerparticlessuchas
pollen, may require additional maintenance.
Coil Filters
If a cooling coil is installed on your unit, the furnace filter
is not used. Remove coil filters, wash, and allow to dry.
Re-install coil filters to their original positions.

Dirt and lint can create excessive loads on the motor
resulting in higher than normal operating temperatures and
shortened service life. Vacuum or wipe clean the interior
of furnace cabinet. Clean all lint and dust from around the
furnace. It is recommended that the blower compartment
be cleaned of dirt or lint that may have accumulated in
the compartment or on the blower and motor as part of
regular maintenance.

If the unit fails to operate, check the following:
• Checkthethermostatsetting.Makesurethesystem
mode and temperature settings are correct.
• Checktheelectricalpanelfortrippedcircuitbreakers.
• Checktheltersfordustaccumulation.
• Check the unit and make sure it is clean and not
covered with grass or leaves.
• Ifthe items abovedon’tresolveyourproblems,then
call your nearest service technician. Please specify
the complete model and serial numbers shown on the
furnace data label for all warranty service and when
ordering replacement parts or optional equipment.
Refer to the replacement parts list provided with the
furnace for part numbers.
Figure 1. Digital Thermostat
Fan
Mode
Temperature
Selector
System
Mode