Furnace User Manual 2019

8
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High e󰀩ciency lters are available in both electronic and
non-electronic types. These lters can do a better job of
catching small airborne particles. Contact your dealer for
further information.
If using a Media or Electronic Air Cleaner, follow the
directions provided with the air cleaner for proper lter
removal, cleaning, and replacement.
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Disposable lters must be replaced with a lter or lters
of the same size as that which is removed. Filters must
comply with UL900 or CAN/ULC-S111 Standards.
Permanent lters must be cleaned, washed, and dried
as specied by the lter manufacturer. If it becomes
necessary to replace a permanent lter, it must be replaced
with a lter or lters of the same size as that which is
removed. Filters must comply with UL900 or CAN/
ULC-S111 Standards.
When reinstalling lters, be careful to maintain correct
airow direction.
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If your furnace is not operating or is performing improperly,
take time to perform the following checks before
requesting service. A couple of simple checks may allow
you to avoid a service call. If the following steps do
not resolve the problem, contact a qualied servicer for
further troubleshooting and/or repairs. Do not attempt
troubleshooting beyond that which is outlined in the
following bullet points. Do not attempt repairs yourself.
• Check the blower compartment sight glass. If LED
is ashing, record the number of ashes seen in
sequence, shutdown your unit as outlined in the
“Furnace Start-up” section and contact a qualied
servicer for further troubleshooting and/or repairs.
Refer to Installation Instructions for code identication.
If not ashing, continue with checks.
• Check thermostat for proper operation. Verify that
it is set on HEAT and that temperature (above room
temperature) setting is appropriate.
• Check the electrical panel for tripped circuit breakers
or failed fuses. Reset the circuit breakers or replace
fuses as necessary.
• Check for dirty lter(s). This in the most common
cause of improper furnace operation. Check your
lter(s) at least once a month and replace or clean
lters as necessary.
• Check for blocked return air or supply air grilles
throughout your home. Grilles may be blocked by
furniture, drapery, clothes, carpeting, etc. Clear any
blockage.
• Check intake and vent terminations on high e󰀩ciency
furnaces to make sure they are not blocked.