All All All All - Goodman GAS-FIRED WARM AIR FURNACE User's Information Manual

When reinstalling filters, be careful to maintain correct airflow
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-
fied servicer for further troubleshooting and/or repairs. Do not
attempt troubleshooting beyond that which is outlined below.
Do not attempt repairs yourself.
• Check the blower compartment sight glass. If LED is flash-
ing, record the number of flashes seen in sequence, shut-
down your unit as outlined in the "Furnace Start-up" section
and contact a qualified servicer for further troubleshooting
and/or repairs. Refer to Installation Instructions for code
identification. If not flashing, 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 fuse or circuit breaker in furnace electrical circuit. Re-
place as necessary.
• Check to see that the manual gas shut-off valve external to
the furnace is in the ON position. If the valve is in the OFF
position, turn the gas ON following the start up procedures
outlined in the "Furnace Start-up" section.
• Check for dirty filter(s). This in the most common cause of
improper furnace operation. Replace or clean filters as nec-
essary.
• Check for blocked return air or supply air grilles throughout
you home. Grilles may be blocked by furniture, drapery,
clothes, carpeting, etc. Clear any blockage.
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