Question about Whirlwind FH-778 Air Conditioner

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No air flow from duct on forced air unit

This is a combined unit of heat and central air( powered by natural Gas)

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If there is no air coming through all of ducts, there are several things to consider. If you turn your thermostat to fan on, does air come out? If so you may have a switching|thermostat problem. May need to change out, not really hard you just have to turn off electric mark wires as you remove and turn back on. If nothing changed, make sure the circuit breaker has tripped, sometimes its hard to tell so flip it all the way off then back on. Now try to turn on again. If it comes on you need to find out why it's tripping the breaker, merely resetting it can pose a danger for the future. Professionally servicing the unit is important to the longevity of the unit. Now if you find out that unit is coming on but no air is coming out, it could well be that a duct has blown free and is spilling into attic or crawl space. Sometimes the unit forms an ice block in the evaporative area of the unit. In this case it would need quite some time off to thaw. Also the fan motor may be burned out. In that case you would hear part of the unit working with no output. These are a few of the most common problems with this condition.Most of which needs to be addressed by a Tech

Posted on Jul 15, 2009

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