Question about Humidifiers
Furnace is set to heat and fan is set to auto but it only blows cold air continuously. furnace is not coming on
Posted by Anonymous on
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Posted on Jan 02, 2017
You need to determine whether the problem is in the solenoid or in the furnace electronics. You could put a voltmeter on the solenoid connection to see if the furnace is still holding the solenoid open after the blower stops. This will tell you whether it is the solenoid or not.
Posted on Feb 19, 2007
When your unit is on normal the outside unit works and the inside only the fan runs. your heat pump does not remove any humidity when it operates so the installation cotractor did not wire it to operate then. you can change the wiring on the humidifier to operate all the time by wiring it to the fan (g) terminal then it should work just turn it all the way to the lowest humidity when you are in cooling mode.
Posted on Jan 11, 2009
How old is the filter? Filters should be replaced every year. If its a new filter check to make sure the little hose is inside the hole at the tom of the filter.
Posted on Jan 19, 2009
It sounds like the humidifier may be improperly wired.
It's hard to solve without checking the wiring, but it seems like the humidistat is wired so that as the dial is advanced, it incorrectly turns on the fan, or furnace, or both. The contacts of the humidistat should be wired so that they turn on the solenoid only. Also, the power to the humidistat, to turn on the solenoid, should come on only when the fan is on.
Hope this helps!
Posted on Jan 28, 2009
There is a devise called a current sensing relay (a little black box that hangs on a blower motor wire that senses current from that wire) If you have such a devise it should hang from the white (common) wire. Loop the wire through twice.
Posted on Mar 10, 2009
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