Question about Heating & Cooling
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Posted on Jan 02, 2017
SOURCE: furnace won't kick on
Downstream of your fan discharge there is a little plastic assy. most likely that will have a pickup tube and a piece of vinyl or latex tubing attached. First check to make sure that the pick up tube and/or tubing does not have a restriction. If it is clean use an ohm meter to read resistance across the switch to verify it is operating.
Posted on Nov 15, 2008
what you need to do is take and inspect the hose that goes to the pressure switch and make sure that it is not dry rotted. if it is and the combustion blower is running then firsat try to cut the hose down and slip on a better piece of rubber. If not then replace the hose,
Posted on Dec 25, 2008
If you know where the high limit switch is you can always cut the two wires and wire them together causing the limit to close. But what you have to watch out for is why the high limit is not closing. That means in your return air either you have a dirty return air duct, dirty filter, or you don't have all your registors open to allow the heat to escape the heat exchanger. Just watch over riding the system. The high limit switch should either be on or behind the blower, in the middle of the system right under the heat exchanger. any other questions about hvac just ask.
Posted on Jan 17, 2009
SOURCE: I have an amana dms
Open pressure switch is when your vent motor comes on it has to get a certain vacuum pressure or it won't ignite furnace. There should be some little black hoses connected to vent motor and maybe into heat exchanger, running to these pressure switches. Pull hose off one end and make sure hoses are not kinked or some times if hoses have sag in them they can fill with water. Other causes are if venting is obstructed or pressure switch is defective, especially if it got moisture in it.
Posted on Jan 26, 2011
Testimonial: "did the trick thanks"
That means that the exhaust blower is not working properly or the flue piping is plugged...
verify that you have air coming out the exhaust pipe...
Then check the blower that it is working properly...
If this all checks out then replace the pressure switch... they do go bad...
Posted on Sep 10, 2011
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