SOURCE: 1986 Weathermaker SX 150 series, model S85X060-CC-1
There are 4 -steps for full run time to kick in a furnace.. step-1, inducer fan runs & prove thru the air tube which closes a switch and tell the circuit board to go to step-2, the igniter lights the pilot & prove its lit by heating the thermocouple, which tells the circuit board to go to step-3, opens the gas valve to dump gas in, which will light from the pilot light, and prove by a flame sensor metal stick on the last burner , which heats up and tell the circuit board Saying, ok , I've got flame.. step-4. when the box heats up, it closes a switch and turn on the main fan...! (Some gas-valves has a brain -or circuit board on top of them and are real sensetive to moisture..)
SOURCE: I have problem with LG S186GH Air Conditioner
Hi, I looked up you're unit to see just what I already assumed it was, a split system, ductless,9kb.t.u. Ok, 1st go to the outdoor unit to see if it comes on when you turn your t-stat to heating, and be sure you lower the temp. enough to do this test. There maybe a time delay before it starts up, but not long,1-1/2 min. If it doesn't start up, we know that there is a problem.If not on, make sure you check for the power source, locate the breaker it may have tripped, or right at the unit there is a elect. box that should contain 2-fuses.They may be hidden from site under a shield you may have to remove. Check all of this only if this unit is not running. Reset breaker, or replace fuses if not running.If that was the problem and it was off, and now its on, you will have to watch it and if it continues to loose power, you have a problem in a componant as the compressor, condenser fan motor, open or shorted run cap, contactor Ect.You could have developed a freon leak, and it could be off on low pressure.If it is running, it still could be low on freon, reversing valve not changing over, many things can cause this Im afraid to say.The main thing to do or to start, would be to make sure that the outdoor unit is on, fan on, and compressor running if you listen at where the wiring and copper lines enter.You may need to call a tech if you check these things i have suggested and you have no luck. Please be safe and let me know, and we can go from there before you call anyone out.
Sincerely,
Shastalaker7
SOURCE: switched from manual to Honeywell
I will assume this is a central air conditioning system. From what you tell us about the symptoms a few things come to mind for you to check.
1. Change your thermostat and see if that cures your problem.
*The following steps requires the use of a multimeter and work around electricity, use due caution or call a professional.*
2. Check the contactor inside the outside unit while you have the thermostat calling for cool and see if it is pulled in or if it is stuck. If you are not comfortable around high amp electricity then please call a professional in your area to make these checks.
3. Check to see if the thermostat wires going to the outside unit are sending 24 to 28 volts to the unit. This will tell you if the problem is outside or inside the home. If there is no voltage there then check at your furnace to see if the t-stat is sending the power on the Y connection.
There is much more to check but this should get you going in the right direction and will locate the problem in most cases.
Hope this helps.
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