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The carriers are pretty much the same as others . And there shold be nothing going to the HSI until call is made.. to be honest Ive never seen that.. All I could think is its prob a fult in a ground...

Don't TRY TO FIRE WITHOUT THE PILOT ORIFACE!. sounds like it fell out when you had it apart there it has to be there.. if not the gas will just pour into the campartmet . Ingition and blast off.. the...

On the other side of your burners is a flame sensor take it our and clean it with some emory or light sand paper wipe it off good and replace it.. the unit should work fine after that . If its not...

If the blower won't come on it sounds like either a fan relay on the board or a burnt speed (at least) in the moter. When it heats up it causes the limit switch to trip. If the blower coms on with...

Does this unit have a intem pilot?. ( sparks and lights a regular looking pilot burner ,like one you would see on your water heater) I think it does if memory serves. It's a block with 3 wire...

First.. what kind of furnace?. 7? Id check your HSI ( hot surface ignitor ) there should be a sheet on the panel with a code key

Intertherm.. OH BOY lol.. yes they have a rep for that . Ive been a HVAC tech for 24 years they have a HIGH altitude pressure switch that works better ( not great . Ive found the best is to replace...

I believe the coil you have is for both heat and cooling.. one side is for chilled and other is for heated water . So if there overlaped (inside the box) that's what it is, if there side by side (...

It sounds like it's your PRESSURE SWITCH is sticking or there is a partial block in the hose from the inducer housing.. VERY common. And A lot easier than trying to rewire a board
Pull the two wires...

Yes there is reg maint. Check for oil ports on either end of the moter and clean and vacume it out. The TOP OF THE line filters ONLY catch the dust that happens to get to the filter not a lot in the...

Well your (and most syatems) run on 24 volts.. sounds like you might have a bad transformer and if it is working look if your getting less than 17 volts it is bad and needs to be replaced . With a...

Try to separate the cause... diconnect the t-stat wires first.. if it continues the problem is in the unit itself i.e. sequescer, circuit board,. if not,. it's going to be in the stat.. stuck...

If it does it in cycles check your filters for the limit switch (if thers no button it will auto reset and be a headache ) on most newer units the fan running and not firing is a fault indicator ...

Yes most definitely you do NOT have to have both with a split system... If you are not going to replace the ac unit at this time.. u need to disconnect the call wires to the outside unit ( if its...

You have two LOW voltage CALL wires on the side of the contactor.. seems like you are not getting a call signal from the indoor unit or you have a dog that has chewed or broken wires.. they normally...

I have a TRANE rooftop.. ycd150c3loba.. all paperwork and schem. Have weather worn off.. test mode works. Everything cycles.. how do I hook up the thermostat to the number only termanal board?. have...