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How do I reverse the primary leads on a furnace

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  • deton8 von Splosion Dec 20, 2016

    What kind of heater... make & model... ??
    Why would you want to?

    Having trouble even forming a picture of your HEATER... let alone your TROUBLE... and... there's absolutely no EXTRA CHARGE for a reasonably detailed question (which would OBVIOUSLY help get you a decent answer. Soooo

    HOW about you give us a decent shot at being able to help??

    Either REPOST a less cryptic question or EDIT this on into a better one ...

    Happy Holidaze

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1 Answer

Furnace wont always turn on


make sure u have a new fiering nozzel it need to be changed every year, if good check and clean you cad cell, if still problems replace oil primary

Dec 23, 2015 | Heating & Cooling

1 Answer

Furnace problems


On - OK
1 Blink - Ignition failure. Check Gas flow, gas pressure, gas valve, flame sensor.
2 Blinks - Closed pressure switch. Check pressure switch (stuck in closed position).
3 Blinks - Pressure switch - failre to close. Check venter, pressure switch, vent blockage.
4 Blinks - Open limit switch. Main limit or aux limit are open. (My comment - Means overheating in chamber. Often result of blocked intake air. Bad filter. In my case, plastic wrap had been sucked into the intake. )
6 Blinks - False flame sensed. Check sticking gas valve.
Rapid continuous blinking - Incorrect twinning, incorrect primary polarity. Reverse transformer secondary leads, reverse primary wires.

Closed pressure switch can be from dirty combustion vents, bad chamber pressure - like missing screws, maladjusted gas pressure, failing pressure switch, loose hoses, moisture in the hoses or fan blades The switch need to be closed to ge the unit to work

Jan 23, 2008 | Goodman GMS90703BXA Heater

1 Answer

Heater broke, my Amtrol water heater expansion 80 gal tank, takes hot water from the oil fired furnace, and keeps it hot, However, the tank is set at 140 degrees, but the water coming out if the hot wter...


Hiliary
sounds like the primary coil in side is cracked and is mixing hot water.. with the cold water in tank need to check and replace as necessary

Sep 15, 2013 | Amtrol Water Heaters

1 Answer

Blower comes on ,no flame most of the time,but when flame comes on it only lasts for a few minutes then stops. light flashes 4 times,i have replaced primary limeter to no avail.?


Your sensor is dirty. The sensor is the little rod that sticks in to the flame. It is just a little bigger around than a pencil lead and has one wire connected to it. It will be mounted just a few inches from the ignitor glow coil.
Turn power off to furnace
Take the sensor off
DO NOT wash it.
Take emory cloth or very light sand paper and lightly brush the steel rod of the sensor
You can also use a fine wire brush.
Put it back together and fire the furnace up again, chances are you've fixed your problem

May 28, 2011 | Goodman Heating & Cooling

1 Answer

Transformer died, got a Packard Universal PF42440 for Heil furnac


Look at the tranformer. It should tell you which wires are the primary side and which are the secondary side. It may have more than 2 wires on the primary so it can be used for more than 1 voltage. Now depending on what voltage the a/c uses find the wires in the a/c with that voltage on them (110v or 220v) and connect one of those 2 to the lead for that voltage on the primary and the other to the common on the primary. Next the secondary side should have 2 wires, probably yellow and blue but maybe not. I don't know the color of the wires in your a/c but one leg of the primary usually connects to a red wire and the other to a blue wire that probably come from a ciruit board or thermostat. Make sure you do not connect 110/220 to the wires for the low voltage side. If this doesn't help let me know what color the wires in your unit are and we can go from there.

Jun 03, 2010 | Haier Heating & Cooling

2 Answers

Hi, I have a Janitrol GMPN060 natural


HI Check you air filter in clean , jump out the pressure switch see if it starts are the fan motors clean also check out the fan control hope this helps

Feb 12, 2010 | Heating & Cooling

2 Answers

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Switch the leads and also make sure that you have a good ground.

Mar 30, 2009 | Goodman Heating & Cooling

2 Answers

Furnace wont start when thermostat sends signal


by restart button you mean reset i believe,its located on top of oil burner and says only push one time .if thats the button your pushing it is the reset button or retry for oil burner if you are pushing this there is a problem with burner

Jan 04, 2009 | Honeywell Electronic Programmable...

1 Answer

A carrier furnace


check the relay
the primary should have a low resistance
there should be a distinct click when 24 volts is applied to the primary
the secondary should be conductive when the primary is energized (contactors can corrode)
not a solution something to check

Oct 02, 2008 | Heating & Cooling

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