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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

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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.
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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

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How to replace voltage regulater

Disconnect the battery.
Unplug the alternator lead going into the upper front of the primary cover.
Disconnect the reguator wire from the main circuit breaker.
Unbolt and remove regulator.
Reverse for installation.

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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...

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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

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2 Answers

Hi, I have a Janitrol GMPN060 natural

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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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