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Need wiring diag. for coleman 3500A816 heater

Wiring was all bad and had to re place sequencer 3115-3571

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: Coleman Patio Heater wiring

This must be a top secret heater design. Coleman is dwfinately of no help. The whites go to the ignitors or the output of the spark generator. The black is generaly a ground. Good luck.

Posted on Jun 01, 2009


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Turns on & off..but, no heat. electric furnace Is there a RESET button on a Nordyne electric furnace?

Does the fan run normally? Or does it run all the time? If the fan operation is normal the problem may be a bad heat sequencers(relays) or the heat strip itself could be defective. Kill the high voltage grab a meter and disconnect the wires from the heat strip and ohm out the winding. If it's open then that's a problem. If it has a value ( probably low that's ok) then they should be good. Plug all wires back in. Move to the the heat sequencers look for any burnt wires. The low voltage should be blue and white wires maybe brown (second stage normally). This is the part that requires live testing of the system do not attempt if u are not familiar or comfortable with high careful. With all wire plugged back in and the panels off turn on the high voltage. With the meter check for low voltage across the heat sequencers to should read 24+ volts across the blue and white. This would indicate a on switch. if on then check for the lead that come from the high voltage to the heat sequencers red wire usually. This wire is hot always. Check between the chassis and this lead for 120 vac. If u have the switch on and high voltage present there should be high voltage on the opposite terminal check with meter. In no voltage the sequencer is bad. Hope this helps. Oh if no low voltage check tstat wire (white) and then check the tstat for correct programming if digital.. you might do that step first btw

Dec 30, 2016 | Heating & Cooling

1 Answer

I have already changed the heat sequencer&limit switches still no power to the sequencer and I'm getting 37voits @ thermostat

37 volts is way to much. Verify your transformer is set to proper voltage, 208 or 240. Then verify 24-27 volts on r terminal. Wire nut red green and white at stat to bypass tstat, then check low voltage to sequencer. If its anything other than 27 you have a bad wire or possibly a bad board. Not sure how your power gets to sequencer. Make sure you are testing sequencer on each side of coil, power and common, not power to cabinet. May have issue in common wire. Or try both P&C OR P TO cabinet

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Dec 16, 2016 | Heating & Cooling

1 Answer

Replaced a goodman sequencer and burnt wires it come on but will not control by the thermostat will not turn off

so its off . then comes on, an stays stuck on,
verify the 32v line is off pull that connector off the sequencer
if stays on then bad sequencer.
see this vid
HVAC Electric heat kit strips shown

Jan 12, 2015 | Goodman Heating & Cooling

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The sequencer contacts on the emergency heat is stuck on and will need to be replaced. Look at the numbers on the base of the sequencer and buy replacement. Turn all power off and replace leads one by one to new sequencer. I remove the base plate screw on the old sequencer and screw the new sequencer in place. Change wire by wire. Be aware to check the spade connectors are tight on the new positions. Most new spade terminals are thinner than older and the spade connector female side needs to fit snug. If necessary the female side can be squeezed with a plier until it installs snug. Renew any connectors that are burned or badly corroded. I would recommend calling a professional air conditioning tech if you have the least bit of hesitation to working on the equiptment.
Hope this helps.

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In heat mode but heat strips don't come on and the air handler fan dose not turn off

Maybe a bad sequencer.unplugged wire from sequencer and see it unit shut off .Sequencer is typically a relay

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Intertherm moble home furnace My heat strips came on one night while my a/c was running. We awoke to 101* temps. I removed the orange...

Sounds like a bad sequencer (the thing you unplugged the wire from probalbly). It will have 24vac supplied to the heating element in the sequencer and most likely 240vac being passed by the sequencer to the heat strips. This parts are not very expensive and can be purchased at a heating and air supply or a mobile home supply company. You can turn off the power and use an ohmmeter to figure out which one is bad. There may be only one or there may be 2 or 3. Let me know what you find.

Oct 25, 2010 | Heating & Cooling

1 Answer

Phkj036 auxilliary heat does not produce heat in cold weather. It just blows cold air.

You have to be sure you are getting 24vac to the white wire from the thermostat. Put thermostat up more than 5 or 6 degrees higher than the room temperature and then check at the unit to see if you have 24v from W to C. If you have 15 or 20kw of heat, you should also have 24v on the brown or W2 to C. If you do not, and you do have them wired at the thermostat, there is a problem with the stat. Either it is not set up in the advanced parameters for aux heat, or it is just bad. If you do have 24 on W and or W2, then you have to check the sequencers in the HK heat kit. Use an amp clamp to see if any of them are actually pulling amps. Then, check to see if you are getting power to the sequencers...that would be 24v between the blue and white on sequencer 1 and between brown and white if you have a second sequencer. If you do and the elements are not pulling amps, you have to determine if the sequencer is closing or if the element, thermal limit or fuse link is bad.

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1 Answer

Need help hooking the right colored prong wires onto my sequencer

There should be a wire diagram on the back side of the panel you took off to get to the sequencer

Nov 13, 2008 | Heating & Cooling

3 Answers

Intertherm heater

You should have 24vac at the 2 lowest terminals 1 on each side of the sequencer with a call for heat.( that is the control voltage,the terminals are usually double spade brass in color) If you have the control voltage after about 30-120 seconds the sequencer should close.The voltage reading across the sequencer should go from 230vac to 0 volts when the sequencer closes.If you have control voltage and 230vac on each side of the sequencer then the sequencer is bad.It is beast if replacing the sequencer replace by moving 1 wire at a time from the old to the new.And ALWAYS make sure power is truned off.

Dec 28, 2007 | Heating & Cooling

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