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I have Electro Mate Modle LU 2021A. When I plug in low voltage transformer, green lite on DFC module does not lite up and unit does not activate with thermostat. Fuse on DFC mod looks good.

Posted by Kenneth Wurm on

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farfield

Farley Redfield

  • 462 Answers

SOURCE: CARRIER AIR CONDITIONER/HEAT PUMP PROBLEM WOULD

what I have always been told is if your 24 volt side burns out check the high volt side if the hi volt side burns out check the low volt side.

A quick way if the primary side is burningout due to a problem with the low volt side:
1 MArk all the thermostat wires at the indoor unit
2 Disconnect them at the indoor unit.
3 Check main line voltage before proceeding (A 208 volt is not considered 220V and 240v Is not considered 208V> In these circumstances the voltage may have changed with the power company replacing a transformer and now you need to change the main power input lines at your control transformer for the correct operating voltage). If okj then proceed:

4 If you have an amp meter attach it to one of the lines going to the transformer.
5 Apply main power and listen for hum, note if smell starts again and if so problem has to be in board or main incoming voltage too high or too low. Amp draw should be less than 3 amps.
6 If your to this point and still havent found any trouble in the above as of yet, Connect the wire marked "C" together. Then just touch the thermostat wires one at a time to the places where they go on the indoor unit and watch the amp meter. If you donmt see the meter jump the circut is probably ok but leave them disconnected until you touch all of them to the correct place or wire. Here is a possible problem I ahve seen a thermostat wireing problem if the wires are stripped too far and a "whisker" of the wire sticks out and allowes one of the other wires to cross short out. In this case just cut off the excess wire or bend it over out of the way asnd continue with the test. You can always cut it off later after the tests. If you see the meter jump up and stay up and /or blowes the fuse the wire that you used and it blew is where to consentrate.
7 No wiring problem found means that you could have a relay or contactor not pulling in properly.
and this will cause the amp draw to go way over the transformers power out put or VA rating.
8 Inspect the thermostat wiring for the "whisker" I mentioned above.
9 If you have done this to the end of the thermostat wires and your main incomming voltage is correctly wired in on the transformer andf your relays and contactors are pulling in evenly and not delaying excessively your problem should be fixed.

If this helps you please rate me as high as you can and thank you for using fixya.

Posted on Apr 25, 2009

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protek480

Craig Butler

  • 1730 Answers

SOURCE: Looking for a manual for a hampton bay low voltage

It sounds like you may have a loose connection somewhere in the circuit. Check the output connections. Then see if there is a splice somewhere ...

If you need further help, I’m available over the phone at https://www.6ya.com/expert/craig_3fa289bf857b1a3c

Posted on Jul 08, 2009

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R. S

  • 51 Answers

SOURCE: Intertherm Air Conditioner S3BA-042KA compressor and fan not working (has power)

It sounds like that unit is connected to a "power saving load controller" device from the power company. The power company can turn your unit on & off with a radio signal. If you manually activated contactor and unit ran. I would bet that the power company's device or the wiring connecting it is where the problem lies. Call the power company and have them check their device. If they tell you that the device has been tested remotely and is working fine. Explain to them that you can activate your unit manually and it works fine. They should not charge you to come out. Those "load controller devices" have a pretty good longevity record.

Posted on Jul 11, 2012

Testimonial: "Thank you. I was not aware that the power company had that ability. I will give them a call and ask about a test of their unit. Last year they sent me a postcard asking if I wanted to participate in their energy saving program. I declined but was not aware that they still had a device attached which could do it. I really hate surprises."

Gene Haynes

  • 5391 Answers

SOURCE: TDC low voltage transformer model DA 150 12 W reset button trips

There is a short circuit.
Copy following link to identify possible problem and download manual
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Posted on Jul 17, 2012

John McDowell

  • 8 Answers

SOURCE: My low voltage landscape lights are constantly going on and off

One way to troubleshoot that is to take out some of your fixture bulbs on the system and be sure you are counting bulb wattages that are installed .turn on the transformer and if your outage problem goes away , you know you have too many light fixtures for the transformer output wattage and will need a larger transformer or install smaller wattage bulbs where you can so you are under the rated wattage for the transformer . I have also seen where a light fixture is rated for say a 50 watt bulb but when it was installed at first it was installed with a 20 watt bulb and the transformer held the load , but as the bulbs burn out , they get replaced one at a time with 50 watt bulbs , which eventually takes the lighting wattage over the wattage output of the transformer and it begins to fail . Hope that helps . John

Posted on Sep 27, 2012

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1 Answer

Voltage supply to the control unit too low (undervoltage) seems to be a common proble, but I seem to see no suggested solution


so you are not getting 24??? What control unit??? be sure you have the right transformer, also be sure you are using either the right terminals or the right wires for the primary side. also check the transformer with no wires on the secondary side, this will eliminate transformer and point you closer to solution.

If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79

Oct 05, 2017 | Heating & Cooling

1 Answer

I have a new heater with diferant terminals from the old one so not sure how to atach the wires


There is no need to rewire the internal of the heater!
Just bring in the electrical supply to the heater, it can be either 120 or 240 volts.
If the heater you have is like the picture associated with your post, then all then have to do is change the supplied plug from 240 to 120. It comes pre set for 240. That plug is inside the cabinet.

If any other brand, then you need to change the wires at the transformer of the heater. All heaters need to be supplied with primary voltage: 120 or 240. Then the control system is supplied with secondary voltage out of the transformer. The secondary voltage is no more than 28 volts. and these wires are normally colored as blue or yellow.

Secondary power is already wired within the heater. NO need to change where they are. You will only need to deal with the Primary wiring.

There are many varieties of transformers that transform high primary voltage to a low secondary voltage of 28 volts. and these transformers have many wires: primary & secondary.
I will try to make this easy to understand.

If you have a Gas Heater Transformer with these colors:
  • Red
  • Black
  • White
  • Green
Or...
  • Red
  • White with Red Stripe
  • Black
  • White with Black Stripe
  • Green
These are Dual Voltage Transformers, you can bring in either 120 Volts or 240 Volts

If you bring in only 120 Volts...
1st example:
The Red wire will not be used! Hot wire to the Black, and the Neutral/Common, to the white wire. Green to ground.

2nd example:
Connect the Red wire with the White with Red Stripe together and connect these to the incoming Neutral/Common wire, normally White.
Connect the Black Wire with the White with Black Stripe to your incoming Hot Wire, which is normally Black.
Green to ground

If you bring in 240 Volts...
1st example.
1 Hot wire to the Red, the Other Hot wire to the Black, and White wire is not used. Green to ground

2nd Example:
Wire nut the two Striped wires together. then one incoming Hot wire to the Black, the other incoming Hot wire to Red.
Green to ground

Or This is only a Low voltage - 120 Volts Only
  • Black
  • White
  • Green
Or either any of these combinations...
  • 2 Blacks w/Green
  • 2 Reds w/Green
  • 1 Black, 1 Red w/green
This type will only be a high voltage, 240 volts only
Picture below is what a transformer looks like and it is where your incoming supply wires go. The smaller leads with the spade connections will go to a specific location & is the 'Secondary" .

Good Luck



25568369-di2jpn2pb5nzkrgf0hzbmyq5-3-0.jpg

Mar 14, 2015 | Pool & Spa

1 Answer

Resetting a tripped kitchler low voltage transformer


Model number is not known.
I did not know that Kitchler transformers have a circuit breaker.
Usually they have an override switch.
Did you set the timer to override, what does your product manual say?
Is the transformer humming? Kitchler transformer are supposedly non-audible, but there should be some indicating sound. The humming sound indicates the transformer is working.
Does the unit have photoeye? Cover photoeye with black tape.
Test outlet with circuit analyzer.
Check outlet voltage: if you have 120Volt then output is 10% or 12Volts. If you have reduced voltage, then output is still 10% but might be lower than needed to operate bulbs.
Plug timer into different outlet.
Test output terminals with low voltage tester.
Did you have power outage or nearby lightning strike? Transformers are not protected from surge.
Suggest you contact kitchler.
Kitchler.com website is useless
888-412-4877
7711 E Pleasant Valley Rd
PO Box 318010
Cleveland, OH 44131
Kitchler products are probably warranted through the seller.
Kitchler product manuals are almost non-existent.
Scan your product operating manual and parts list into .pdf format and post on web for others to access.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Aug 09, 2012 | Hardware & Accessories

1 Answer

My carrier 38gr has 30v on one transformer green lead (to CPCS pin 2) but only 14v on the other green lead (CPCS pin 10) does that mean the transformer is bad and wont allow contactor to operate?


there should be 24volts on the low voltage side have you checked the fuse on the board it might be blown if it is an older carrier unit and doesn't have a fuse then it is a bad transformer especially if your thermostat is not responding

Jul 28, 2012 | Carrier Heating & Cooling

1 Answer

Have a goodman central air unit, non heat pump. keeps smoking transformers, on the inside unit, replaced fan capacitor and transformer as the old transformer was smoked as well. But to no avail the new...


There is a short in the control wiring that needs to be tracked down. Ohm the wiring to the low voltage controls, ie thermostat wiring and thermostat. Try disconnecting the thermostat wires to rule out the problem in the control wiring to the thermostat or thermostat itself, then install a new transformer without connecting the thermostat wiring, jump the red and green wire at the unit low voltage connections to test blower, and then add yellow for compressor, should be no more than 3 amps on control side wiring with A/C on.
If the problems still exists without the thermostat wiring connected then there is a problem in the wiring in the unit or control board itself.

Aug 24, 2011 | Heating & Cooling

1 Answer

When turning on main switch light goes on but no other lights go on. This one has a light for low voltage, flame, ect. none of thode lights lite. Jet heater doesn't attempt to start either.


Is there a reset or an in line fuse ( a little glass fuse )? This is only indicating that you have power to the heater. If I were to guess I would say there is something between the high voltage and low voltage, usually manufacturers will put protection (a fuse ) on the low voltage side of your step down transformer. Remove the electrical cover after powering it down and trace the wires from the plug to the transformer looking for a reset or little glass fuse.

Dec 22, 2010 | All-Pro Kerosene Garage Shop Heaters - All...

2 Answers

Keep burning power conversion plug on PC board I am running unit at 230 volts I have change transformer also


You should first start with converting the unit to run on 115 VAC if you can. We had a unit that went thru three ignitors, 2 selector boards, two main boards and a transformer in one summer in part because the electronics in that model are sensitive to spikes and spikes on a 230 circuit are worse than the same spikes would be wired for 115. Jandy was the source for that recommendation, not us.

Anyway, consider changing the line voltage and thoroughly inspect your main board to be certain it is not damaged. Assuming the main PCB is ok your best bet with a new part should be low voltage. Since we converted the unit we were working on it has been trouble-free.

John

Oct 26, 2010 | Jandy Lite 2 Natural Gas Pilot Light...

1 Answer

Have a Ruud AC unit the problem I have after installing a new condenser fan motor when I throw the circuit breaker the unit will not turn on but when I push the contacts on the contactor in manualy the fan...


The contactor engages from low voltage power from the thermostat as does the outside condensing unit. You may have blown the low voltage transformer or have a loose thermostat wire. Check line voltage(220 volts) to the transformer. Check load voltage(24 volts) from the transformer. If no voltage out,replace the transformer. If you have voltage out(24) check the thermostat wires and the thermostat. If you have a digital thermostat there is a 5 minute delay in the thermostat after power is restored before it activates.

Oct 08, 2009 | Ruud Central System Air Conditioner

1 Answer

Wiring transformer on ac


pls on the transformer is writing each wire color to the corresponding voltage you have 2wires low voltage 24 volts(secondary) and other 2 wires power ( primary) also if you follow the uni wiring you will find 3 vwires main power voltage may be 110 or 220 or 380 and two others low voltage commonly 24 volts after identification you can connect each wire to the other .

May 04, 2009 | Heating & Cooling

5 Answers

Viking stove top gas burners


I have a VGR36 6 burner. All the spark ignitors stopped clicking after a major boilover spill. Liquid got into the spark module compartment and caused a short. The paper wiring diagram under the spark module protective cover was burned from the short. I had a Harper 6542 non-reignition spark module but the replacement part is now a Tytronics PA020041 Spark Module. I bought kit #000511-000 from allvikingparts.com which includes the module, a black jumper wire, a green ground wire and an instruction sheet.

It's not difficult to replace the spark module but the 2 screws holding down the module toward the back of the stove are not visable and accessible. I used a thumbwheel rachet with a long philips screw driver bit (for cordless drills) to remove and replace the screws. The wiring was simple. The 2 power wires need to be wired to the correct polarity on the module, but the remaining 4 ignition wires can be wired to any of the 4 terminals on the new module. All the wires have plug in connectors and no cutting and splicing is necessary, but I had to cut and splice because one wire shorted and the insulation was burned from the major spill on my stove.

Nov 05, 2007 | Kitchen Ranges

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