Rudd achiever serie. where do the 24 volt wires go to on the air handler.

Tandem batteries... is a fairly loose term to be dealing with on batteries... SIMPLY BECAUSE THEY ARE EXPLOSIVE.


TANDEM voltage
(assuming you were trying to achieve 24 volts with 2
12 volt batteries would NORMALLY be called serial...

Where as to increase AMPACITY ... called "parallel."


Rather than risk severe burn, blindness (end of life
experimenting with EXPLOSIVES...
You need to go back to your source for better information ...
or
Provide better information here... Pretty please

With the limited information you have given, i will give you some steps to take to isolate the problem. Since this is an interrmittent problem you will have to wait for the unit to shut down again.
When the fan will not come on when it should be on, follow these steps.

IMPORTANT: IF YOU ARE NOT EXPERIENCED WITH WORKING WITH HIGH AND LOW VOLTAGE WHILE ENERGIZED, DO NOT ATTEMPT TROUBLESHOOTING!

1. Turn the thermostat fan switch to "on"'.
2. Remove service panel and find thermostat wire connections to air handler.
3. You must determine if you have 24 volt power thru the thermostat and to the air handler on the fan conductor. The fan conductor should be green.
4. There should be a connection of this green wire from the thermostat to the fan wire in the air handler.
5. This connection will have a wire nut at the connection.
6. Remove the wire nut and check for 24 volts at this wire connection.
7. To do this you must have a multimeter and know how to use it.
8. Place one meter probe on the bare wire connection and the other probe against bare metal in the air handler cabinet. You should get 24 volts. If not then you have a thermostat problem.
9. If you have 24 volts then put the wire nut back on the connection and follow the wire to the fan relay.
10. Take a insulated screwdriver and tap on the insulated portion of the relay several times.
11. If the relay is stuck this should free it enough to make it work.
12. If the fan comes on when you tap on this relay then you need to replace the relay.

This is the simplest way i can tell you how to troubleshoot your problem with the limited information i have about your system.
I am assuming you are mechanically inclined and understand the terminology.
If not, then get a professional to do this repair.

John from one service man to another, most of the time I have seen that many transformers fail is when there is bare wires touching somewhere from the outdoor unit to the air handler. This cause a small short in the circuit. Usually its when there is a crawl space under the house or even when the wiring is up in the attic. I have seen birds, squirrels, dogs and even rats chew thru thermostat wire. Hope this helps you . Have you thought about putting a small 5 amp fuse in series with "C" on the thermostat?

IS your thermostat set to automatic on the fan switch? If so then you may have a stuck fan relay in the air handler. If it has an electronic control board the relay is on the board and the whole board would need replaced. If it is not a stuck relay then you could have a crossed wire from the thermostat to the air handle, usually the green wire from the t-stat, it could be crossed with the red wire that supplies 24 volts to the t-stat.

Your going to have trouble getting a diagram for that air handler. tell me what it is doing maybe I can help you out.

Assuming this is a standard unit the thermostat connections you will use: Y, R, G, W and possibly C.

Run two conductor thermostat wire to the condenser. The condenser will have two wires to connect. Connect the two conductors to the condenser wires and run them in to the air handler.

At the air handler, connect the two condenser wires to: Y (yellow) and C

Run 4 or 5 conductor thermostat wire from the air handler to the thermostat. At the thermostat, connect the yellow wire to Y, the white wire to W, the green wire to g, and the red wire to r.

At the air handler, connect the thermostat wires: White to w1, yellow to Y, green to G, and red to R

*Y will now be connected to the thermostat and the condenser
*If you have 5 conductor wire to the thermostat, connect the last wire (which is probably blue) to C
At the air handler, connect the last wire (blue) to C. This will enable you to have 24 volts at the thermostat in case the thermostat actually requires 24 volts to operate it.

R=hot
G=fan
Y=cool
W=heat

You need 24 volts going to the coil of the contactor. If you do not have 24 volts, you will need to trace the wiring back to see where you are losing it from. Try placing your voltmeter at C & Y coming from your air handler. If not, go to your air handler and test for 24 volts ac at C & Y coming from your thermostat. If you do not have 24 volts coming from your thermostat, there is either a problem with the thermostat or there is a problem with the wiring between the thermostat and the air handler. If you have 24 volts at the air handler coming from the thermostat but you do not have 24 volts at the outdoor unit coming from the air handler, then you have a problem with the wires between the air handler and the outdoor unit.

I hope you find this information to be very helpful to you moving forward. Please leave a rating. :-)

Take the front panel off the air handler and look for a heat element. You should notice controls and relays with larger wiring to it. It may not have any heat but you can add it.

If the pump was bad the switch is supposed to shut down the ac so the water damage won't occur. You most likely have a bad drain.

If you need further help, reach me via phone at https://www.6ya.com/expert/dan_73bbd84fe1d95b61

ok it unit is a central I'm suspecting a voltage transformer is defective you see these units need 24v to turn on certain components but if your air handler turns on, your getting 24v to the fan relay, the problem would be elsewhere. if your handy with a volt meter open the thermostat(if applicable) put the meter on ac volts and measure to see if there's 24v between the R and Y terminals

if so your cooling contactor is defective. (If you get 24 v and unit outside dosen't turn on) if there isn't some fuse on the air handler control board blew out.

you can e-mail me @ [email protected] if you need more info