I cannot find the part # for the time delay relay for the blower of my air handler (MOD #aepf3036163). Can anyone point me in the right direction? Thanks :)
Courtney

They are generic parts available at any AC parts store. DrTom4444

That's what I thought, but I got the run around when I called.

Let me ask you something: Why not wire the unit without the time delay? You do not need it at all. You can buy a time delay that is adjustable and wire it in series with the coil on the fan relay. It is a square black box with a knob on the front going from 8 seconds to 15 minutes. If it is a time delay to keep fan on longer it is a different matter. Sequencers are just relays that work with a bi-metal strip with a heater that heat up and close the contact and then when power is removed they cool down and break the connection. They come stacked so that heat strips can be wired to come on gradually, but you can just use a contacter (2 pole) and wire the heat strips to work from it and the heater will work better. You don't get a high current load when they start like with a motor. A contacter will cost about $15 for a 20-30 amp load. I always use contacters when I can and all large commercial units use contacters because they are more reliable. DrTom4444

Well the fan is stuck on, even though the correct temp. has been reached. The only way to turn it off is to shut the breaker off.

Then the relay is bad. I would install a fan relay instead of a sequencer and then it would be instant and more reliable. It is very easy to install as all of them are wired alike. Get a fan relay that has both normally closed and normally open contacts. Is your unit gas or electric? DrTom4444

It's electric. My husband thinks it has something to do with a capacitor (sp?)? Would that effect the fan's operation in the same manner? Btw- Thanks for your help, very informative :)

So, then I am looking for a 120v fan relay? What kind of shop would have this? All I can find are repair shops that want to send out a technician.

You need a fan relay with a 120 volt coil I would think because G and Common plug onto the coil and you wire the high and low (or medium) speeds to relay. Make sure you do it right or you will instantly burn up the fan motor. DrTom4444

Let me correct that: you need a fan relay with a 24 volt coil. DrTom4444

Great thanks! I have an electrician to put it in if I get confused, but from your directions and the other info I have read, seems pretty straight forward. Again, many thanks for your help!

It is very easy to replace. The low speed goes to the normally closed relay contact and the high speed goes to the normally open contacts and the power comes in on L2 when common on the motor comes in on L1. The thing is that in no way should both speeds be able to be energized at the same time. You need a relay with a 24 volt coil and normally closed and open contacts which is called a fan relay that all parts houses know what you need. DrTom4444