Quote:
Originally Posted by Shaun 84 Targa
There is 230V across the top black and bottom black wires of the contactors.
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FYI - taking readings like this confuses the matter. If the contactors were going to a motor load you would likely read zero, but because it's going through a heating element you are getting 230v. Either way, it tells me that you're contactor is off. When it's on it will read zero - that can confuse a lot of people.
Anyway, it all sounds pretty normal. You do not have 24v contactors, they are 120v.
-Jumper a wire to the "com 1" on the new controller to the black 120v power wire. I would just pigtail, which means 2 short wires, 1 going to the power and 1 the com 1, then splice via a wirenut to the main 120v black wire that has now been disconnected from the controller power.
-the blue wire goes to terminal 3 "no" on the new controller.
Should do it. Is there a manual override on the controller? I turn off the power, in your case the 230v, which should be a seperate breaker from the 120v control circuit. Is it? Sometimes it's not. Either way, try to manual override to test if the contacors are closing. They should audibly click. If 230v power is still on, after contactor "clicks", test load side by putting one test lead on the lowest terminal (indicated "load" on my drawing) and the other lead to the white wire on the contactor - should get 120v. If 230v power is off, set meter to continuity and read "l2" to "load" top to bottom on the contactor terminals - should beep or read near zero. Repeat for "l2" and "l3". All loads should read 120v if 230v (confusing I know) is on or all readings should be zero across terminals if 230v is off.
If there is no manual overide you need to program the controller and simly turn it on and set temp to high or "on'. Again, you do not need the 230v on to test the system, only the heater elements. Once you know that the controller and contactors work, the rest of the system can be addressed.
Once this is all working, you need to make sure the temp sensor is working properly. Run the machine and check temp in dryer to make sure it isn't simply turning on and staying on, heating up too much - - -
FIRE.
PROVISOS - THIS INFORMATION IS MEANT FOR INFORMATIONAL PURPOSES ONLY. I STRONGLY RECOMMEND THAT A LICENSED ELECTRICIAN PERFORM THIS WORK. I CAN NOT GUARANTEE THAT THE INFORMATION I HAVE GIVEN YOU IS ACCURATE FOR YOUR SPECIFIC APPLICATION, NOR DO I ACCEPT RESPONSIBILITY FOR FAILURE, CATASTROPHIC OR OTHERWISE.
Have a nice day
