L53 wet bulb temp not going up

[Pratrooper]

Hello all.  I am new to the site and still pretty new to drying wood. I have searched the site and can not find the answer to my question/ concern.

I have a nyle L53 and I am drying 8/4 walnut. I loaded the kiln 6 days ago and started the kiln at 100/ 85.
The issue is the kiln and wood core has been up to temp (103) for 4 days now and the wet bulb temp has not gone over 76.
This wood MC is between 30-45 So it has water to give up.
Wet bulb wick is brand new.

I feel like I should have hit the WB set point by now or at least see some moisture or condensation in the kiln. Am I just being impatient

Any input is appreciated.

[WDH]

Do you have water coming out the drain hose?  It is a good idea to monitor and measure your drain water.   That can tell you a lot about what is going on in the kiln.  

[Pratrooper]

No no water coming out of the drain. The wet bulb temp is set to 85 and is never getting to 85 to command the compressor to turn on.
I changed the set points to 100db/ 70 ( actual readings = 103 / 75.5) and started getting water from the drain. I am going to leave the kiln at these set points for a hour and measure the water output. 

I still do not understand how my wet bulb was never getting above 76 with a fresh load of wood @ 40% MC. 

[YellowHammer]

Any time you have an issue with the WB and DB temps, always check the sensors first.  simply place the wet sock on the other sensor.  Then the Wb sensor should read what the DB was, and the DB should read what the WB was.

At that point, its good too get an independent measuring device, such as an ElCheapo from Lowes or Walmart Wireless RH and Temp monitor.

Assuming those measurements match, and that the moisture levels in the wood are correct then its a good bet that you have a leak in the kiln , either through the door seals, the penetrations, or the vents.  Since a kiln has a pressure side and a suction side, any leak to the outside is amplified, and makes a big difference.  Also, is the interior of the kiln waterproofed? If not, it's sucking moisture out of the air and wetting itself. 

[Pratrooper]

Yellow hammer.  Thank you, I will check those things. I have not had this issue on any of my other loads, could the extreme cold weather outside right now be playing a part in the problem. This is my first winter with the kiln and the weather just went into the single digits.

During my 1 hour test with the settings @ 100 / 75 I collected 8 oz of water from the drain. 
WB still reading 76.8

[Pratrooper]

The inside of the kiln is not waterproofed, it is plywood flooring and foam board insulation on the walls and roof. All of the seams are caulked with silicone. 

[customsawyer]

Judging by your handle we've been in some similar places. I don't have a WB DB mine is based on a old timer system. I'm willing to bet that since your kiln isn't waterproof that is going to be your problem. I keep a barometer that measures temp and humidity in my kiln. Mine happened to go out today and I mentioned to a friend that it was like trying to drive down the interstate with your eyes closed. The more information and knowledge you have about what is going on in your kiln the better off you're going to be.