How do I fill my cartridge?
The best way to refill the cartridge is to submerge it in a bowl of distilled water for 4 minutes. When time's up, take it out and let it stand on the counter another minute. Then turn it over the sink and let any loose water drain out. Dry off the top of the cartridge and put it back together. There must be no loose water visible in the holes.		      
             
      Why does my XL or XL Plus run continuously?
There are only a few things that cause this problem. Most often, this is a water issue.

If there is any loose water in the cartridge, the water blocks the air flow and the unit thinks it's empty. It cannot draw the moisture from the cartridge and into your humidor. That would cause the low % and the unit to constantly run. If this is the case, please refill the cartridge according to the instructions here.

Another reason the unit may run continuously is if the little plastic valves that cover two of the holes under the control top are "stuck". An easy way to check that is to remove the top, hold it over your head, look underneath and blow on the underside of the control top to see if the clear plastic valves move. If they do not move then it is blocking the flow of moisture into the unit. Use light pressure to unstick the valve using a q-tip with rubbing alcohol and then use the q-tip to clean the plastic as well as the hole that it covers. These valves must open when the unit is running to draw moisture and when the unit is in sleep mode, they close to prevent passive evaporation into the humidor.

If your humidor is new or hasn’t been used for a while, it may need to be seasoned. If the wood is dry, the unit runs and the moisture is going into the wood. The humidity will drop until it's fully seasoned.

If all of the above don't fit, then the only other reason this symptom happens is if there is a poor seal or leak somewhere in the humidor. A very easy leak test is to take your cigars out briefly and burn a piece of incense on a little dish and close the lid. You cannot see water vapor, however you can see smoke escape. If that's the case you need to address that problem before you can go any further. 		     
             
      I just filled a cartridge and the unit is running continuously or it is still asking for water (H2O). Why?
If there is any loose water in the cartridge, the water blocks the air flow and the unit thinks it's empty. It cannot draw the moisture from the cartridge into your humidor. That would cause the low humidity and the unit to constantly run. If this is the case, please refill the cartridge according to the instructions here.		      
             
      Why does the Unit read HHH or LLL?
This usually this happens when the control top feels too much moisture or humidity. If you have recently filled the water cartridge, please remove the top and let it air dry for a few hours. After that, give it a helping hand using a blow dryer. Of course, you don't want to melt the plastic so don't hold it too close and preferably use it on a “cool” setting. Then leave it sit awhile again before you hook it up. Then, follow the refilling directions very and you should have no future trouble.		      
             
      I just changed the batteries and the unit still doesn’t go on. What should I do?
Check that the ribbon wire from the battery pack is pushed all the way into the unit. Try pulling it out and then putting it back in. If the connection is good and it is tight, please check the unit on AC Power. f the unit is working as it should, please try a fresh set of batteries as sometimes they have been sitting on the shelf for a long time and are not strong enough to power the unit. If this doesn’t eliminate the problem, please contact our office for further assistance. 		     
             
     

What does the code C16, C18 mean?
These codes are the program number of the chip inside the control top. The codes will always show when ever the unit is first hooked up, or disconnected & reconnected, or if there is a power interruption. Ordinarily, it will disappear after approximately 30 seconds. If you are using the unit on batteries are experiencing the code staying lit and not going off, that means the batteries are low. You many not have caught the LO indication to tell you to change the batteries. They are weak and the unit failed. Since the batteries were not totally dead, the unit tried to come back on, however didn't have enough strength. Replace the batteries and when you reconnect you will again see the code appear, however this time it should go out after 30 seconds or less.