HVAC IR Extender (Remotec ZXT 120) (2014)

Brian - Thanks a ton for taking this on. I just purchased and set up a ZXT-120 using your device type code, and it’s working beautifully with my Mitsubishi Mr. Slim unit. One question I have: I only use my Mr. Slim for cooling, nothing else. Can I modify the code to just remove the other modes (heating, drying, etc) so I’d be able to easily just toggle between “Off” and “Cooling”?

@Ultrathew, there are two things you can try. First, there may be a code for Mitsubishi that works for your Mr. Slim unit that only offers cooling. The second option is in the code, on line 179 is a list of modes… if you change it to:
["off", "cool"]
it should work like you want.

@bdahlem Thanks a bunch for adding this device type in smartthings. Its working great with my mitsubishi mr slim unit. The only problem I see is that the temperature sensor does not show any reading on my android devices, it works fine on iOS.

Any idea what might be the problem?

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Brian,

Just got my ZXT-120 going with your code. I cannot thank you enough. The only issue is the code I tracked down the set point reported on the app does not match the unit. It may be incorrect manufacturer code I am doing more investigating. I finally have control over my mini split thanks to you. Now if I can track down the perfect code I’ll be set.

Darren Bellouny

Hello, can somebody show me how to configure the ZXT-120 on SmartThings. I have added the device, but cannot enter the configure menu. Thanks

Can you be more specific, what is your issue ?
The “configure” button sends the zwave configuration.
The “Preferences” button opens the preferences dialog to change your preferences.

NOT: Preferences are broken right now. You can follow this thread to see when it might be fixed

Can you tell me what code you used for your Mr. Slim unit?

I did on other thread but in case someone else reads later I am using 176

I can’t get the code changed. Won’t stick.

You using my code ?

If so then a few things.

  1. unit should be in always listening mode. You need to configure this “BEFORE” you include it. So if not sure exclude it using ide (don’t just delete), then read manual to configure “Always Listening” mode and not FLIRS mode. In FLIRS mode the config gets missed if it isn’t listening and I had issue making it work.
  2. after setting parameters you have to hit “configure” to send the new values.

I also have a new version I am working on. It’s a little nicer interface, had fixed buttons for fan speed modes along with a report back display tiles.
I need a little more work on the fan buttons because they current turn on the unit. I want them to just set the mode and send the signal to the unit when cool, heat, etc is selected. So watch for new versions in near future. Here is the current modified version

It looks like this now.


First row is temp tile, battery tile, temp tile with name (I might move these lower)
Second row is Last Issued Mode, Last Fan Setting, Last Swing Setting
Third Row is Discreet Cool Button, Discreet Dry Button, Discreet Heat Button
Forth Row is Last Issued Cool Temp, Off button, Last Issued Heat Temp
Fifth Row is Discreet Fan Modes LOW,Med,High
Sixth Row is Auto Fan mode, swing on, swing off
Seventh heat temp, slider (slider bug doesn’t initialize told by ST this is fixed)
Eighth row is cool temp, slider (same bug)
Ninth row is last poll time, current config reported, offset reported
tenth refresh, configure, smartapps
eleventh preference,activity

Thanks Ron. That’s super helpful. I am using your latest code, but the unit was in the FLIRs mode. I’ve changed it. But I still can’t get the code to change.

Looks like you are correct.

New version isn’t setting it correctly or something.

I just tested changing the code and it will not work with new version but working with old.

strange because I didn’t change that.

I will try to fix this. Mean time switch to old version, change the config, then you can switch back or just stay on old version.

UPDATE: I fixed the new version…Sorry about that :frowning:

Get it here

Works great now! Thanks again.

Do I use the sliders to issue the heat and cooling? They work, but the last issued temps never change. they’re both on 75 and have been from the beginning.

The value to the left of the sliders is the current setting. However if that setting is issued to the zxt-120 then the unit will turn on. So the value is stored but not sent.
When you press “cool” or “heat” the setting is sent and the last issued value should update.

OK. Still seems to always show 75 for cool and heat. And the setting on the sliders gets ignored although the unit does turn on. Maybe the code for my Mr. Slim is different? Also, now my battery level shows 255%. It was down to about 75% this morning.

Not the code…Something is wrong with this device code.
I added the reported temp because the old code never really indicated what the zxt-120 was reporting so you know you issued the command but you don’t know if it worked.

However it seems either the zxt isn’t accepting the issue or my reporting code is wrong…

I am working on fixing this. This device code is very Beta at the moment :smile:

Update: I think it is fixed no. I need to test more but have to work on it later. Thanks for reporting issues.

It’s working better now. And the 255% battery thing was dead batteries.

Great, battery thing is interesting. I don’t run on batteries I use the USB plug. I will have to test one with just batteries and see what happening to cause 255. Hopefully I can recreate the issue.

Hi Ron,
I wanted to say thank you for all your work on this Device Type. I received two units in the mail today and was up and running in about 10mins with your code!

I am on batteries and managed to configure no problem in FLiRS mode. There is a bit of lag but it did work for me.

Sliding the temp bars doesn’t seem to do much for me at the moment - the temp to the left of the bar isn’t going low enough (stops at 24C when I want to get down to 18C!). Is that what I should use the temp offset for?

Also, if you have time, can you explain the discreet buttons? When the unit is off and I press COOL, the unit beeps twice (usual is only once when I use the remote). Is it cycling thru modes? I ask because if I turn it off when cooling and it cycles when I press COOL to turn on again, it will cycle past cool to HEAT :smiley: