HEATIT Z-TRM3 Temp Setpoint not working

Setup, Configuration and Use Beginners
81

Hate to wade into an old thread.

Don’t really know what “this” means in this context. Probably should open a new thread.

On quick review, the device (Z-TRM3) uses a V3 version report of the Thermostat_Setpoint CC, but the binding only supports V1 & V2. I do not see that changing in the near future. However, by Silabs specifications the device should be backward compatible with V1 and V2, so I’m guessing the HEATIT firmware update mentioned above fixes that. Also I couldn’t see (on my quick look) how adding a decimal works, but hey, don’t argue with success :wink:.

Anyway, assuming the first post is correct in that parameter 9 works (parameter 22 in the case of the Z-TRM6), another workaround is to create an endpoint (i.e. channel) for that parameter in the Configuration CC in the ZW device DB. You would have to deal with a Number item 10x larger and not a Number:Temperature, but it should work.

82

This=Use thermostat setpoint byte size and precision from capabilities report · Issue #1708 · openhab/org.openhab.binding.zwave · GitHub

Why don’t you see V3 happening? Already waited quite some time…

Chris said he just hadn’t had the time yet. :smiling_face:

83

As an alternative to waiting, if anyone wants to test using the parameter (9 or 22) as a channel for an item to set the heating setpoint (ECO could be added later), I marked up a couple of XMLs with that functionality that can be added to your ZWave jar.
Z-TRM3
ztrm3_0_0.xml (20.0 KB)
Z-TRM-6
trm6_0_0.xml (28.3 KB)

The procedure is here. The files are located in /OH-INF/thing/thermofloor/

Just an idea…

84

Thanks for providing this.
Will try it out when I find the time …

1 Like
85

Hi guys. I have some openHAB 4.0.2 with the Z-Wave binding and an Aeotec Z-Stick 5 USB on a Raspberry PI 4 with 4GB RAM, which works fine with all the devices… except several Z-TRM3. :face_with_spiral_eyes:

I am not sure here if the issue should have been solved in openHAB 4.0.2 or not.

I noticed som decimal story, but I am not able to see this anywhere.

Z-TRM3
Z-TRM3776×515 10.5 KB

Thanks a lot for your time. :slightly_smiling_face:

86

Hi,
In my world the decimal story goes like this:
TRM3 setpoint values must be decimal and the decimal value must range from 1-9 NOT 0. Nor can it be 00 (integer).
So, your Setpoint value should read 24.1.
Yes strange, but works for me.
Bjorn

87

Thank you, @satman, for sharing the hint to add decimal digits higher than 1. That works in that way, that openhab now sets the new value for the setpoint (and not jumps back, like it does when sending without that addition) …

… but my problem is, that my thermostat (Z-TRM6) does not receive the new value or at least does not switch to the new value.

Did you also notice such a behaviour and have a further hint for me to get this working?

I debugged it (see: 2024-03-16 17:57:29.429 [DEBUG] [nal.protocol.ZWaveTransactionManager] - Transac - Pastebin.com) but I did not find an exception or something like that:

zwave
zwave1521×1340 456 KB

Thank you very much in advance for your help!

88

Nico,
I am not using TRM6 so can’t help there.

I remember that TRM3 Setpoint Items were defined default as Number:temperature, which I understood to be a character string. I therefore defined my Setpoint Items as Number only.

Clarification: TRM3 Setpoints accept all decimal values x.1 to x.9 but not x.0. My experience.

Take care,
Bjorn

89

From the Debug everything looks good and timely. There is a “SET” and a subsequent “GET” (actually 2) that confirms the SET.Is this a new device that has never worked or one that worked before and stopped? Is the MODE on HEAT? Have you checked all the parameters to make sure the setpoint is looking at the right temperature sensor (floor or internal) and any offsets, etc.?

90

Thanks a lot Bjørn for your reply. The issue I have here is that I do not have/see any field where I can change the value… :roll_eyes:

91

You have to set the value with a rule, a widget, a sitemap item or via Karaf console

[root@homeserver ~]# ssh -p 8101 openhab@localhost
Password authentication
Password: DEFAULT PWD is habopen

                           _   _     _     ____  
   ___   ___   ___   ___  | | | |   / \   | __ ) 
  / _ \ / _ \ / _ \ / _ \ | |_| |  / _ \  |  _ \ 
 | (_) | (_) |  __/| | | ||  _  | / ___ \ | |_) )
  \___/|  __/ \___/|_| |_||_| |_|/_/   \_\|____/ 
       |_|       4.2.0.M2 - Milestone Build

Use '<tab>' for a list of available commands
and '[cmd] --help' for help on a specific command.
To exit, use '<ctrl-d>' or 'logout'.

openhab> openhab:status zWaveToiletSetpointHeating
18.2 °C
openhab> openhab:send zWaveToiletSetpointHeating 18.1
Command has been sent successfully.
openhab> openhab:status zWaveToiletSetpointHeating
18.1 °C
openhab> shell:logout
1 Like
92

Got it to work with a script and a rule. :grinning: Thanks a lot HaKuna. :slight_smile: