Zwave thermostat Setting Time? And other issues

[theedudenator]

Can I set the time on my thermostats from ISY?

I have tried and I can't figure it out.

 

I also notice that at night my main house thermostat will switch from 65F to 70F.

No clue why.

 

Is there a way to log and track the heat/cool cycle of a thermostat?

[Amigo]

Good morning,

I have not seen a z-wave thermostat yet that exposes its time synch via z-wave, so I don't think that is currently possible.

 

As far as mysterious switching of setting either you have an ISY program or you have enabled a scheduling feature in the tstat to go into occupied mode or some other raised level mode. From my experience, it is best to disable all scheduling features of the Tstat if you want to control the settings via isy.

 

Unless your thermostat has status reporting, the only way to track the heat/cool is to run a query command as certain time intervals from an isy program.

 

cheers.

[paulbates]

You can use something like the below. I use it for a different brand of thermostat, but it should work for yours...You'll need to substitute the If clause for one that show when your zwave thermostat is calling the furnace for heat.

 

Heat and Cool Cycles. How many times did the unit cycle, how much runtime?

 

$V_HVAC_Cycles - The number of cycles the HVAC unit has run

$V_HVAC_Runtime - The total runtime

If
'HVAC / Family Room' Heat/Cool State is Heating 
Then
$V_HVAC_Cycles += 1
Repeat every 1 minute
   $V_HVAC_Runtime += 1

Else
- No Actions - (To add one, press 'Action')

If you are tracking daily, you'll also need a program to clear the variables at the end of day. For logging, you can add notifications to yourself with variable substitution before clearing the variables daily, eg an email that says "The furnace had xx cyles and a total runtime of XXX today"

 

Paul

[ISYhbsh01]

 

 

Unless your thermostat has status reporting, the only way to track the heat/cool is to run a query command as certain time intervals from an isy program.

I recently decided to start looking into getting a z-wave thermostat.

 

Did I understand you correctly that (some?) Z-wave thermostats do not report back their status to the ISY, and for the ISY to have the status the tstat has to be constantly polled?

[Amigo]

I recently decided to start looking into getting a z-wave thermostat.

 

Did I understand you correctly that (some?) Z-wave thermostats do not report back their status to the ISY, and for the ISY to have the status the tstat has to be constantly polled?

 

Good afternoon,

Yes, in my experience some z-wave thermostats only report back temperature changes, so if you want to know setpoints, or fan mode, fan status, system mode, etc. you have to query/poll the device.

I can confirm that the honeywell z-wave thermostat will report all status changes without a need to query.

cheers.

[fryfrog]

I have a program that runs once a week an syncs the time on my locks and thermostats... are you saying it might not be working? "Sync time" is just one of the options in a program for me for my locks and thermostats.0

 

 

Sync Time - [ID 0062][Parent 0001]
 
If
        On Sun
        Time is  4:00:00AM
 
Then
        Set 'Inside / Locks / Back Lock' Synchronize Clock
        Set 'Inside / Locks / Front Lock' Synchronize Clock
        Set 'Inside / Locks / Garage Lock' Synchronize Clock
        Set 'Inside / Locks / Laundry Lock' Synchronize Clock
        Set 'Inside / Downstairs / Thermostat' Synchronize Clock
        Set 'Inside / Upstairs / Thermostat' Synchronize Clock
 
Else
   - No Actions - (To add one, press 'Action')

[Amigo]

 

I have a program that runs once a week an syncs the time on my locks and thermostats... are you saying it might not be working? "Sync time" is just one of the options in a program for me for my locks and thermostats.0

Sync Time - [ID 0062][Parent 0001]
 
If
        On Sun
        Time is  4:00:00AM
 
Then
        Set 'Inside / Locks / Back Lock' Synchronize Clock
        Set 'Inside / Locks / Front Lock' Synchronize Clock
        Set 'Inside / Locks / Garage Lock' Synchronize Clock
        Set 'Inside / Locks / Laundry Lock' Synchronize Clock
        Set 'Inside / Downstairs / Thermostat' Synchronize Clock
        Set 'Inside / Upstairs / Thermostat' Synchronize Clock
 
Else
   - No Actions - (To add one, press 'Action')

 

Good evening,

I do not know what type/model of thermostat you have, but for me, on my honeywell z-wave thermostat, when I use the synch time command it does not change the time of the thermostat to match that of the ISY.

cheers.

[DennisC]

I was under the impression that only Insteon thermostats synced the clock time. I don't believe this will work with zwave.

 

Dennis

[fryfrog]

Good evening,

I do not know what type/model of thermostat you have, but for me, on my honeywell z-wave thermostat, when I use the synch time command it does not change the time of the thermostat to match that of the ISY.

cheers.

 

 

I was under the impression that only Insteon thermostats synced the clock time. I don't believe this will work with zwave.

 

Dennis

 

I just went ahead and tested mine, set the time back by a couple hours and hit the "Synchronize Clock" button at the bottom of the thermostat's entry in the ISY. It flipped it back to the current time. I'm using a Trane TZEMT400BB3.

[Amigo]

That is great news, I am glad at least it works on the Trane thermostat. I do not have that luck with the Honeywell one.

cheers.

[ISYhbsh01]

Good afternoon,

Yes, in my experience some z-wave thermostats only report back temperature changes, so if you want to know setpoints, or fan mode, fan status, system mode, etc. you have to query/poll the device.

I can confirm that the honeywell z-wave thermostat will report all status changes without a need to query.

cheers.

Wow, thanks for telling me this important piece of information. Is this something that would be made known from the product description of the thermostat or you would find this out only after buying and trying it out?

[Amigo]

Wow, thanks for telling me this important piece of information. Is this something that would be made known from the product description of the thermostat or you would find this out only after buying and trying it out?

 

Good morning,

I have not seen any where in the documentation of the devices that I have dealt with, where this was clearly stated.

You should specifically ask the manufacturer if they support 'status reporting' for the parameters that are important to you.

Or I am sure if you find a particular device, some one on this forum has tried it so we can provide feedback.

If you have a limited number of devices in your system, then polling them should not be a big deal in my opinion if there was no other option.

cheers. 

[KeviNH]

I can confirm that the TH8320ZW1000 does not change the clock with the ISY's "synchronize clock" action.   It does automatically update the ISY with status changes.

 

As far as mysterious switching of setting either you have an ISY program or you have enabled a scheduling feature in the tstat to go into occupied mode or some other raised level mode. From my experience, it is best to disable all scheduling features of the Tstat if you want to control the settings via isy..

 

I have the Honeywell TH8320ZW1000 Z-Wave thermostat.  I use the scheduling features of the thermostat, then have the ISY set the thermostat to "Energy Save" mode (and back again) based on occupancy sensors and also IFTTT.

[DennisC]

I can confirm that the TH8320ZW1000 does not change the clock with the ISY's "synchronize clock" action.   It does automatically update the ISY with status changes.

 

 

 

I have the Honeywell TH8320ZW1000 Z-Wave thermostat.  I use the scheduling features of the thermostat, then have the ISY set the thermostat to "Energy Save" mode (and back again) based on occupancy sensors and also IFTTT.

I have the same thermostat and agree with your findings. I use my ISY to set back the temperature based on both time of day and occupancy.

 

Dennis

[Amigo]

I can confirm that the TH8320ZW1000 does not change the clock with the ISY's "synchronize clock" action.   It does automatically update the ISY with status changes.

 

 

I have the Honeywell TH8320ZW1000 Z-Wave thermostat.  I use the scheduling features of the thermostat, then have the ISY set the thermostat to "Energy Save" mode (and back again) based on occupancy sensors and also IFTTT.

 

Good evening,

I have the same thermostat, but I opted to do all scheduling and setback in ISY. The thermostat is remote so I do not easily have access to manually adjust its own scheduling for holidays, etc. if I had enabled it.

cheers.

[KeviNH]

If you have a Honeywell TH8320ZW1000 (aka YTH8320ZW1007) and have lost Z-wave communication, see this thread.

 

Basically, the Z-wave daughterboard does not have positive retention within the thermostat, and can pop loose.   If you take the thermostat off the wall, you'll notice that one side has a plastic cover with several notches.  If you carefully insert a flat edge from the side of the thermostat, you can pop off this cover, and will see the back of the Z-wave module.

 

Push on this gently, if it was loose, it will pop back into place.

 

I cut up a scrap of high density foam and put it between the plastic cover and the circuit board, this should be sufficient to keep the module from coming loose again.