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Also remembered that CH & HW above/below PROG. are used to set which periods in the day are used. 24h means on all the time, once is between first & last times, ALL honours the times & OFF means it's off! I think you can also set different times across the week but not sure of the process for...

That looks like a Landis & Gyr central heating programmer, unfortunately I cannot remember the model number. If I recall it's programmed by moving the red slider across to the appropriate position, eg left most for HW on in the morning, then the left/right arrows for the time in that slot...

Did you previously hear a click when the thermostat was turned up or down and that's no longer occurring? To assist can you remove the front from the thermostat and take a picture of the wiring. Generally there will be screws top or bottom which secure the front, however sometimes they can be...

It's likely you have received an update for both the hub & iTRV as the latest levels came out in the middle of November. If you see 3.10.8 & 0000ea60 respectively those are the recent updates. I cannot comment on noise as I don't have any smart TRV's installed on my radiators. You may wish to...

That seems to be an error introduced in the 6.1.0 version of the Wiser app. I can see on the home assistant forum https://community.home-assistant.io/t/drayton-wiser-home-assistant-integration/80965/1453 see post 1439. There is an acknowlegement from from Jamie (who works for Schneider) that...

That seems to match up with what I'm seeing. If the demand percentage is 70% or higher the boiler is running continuosly, less than 20% its pretty much off. Anything in between Wiser cycles the boiler on/off. Roughly 1.5C difference is 70%, 1.0C is 50% and 0.6C is 40%. I have also seen 0%...

I assume you have a single channel Wiser designed for Combi boiler based on existing back plate. It's a straight swap with no rewiring required, no need to even touch the back plate as that's good to go as is.

@ Mister Banks You probably need to determine what you objectives are. In my case 1. House warm when I roll out of bed 2. lower temp during the day 3. slight increase in evening until retiring for the night 4. allow house to cool overnight The first is achieved by enabling Comfort mode which...

When my Wiser system was first installed I looked at how the house cooled over night and used that as a guide for the setback temperature. It was very rare for the lounge temp to fall below 17.5C even in mid-January. Hence I set 17C as the level at which the heating would come on overnight. From...

if comfort mode is also off, I would have expected the heating to kick in at 21:30 to boost the temp by a degree. That said your schedule does not match your earlier comments. The schedule says 20C 16:00 to 21:30, 21C 21:30 to 22:00 & 12C afterwards, but you said 19C setpoint with an actual of...

do you have eco mode on? If so I suspect it's saying you want 12C at 10pm and based on that the heating needs to go off much earlier. Assuming a decrease rate of 1C per hour that implies to Wiser "I better cut the heating at 2pm"!. OK, slight exaggeration but the principle applies. See my...

not sure I understand the problem. If the current setpoint is 19C with a room temp of 19.5C why would you expect the Wiser to call for heat. A variance to that may be if comfort mode is on and the system needs to increase the room temp to achieve your next setpoint by the desired time. Maybe...

The Hive receiver would normally replace the existing timer/programmer rather than the thermostat. As ianmcd says it requires a permanent live connection. In theory when an on period is selected on your timer there may be power at the thermostat on terminal-1 but that depends on your Combi...

It may be worth looking at this https://www.diynot.com/diy/threads/drayton-wiser-and-vaillant-boiler.513988/ Initially I was worried my boiler was running too frequently having moved to Wiser from a "dumb" thermostat. There is much complexity behind TPI as a quick google search will show.

take care with eco mode as it may cut your heating before you wish. Note the caveat I included as you may need to review when to drop the scheduled temp. Also see that I'm using a two stage reduction overnight which I find works fairly well.

neither. I run a Raspberry Pi which collects data from the Hub directly. https://community.home-assistant.io/t/drayton-wiser-home-assistant-integration/80965 That is one of the real advantages of Wiser, I believe Hive requires retrevial via the internet.

That seems correct to me. Wiser cuts the boiler below your desired temp. The pump should run for a further 5-10 minutes and the room temp continues to rise.

Jonathan. That's pretty much what I'm seeing from my Wiser system. Using today as an example 05:30 , room temp = 18.5C ; target 21.0C ; boiler came on with 100% demand indicated 06:10 19.8C demand dropped to 61% and boiler started to cycle on/off as driven by Wiser with brief 5 or 10 minute...

It was more an observation that the room is decreasing at a faster rate than I would expect. If the room is unused, there is little point keeping it heated evenings/overnight. Comfort mode would allow the system to target your desired temp for 9am. At the moment you are providing 1 hour of...

correct. Looking at those charts you have 20C set at 8am but its not getting there until 10:30 (ish). If comfort was enabled the heating would probably fire up at around 5am asis. It seems it takes 3 hours to go from 15.5C to 20C. Hence you could change it to 20C at 9am (with Comfort) and the...