Hive heating operating problems.

[Mottie]

With my Hive active heating, I like the fact that the boost button is in the lounge instead of tucked away in the airing cupboard and that you can programme the whole week to come on at certain times at set temperatures but........ some things I don't like compared to my old hard-wired Honeywell setup is that with my old system, when I was going to bed at night, if it had been a mild day and was going to be a cold morning I could crank my room stat up for a warm wake up. Similarly, if it had been a cold day and was going to be mild the following day, I could turn it down so that I didn't wake up roasting. Unless I'm doing something wrong, I can't see how to do that with Hive without reprogramming the bloody thing. Also, my old Honeywell room stat with TPI prevented the room temperature from overshooting by more than .5° but the hive exceeds this by a fair bit which means I'm forever changing the temperature. Does anyone else have that problem or am I just doing something wrong?

 

[stem]

A room thermostat is designed to get your home to the comfortable temperature you want and once it's there maintain that temperature automatically. That should happen regardless of it being a "cold morning" or a "mild day". So, if you like your home at 20 degrees that's what you get, be it mild or cold. You certainly shouldn't have to work it manually and "crank" it up or down according to the weather. That's the very process a room thermostat was designed to eliminate. So I wouldn't be surprised that Hive doesn't have that facility.

When it is cold, setting the room thermostat higher won't get your house warmer any quicker, it will just keep it going until the higher temperature is reached.

However, if your home is getting too hot because of the heating being on when it shouldn't be (ie not because of other heat sources such as open fires, cooking, sunlight, etc.) and the Hive isn't maintaining the temperature it's set to there's something wrong with it. I'm not aware of anyone else reporting one overshooting the set temperature.

 

[Mottie]

When it is cold, setting the room thermostat higher won't get your house warmer any quicker, it will just keep it going until the higher temperature is reached.

My Honeywell DT90 did with TPI. If it was set at say, 21.5° it would get to 20°, stop, wait a while to see if the temp got higher, then start again, stop when it gets to 20.5°, stop, wait, check and if no increase go on to 21°, repeat until it got to 21.5°. That could take some time. If I wanted a quicker warm-up, I'd boost it to 23° and knock it back down to 21.5° when it hit that temperature. It would then fire up the boiler for short 6 minute bursts 6 times per hour to maintain that temperature as long as it hadn't exceeded 21.5°. Hive doesn't seem to do that and I don't know if it Is supposed to.

 

[stem]

If I wanted a quicker warm-up, I'd boost it to 23° and knock it back down to 21.5° when it hit that temperature.

Except it wouldn't have given you a "quicker warm up" The thermostat is only an on/off switch. It simply turns the heating 'on', meaning that it would have got to 21.5° just as quickly if it was set to 23° or 21.5°. The only difference is that if set to 23° it would have not switched the heating off when it reached 21.5° but carried on until it reached 23°

If you want your home to be 21.5° that's what the thermostat should be set to, if you want 23° that's what it should be set to. There shouldn't be a need to keep adjusting it.

 

[Mottie]

Except it wouldn't have given you a "quicker warm up" The thermostat is only an on/off switch. It simply turns the heating 'on', meaning that it would have got to 21.5° just as quickly if it was set to 23° or 21.5°.

I know what a thermostat does but as I explained earlier, a TPI thermostat set at 21.5° from cold, does not go straight to 21.5° before switching off. If it did, the room temperature would overshoot and it's specifically designed to prevent that. Perhaps you should look up to see how they work.

 

[stem]

Ah my apologies, I didn't notice that your:

old hard-wired Honeywell

was also TPI.

So I suppose that the answer is to start the heating a little earlier so that it's finished it's fine adjustment before you get up. It should only be small adjustment so not take that long to settle.

 

[Johnmdc]

If you go into manage devices in the Hive app and select your thermostat there is a setting called "ready by."
If you enable that, then the Hive will calculate how long it takes to reach the required temperature at the time you want.
So if it is a mild morning it will come on later than if it was a cold morning.