MichaelPD

Hello. I am new to this so forgive me if this is something that others have already asked. I installed an ASHP two years ago, I had/have an oil fired boiler, and because it was only a few years old the plumbing engineer and I decided to combine the two into a hybrid system. Both Boiler and ASHP are Grant. Grant had a 'crossover' system in place to accommodate the two different heating systems. I also have a Solar PV system and battery storage to complement the ASHP. I had hoped that the system would be relatively easy to use, and I guess it is. But, I am struggling again to get one of my rooms (the one furthest from the heat source ) up to temperature. I had used the Hive thermostat (down stairs, up stairs, and DHW) on a schedule up until a few days ago, and decided to just have it ON for upstairs and down stairs to see if it made a difference, which it doesn't. When the DHW comes on schedule, then the temperature drops, this is acceptable, but it keeps dropping. I have no way of knowing how long it takes to heat the DHW and was told that even if the DHW was ON for say six hours, the System would 'sense' that the DHW was at temperature and would divert to CH again. But it looks like this is not the case? Because of the cold snap at the moment I don't want to risk having the DHW switched to ON incase it cools the house and take too long to switch back to schedule. So the short question is how should I schedule, or not the DHW so that there is NO drop in temperature in the house. Lastly, is there any forums with people in the same situation as myself? Struggling for information and help with these kind of systems. Thanks Much appreciated