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What is the latest build of Cortex?

July 30, 2020, 3:36 pm
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Hi all,

Seems to be quite quiet on here these days ...

Any way, as per usual I managed to screw something up setting up my backups so had to go back to an older versio of the DB but it's not the end of the world. Annoying ... yes, but not the end of the world.
In any case, as I was updating the machine running Cortex, I noticed that the versio I'm using is W10.0.6 and hasn't been updated since September 2018. I was wondering if this was the case or if my updates are not working. I ran the update tool and it said that my W10.0.6 was the latest. Is everyone on W10.0.6?

Thanks.
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BDR91 spacing

August 2, 2020, 7:06 am
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Hi Folks,

My Evohome system was installed a couple of years ago and seems to work OK, apart from the hot water being a bit erratic. I'm wondering about the positioning of the BDR91s. They are quite close together (see photo) and very near the pipework. Is this likely to cause problems? Are they the sort of item that needs to be 30cm from other stuff??

The installer's coming next week to do a couple of jobs and I'm thinking of getting him to move them when he's here.
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Network Watchdog without an MFP?

August 5, 2020, 12:17 pm
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This may be a dumb question, but to date - I've not actually set up / relied upon Reflex at all, but I want to get something setup "In case".

Skimming the Help pages ... It seems to state that you can only setup a System watchdog on an MFP - is this true? (I don't have any MFP's on my setup).

Without it, if my PC hangs / crashes or is otherwise unavailable, would Idranet not fall back to Reflex control?

Cheers

Cliff
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Evohome - phantom demand from Open Therm.

August 10, 2020, 12:51 am
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As per title, system has been installed and working fine for last couple of years.

Ideal logic combi boiler, evohome and 2 HCE80.

Middle of the night the boiler powers on as 15% heat demand from Open Therm. Now rhyme or reason especially as it was such a warm night.

Ended up pulling batteries & reinstating them in the controller to eventually resolve.

Any thoughts on what could have triggered this 15% heat demand?

Thanks
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Loxone releasing a new product 3rd Sept

August 12, 2020, 1:09 am
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So what will they be releasing??

Maybe a new audio server.
Or a new miniserver with more integration built in.
Or ????
Any other ideas?
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Flakey dt92's - is there a good fix?

August 12, 2020, 7:59 am
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Been a while since posting - of course because everything is working well! Or was...

My install has 2 rooms running as multiple HR92s controlled by a dt92 temperature sensor - works great, no problems on a day-to-day basis.

However, a year or so ago, I would occasionally get multiple room phantom overrides and the system would go into meltdown. Invariably the Living Room dt92 would be found with a blank display. I decided this unit must be faulty and bought a replacement. All has been good since then. I even found the spring clip fix mentioned on the forum and got the faulty dt92 back into a decently reliable state (and put it away in a spares box).

Over the past few weeks the dt92 in the kitchen has now started this ridiculous behaviour - I'll get a flood of phantom overrides, loads of zones will end up over-heating, and there, in the kitchen, the dt92 will have become an ex-dt92 with no display. The last time this happened I even had an error message on the EvoHome controller about battery level low on the temperature sensor in the kitchen - it wasn't and isn't - batteries were replaced a month or so ago and are perfectly fine. Taking off the front cover and simply spinning the batteries gets it all running again.

Any ideas on a reliable fix? I suspect it's those darned battery connections with spring clips on to the controller board, but hard to understand why that would be happening - two dt92s have suffered, neither of them have had recent battery changes, both are solidly wall mounted, there is no movement that would trigger this. Is it worth trying to solder stuff?

It honestly wouldn't be a massive problem if it wasn't for the fact that as the dt92 dies, it takes out half the heating system and leaves me with a gas boiler running away in the middle of the night in summer....

To add another level of cr!pness, I just had one of the hr92's signal a communication failure in the kitchen - went to the unit and found it's display was off. Had to swap out batteries on that to get it started again and then found when fitting it that the lightest of finger pressure to the side of the display will cause it to turn off. It's in a well shielded location, has never been knocked in it's life.
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All rads working with HR 92 EVOHOME bar one1!

August 12, 2020, 11:25 am
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I've just fitted my system with the help of a good electrician. All the rads are working in harmony with the HR 92's but one rad is getting hot whenever the hot water is on! Its HR92 is set to off, but still gets hot! I've set it to full stroke, parameter 6, but no joy. Any advice welcome!!
DW
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Firmware 02.00.19.33 Released?

August 18, 2020, 11:19 pm
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Yesterday I noticed a message I have never seen before had popped-up on the display of my Evohome. Something about hot/cold boost? Today, of course, I rushed to this forum to investigate this and found the firmware 02.00.19.31 Beta Trial threads. I missed it completeley, being in summer-sleep. ;) Anyway, it didn't take long to discover a new firmware version 02.00.19.33 has been pushed to my Evohome!

I could of course read all beta discussions, but are there releasenotes somewhere, or can somebody do a nice writeup about all features that made it to this new version, and what not??
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New Install Help

August 23, 2020, 2:47 am
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Hi

Looking for a bit of help...

I've just finished converting my S Plan+ system to EvoHome, but I'm having problems with the radiator values not switching the CH BDR91 value. The boiler fires (controlled by the Opentherm Bridge) but the CH zone value remains closed? The BDR91 controlling the CH value works fine when tested manually.

For background:

Boiler controlled via Opentherm, switched live discounted. This appears to work fine. EvoHome configured for Opentherm Boiler control
Ground Floor, and 1st Floor CH valves linked together. Testing the attached BDR91 manually the valves on/close as expected.
EvoHome hot water kit connected. Setup configured as a 2/3 port valve, with both HW and CH values binded. This appears to work fine. When hot water is needed the HW valve opens etc...
14 HR91 valves attached to radiators
For testing purposes 1 radiator valve zone configured and binded to 1 of the HR91. Testing, this calls for heat, boiler comes on, however the CH valve doesn't open (green light remains off).

Any help would be greatly appreciated. I assumed that when a HR91 called for heat, it would open the CH valve setup during the Stored Hot Water setup?

Many thanks
Dan
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Evohome/HR92 battery notification

August 24, 2020, 6:05 am
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I am a satisfied Evohome user, i have 7x HR92 and a floor heating control unit in my setup. The only thing that keeps bothering me is the (lack of) low battery notifications via email/app and especially the subsequent 'opening of the radiator', or as the local evohome support calls it; frost protection.
It has occurred 2 times during a holiday and most recently at night in the baby room, effectively pushing the room temperature to >30 degrees C on an already hot summer night. There was no notification on the Evohome hub during the day and the last time the batteries where proactively replaced early this year, so probably something wrong with the battery. Either way, we woke up with a crying baby and they notification was shown on the evohome hub and the radiator was full on. The HR92 itself was still functioning though, albeit almost out of battery.

Ideally I can disable the automatic opening of the valve when the batteries run out, but support advice me that that is not an option and also won't happen. Although i can't get an answer as to why 'frost protection' would be required in a home environment? So now i'm just looking for better options to get notified when there is a battery issues, so i can fix it before it goes in the frost protection mode. If there any solution out there to get a notification somehow? Either via email, text, in the Home app? If there is some notification other than the one i get on the screen of the Evohome? Any help is welcome!
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Smart Fused Spurs

August 24, 2020, 7:04 am
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Greetings,

I'm about to take on a property which has electric heating throughout, as well as electric hot water. All of this has been newly installed but the seller has gone the cheap route so it's all very basic (separate units with their own timers and thermostats, and no connectivity). It's a property that may be empty some of the time and will some of the time have rooms rented out.

1. The first issue is, of course, I need to be able to control all the units remotely so that I ensure I'm not wasting power while the property is empty.

2. The second issue is scheduled (and ideally thermostatic) control. While this is built into the radiator, I'd rather ensure that radiators aren't left blasting unreasonably at all hours of the day.

3. The third issue is the location of the hot water tank, accessible only through one of the bedrooms. A timer on this would be fine, but it would be good to be able to have a hot water "boost" button in a communal area like the kitchen should it ever be needed.

Every unit is on its own fused spur, which would be the ideal position for a smart interface. I've looked high and low for ideally a fused spur unit that would work with a Z-wave smart home system which also provides thermostatic control (or since it's z-wave would be operable using other thermostat units), but the best I've been able to find is a WiFi fused spur unit that has schedule control via an app (no thermostat, no ability to make it work with other buttons): https://www.amazon.co.uk/Timeguard-C.../dp/B07228W28L

Smart fused spur units seem like they should be one of the most obvious and widely available components of a smart home system, yet I can't find them anywhere?!

I would be very grateful if someone would be able to point me in the right direction.
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Evohome Controller Lockup

August 27, 2020, 4:40 am
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My Evohome controller locked up yesterday at 17:08.
The clock had stopped and there was zero heat demand on the radiators even though the rooms were below the set points.
I had to disconnect the batteries to get it going but the clock did not set itself to the right time.
The unit was not connecting to the WiFi and I had to disable the WiFi on the controller and set it up again before it would connect.
It seems that the batteries are making an intermittent connection with the terminals but as the controller sits on the cradle all the time I don't think that would cause a problem.
I thought I would remove the batteries and clean the terminals but it is almost impossible to get them out (unless I am missing something obvious).
One battery is almost covered over and you can't get at it.
I didn't have time to continue so I just put it back on the cradle and all seems to be well.
Has anyone else had a problem and how do you remove the batteries?
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Evohome Home Controller Beep

August 29, 2020, 12:29 am
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Hi

Since yesterday my Evohome Controller, which I have had since 2015, has developed a long loud beep noise.

At first, I did the usual checks, of making sure it is sitting on its stand and that the batteries are charging. This didn't work, and so I have changed the batteries in case one of them is not charging. Again, this didn't work.

Basically, what it is doing is every few hours it will send out one 3-4 second beep, then about half hour another one. There is nothing in the fault log, and I cannot deduce what is going on at all. As it is still summer, the heating has been off, but what I did do, is to turn it back and it is turning the heating on, and so it does appear to be working

Does anyone know what is going on and why it is doing this?

Thanks:confused:
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Evohome : opentherm compatibility problem with Navien combi

August 31, 2020, 12:51 pm
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Hi all,

I've had an evohome setup, with a Honeywell Opentherm gateway, for just over a year now, working fine with my old Ferroli boiler.

However, recently I had the boiler replaced with a shiny new Navien unit.

As best I can tell, in Opentherm mode, the Navien disables front panel control of both the heating and the hot water. However, the Evohome does not seem to send the necessary command that the boiler expects, so hot water remains disabled.

I signed up for the Evohome beta and it is now running on my Evotouch but this has not had any effect on the problem.

To solve the problem the boiler installer has loaned me a BDR91 and put the boiler in regular switched thermostat mode, which works perfectly but obviously I lose the benefits of Opentherm.

Is there anything I can do here other than hope that either the evohome or the boiler have their firmware updated to account for this scenario ?
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Block on maximum temperature in one zone - limited to 22C

September 2, 2020, 1:31 am
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I have just tried to turn the heating up in a room as we have a friend coming and I know he feels the cold! The app would not let me increase the temperature in that room above 22C. It stopped with that as the maximum. I checked other zones and with all the others the maximum setting is 24C. This has not happened before and no idea why, without any intervention from me, it should be limited to just one room or zone. Anybody know if there has been some spurious update to the app or software?
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Radiators with Evohome HR92 and Valencia valves warming when they shouldn't

September 9, 2020, 5:40 am
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Hello

I hope someone can help with stopping radiators warming unexpectedly.

I've just had Honeywell Valencia V120-15 valves and Evohome HR92s put on all but one of my 9 radiators over 3 floors served by a combi boiler. We have a schedule setup in the Evohome app and optimisation is turned on.

We are also using Control4 but this should be just an alternative interface, no additional instructions. An issue that may or may not be related is that it sometimes seems to get confused between (exaggerated) Fahrenheit[?] and Celsius readings. There room value do flick back. However the tiles consistently displays "49" for all rooms rather than a realistic temperature.

For three days now radiators in just 2of the rooms have been hot without any apparent need. The current and upcoming set point is (well) below the current temperature.
temperature-last-24-hour 7-9-2020.jpg
temperature-last-24-hour Office 2020-09-08.jpg

Other rooms in the house have not gotten above 22 degrees.
When I check the HR92 position it says it is 00 (closed) and the controller says its not calling for heat (in the installation menu). Of course it could have gotten hot and already shut down.

I've re-run calibration on both. In the middle this I verified that the black wheel is turned fully clockwise.*
I hoped it was the optimisation settling down but its not getting better.

My only theory is that despite appearances, the valves are in fact open and that whenever another radiator calls for heat, these ones are getting hot water too.*

Any other explanations? What should I do?

Screenshot_20200906-203534_Control4.jpg Screenshot_20200906-203548_Control4.jpg
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fun with evohome and rfbee

September 9, 2020, 3:29 pm
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To investigate my problems with Opentherm/Evohome and my new boiler (ref. in another thread) I decided to get an RFBee and UartSBee.

To my pleasant surprise, this took about ten minutes to get working. I flashed the Evohome Firmware to the RFBee, reset it and it started dumping out the RAMSES-II messages on the serial port. Using the documentation on gitlab I was able to manually decode the hex to understand the message. Since I am using a regular BDR91, an evotouch and a bunch of HR92s, the messages passing to and fro seem to be completely consistent with the documentation on the wiki provided by "evsdd".

Rather than me decode the hex values by hand it would be handy if there was a script/tool that would sit on the serial port and decode each packet as it comes in - and even better, allow me to generate outgoing packets. Does such a thing exist ?

My thinking here is to leave the evotouch in place to manage the heating, but to augment it with something like Domoticz which can log statistical information and also allow me to control the Opentherm DHW setpoint.
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Evohome with multiple BDR91's, HR92's and UFH and NO boiler ?

September 9, 2020, 4:00 pm
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Hello,
Firstly, welcome and thank you for many good tips already from other threads.
Unfortunately I was not able to find answers to all my concerns and that's why I'm starting separate thread. I would appreciate some help in planning my Evohome installation in my countryside house. For quite some time I'm planning to upgrade the current heating system with Evohome for remote control, however I have quite unusual set-up and I'm not sure how to handle it.
Current system is as follows:
I have a boiler room with 800l heat buffer. The buffer can be heated from several different sources (heat pump, electric, wood) and I don't want to control with Evohome this stage. Hot water from heat buffer is distributed over the house in 3 separate water circuits controlled by 3 separate circulation pumps (let's call them A,B,C). Each of the pumps is controlled by on/off thermostatic switche in 3 different areas of the house (currently with classic electromechanical thermostats):
  • Circuit "A" provides heat to underfloor heating in big living room (no zones or separately controlled loops)
  • Circuit "B" provides heat to radiators on the first floor. Here I have in fact only one master bedroom which requires separate temp control. All other radiators may stay with current mechanical thermostatic valves as they are in non-living parts of the house.
  • Circuit "C" provides heat to radiators on the second floor. Here I have two bedrooms and a bathroom. Thermostat controlling the pump is somewhere on the wall in the corridor.

Here is what I was thinking about:
  • to place 3 BDR91's instead of each of 3 thermostats in all areas of the house to control on/off for all 3 circuit pumps.
  • The Evohome control panel would be in the living room and would also serve as a temperature sensor for this zone and switch on/off it's BDR91 for circuit "A"
  • For circuit "B" (master bedroom) either:
    (a) HR92 connected to BDR91 demanding the heat from circuit pump "B" or
    (b) DT92/T87 placed in the bedroom paired with the BDR91 for circuit pump "B", but with old mechanical TRV's. In such set-up the TRV would be usually set to "high" and the room temp would be controlled by switching on/off the pump.
  • For circuit "C" (upstairs bedrooms)
    (a) HR92 in each room. All of upstairs HR92 paired with BDR91 demanding the heat from circuit pump "C". I guess this requires setting BDR91 "C" as a boiler control, right?
    (b) alternatively, DT92/T87 placed in one of the bedrooms paired with the BDR91 for circuit pump "C" and simply controlling all the upstairs as one zone.

After quite some research and discussions: here are my concerns/questions:
  • it looks like it's not possible to have HR92's TRV in two different heating circuits, controlling two different BDR91's - circuit B and C. Is this correct? That's why I have the alternative solution (b) for circuit "B" eliminating the HR92.
  • is it possible: to have 2-3 separate zones in circuit "C" each equipped with HR92; all HR92's demanding the heat from BDR91 "C", but at the same time keeping the circuit A and B independent? e.g. if there is a demand in circuit A and/or B, but no demand in circuit C the BDR91 A and/or B would be in "on" mode and BDR91 would stay in "off" mode? I'm under the impression this is possible if BDR91 A and B are in the "electrical heating" mode (no boiler demand) but not sure if this can be combined with the BDR91 C controlling the HR92's ?

I would be grateful for clear indication what and how can be done in such set-up and of course all other feedback on this design is highly appreciated!
Thank you!
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New Install - Banging Head Against The Wall - Hot Water Sensor!

September 10, 2020, 4:58 am
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Hi

I installed a few weeks ago our new Evohome installation. The CH is working as hoped but the hot water regularly (every few days) appears to overshoot the hot water temp by a considerable margin (set at 55, gets to 67). I've hooked our install up to Home Assistant so I can clearly see the hot water temps being reported overtime.

System overview:

  • Wifi controller
  • 14 HR91s
  • 2 BDR91s (one for HW, one for CH)
  • Hot Water Kit, unvented cylinder, wired in series with existing high-limit stat.
  • Water temp 55c, differential 5c (also tried 10c).
  • Boiler via Opentherm, temp limited to 70c and being followed

I've read the forum, so I'm aware of others having/or have had similar issues. I've tried adjusting the battery contacts, moving the sensor, bringing the controller closer etc.. etc.. but yet still the problem persists. The only thing to be aware of is the hot water insertion sensor currently has no thermal paste applied, but it's sitting snuggly within its well.

A few observations for the hot water:

  • Sensor signal strength is reported as excellent (5 flashes)
  • Removing and replacing sensor batteries results in an immediate temp update being reported.
  • Temps appear to be reported in consistently largely every hour, but sometimes every couple of hours if no water is being used.
  • Temps appear to be reported more frequently when temp is changing significantly - as expected, every 5-10 mins
  • However, the overshoots ONLY appear to happen when the water temp doesn't reach the set temp within 5-10 mins of the water heating, our cylinder reheats quickly. So for example, the first temp report after having a shower, occurs within 5-10 mins of starting the shower and the temp reads 54.9, no further temp is reported for 1 HOUR! By which point the water temp reaches the 66-67c, which I guess is the limit possible with the boiler set to 70c.
  • If the water is reheat is reached within 5-10 mins, say 55.1, the system works perfectly, within another temp reading reported within 5 mins, the temp creeps to say 57 but otherwise is perfect.

Any help, or guidance would be really appreciated.

Given the temps are being reported, I've not bothered with the thermal paste so far.

The obvious issue is the temp not being reported for an hour whilst re-heating, the moment it's reported the system shuts off etc... perfectly.

This morning, following a couple of showers we've had two consecutive 67c overshoots, yet for the previous 2-3 days things appeared to be working as planned.

This graph shows the overshoots, the green dots show when temp readings are being received. Notice the lack of readings when the temp is climbing above the set point.

Water Graph.jpg

Thanks
Dan
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Automating electric water heater.

September 11, 2020, 3:10 am
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1stly I am just thinking about this, it will be a while before I can implement anything.

I have a new thermal store heated by 2 immersion heaters. I got them to add a couple of sockets so I can add some thermostat pockets if I want.

What if any options out there exist for me to control this taking into account the water temperature in the tank.

tia
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