Hello
I find myself in the unfortunate position of being unemployed at the moment and savings are depleting quickly. I have just started heating a couple of days ago, and I forgot that I noticed already when switching it off in April that the boiler was running continuously, which is not what I want given the lack of money supply.
System is:
However, even when the Evohome system sends no "run" message to the boiler, boiler is still running. The BDR91 relay light shows there is no issues neither. It is switching on continuous green when there is a "run" command or is switched off otherwise.
Everything used to work fine until (again! At least fifth time) one of this sh_tty Danfoss actuator microswitch died (resulting in boiler running continuously again as the death of the microswitch seems to result in sending a "run" signal to the boiler). I replaced the actuator like-for-like (after having moved a few times manually the valve, that does not seem to be particularly difficult to turn anyway), wiring it exactly the same and everything was fine again for a couple of weeks. Then, again, boiler was again running continuously. Thinking it could not be the Danfoss actuator as it was brand new (and they last usually ~2years), I de-wire the Honeywell actuator for the ground floor zone and force it open with the lever. Still, boiler is running continuously.
So, I'm thinking that I either "disconnected" the BDR91 relay as removing cables may have prevented it from sending signal to the boiler, or the same with the TLSC command for the cylinder, or that, again, the HPA2 has died after just a couple of weeks this time. In any case, I think I'm done with these actuators for the moment and want them disconnected, even if the boiler may consume a bit more gas to keep water warm in all zones (what it does anyway already for 1st and 2nd floor when any other zone was running). The additional consumption will for sure be less than having a boiler running continuously.
So, please, would anyone be kind enough to explain to me how to wire everything properly, excluding the actuators? Vaillant boiler has 2 large cables, each with blue/brown/green-yellow cables (maybe one for commanding heating and the other one for commanding water heating?), main to the Honeywell wiring box has the same blue/brown/green-yellow cables, as does the BDR91 and the TLSC thermostat. So, it is about how to connect everything together properly.
And if anyone is even kinder and can spend a few minutes explaining how these actuators are supposed to be wired as I have a spare HPA2 and may use it to leave the valve closed to the water cylinder if not needed. HPA2 has 4 wires blue/brown/grey/orange while the Honeywell V4643H 1056 has 5 wires blue/(light) brown/green-yellow/grey/orange.
In normal times I would call a plumber, but I cannot afford it unfortunately.
A great thank you in advance.
RRRR PPPP
I find myself in the unfortunate position of being unemployed at the moment and savings are depleting quickly. I have just started heating a couple of days ago, and I forgot that I noticed already when switching it off in April that the boiler was running continuously, which is not what I want given the lack of money supply.
System is:
- Vaillant Eco Tec 630 from 2014
- Vaillant Cylinder 180 (don't think the model is relevant but tell me if it actually is, likely some Unistor from 2014), with a TLSC thermostat to command the boiler + an electrical heating part in case there is an issue (that I used for the last 6 months when boiler was off for ~2.5 hours of water heating a day). TLSC seems to work fine as it clicks when I turned the temperatures lower or higher using the rotator.
- 3 actuators:
- (Shi__y) Danfoss HPA2 for the water heating
- (Shi__y) Danfoss HPA2 for all radiators on 1st and 2nd floor (has been disconnected for a long time as it kept dying every other year)
- Honeywell V4643H 1056 for ground floor (underfloor heating)
- Evohome system
- one BDR91 commanding the entire system to the boiler
- rest is many radiator valves and multiple commands for underfloor heating
- One Honeywell wiring box, with a separate main supply.
However, even when the Evohome system sends no "run" message to the boiler, boiler is still running. The BDR91 relay light shows there is no issues neither. It is switching on continuous green when there is a "run" command or is switched off otherwise.
Everything used to work fine until (again! At least fifth time) one of this sh_tty Danfoss actuator microswitch died (resulting in boiler running continuously again as the death of the microswitch seems to result in sending a "run" signal to the boiler). I replaced the actuator like-for-like (after having moved a few times manually the valve, that does not seem to be particularly difficult to turn anyway), wiring it exactly the same and everything was fine again for a couple of weeks. Then, again, boiler was again running continuously. Thinking it could not be the Danfoss actuator as it was brand new (and they last usually ~2years), I de-wire the Honeywell actuator for the ground floor zone and force it open with the lever. Still, boiler is running continuously.
So, I'm thinking that I either "disconnected" the BDR91 relay as removing cables may have prevented it from sending signal to the boiler, or the same with the TLSC command for the cylinder, or that, again, the HPA2 has died after just a couple of weeks this time. In any case, I think I'm done with these actuators for the moment and want them disconnected, even if the boiler may consume a bit more gas to keep water warm in all zones (what it does anyway already for 1st and 2nd floor when any other zone was running). The additional consumption will for sure be less than having a boiler running continuously.
So, please, would anyone be kind enough to explain to me how to wire everything properly, excluding the actuators? Vaillant boiler has 2 large cables, each with blue/brown/green-yellow cables (maybe one for commanding heating and the other one for commanding water heating?), main to the Honeywell wiring box has the same blue/brown/green-yellow cables, as does the BDR91 and the TLSC thermostat. So, it is about how to connect everything together properly.
And if anyone is even kinder and can spend a few minutes explaining how these actuators are supposed to be wired as I have a spare HPA2 and may use it to leave the valve closed to the water cylinder if not needed. HPA2 has 4 wires blue/brown/grey/orange while the Honeywell V4643H 1056 has 5 wires blue/(light) brown/green-yellow/grey/orange.
In normal times I would call a plumber, but I cannot afford it unfortunately.
A great thank you in advance.
RRRR PPPP
