OK just had a strange one, and this sounds very similar to what was reported on here in the last few days. (Can't pin down the specific thread unfortunately so starting a new thread)
I noticed tonight that the living room was struggling to maintain the room temperature after the other downstairs zones had gone off - it was nearly 1C below its set point and the radiator only luke warm, which is unusual as the living room does a great job of maintaining a steady temperature.
I didn't think too much about it as it was soon 11pm so the zone went to the night time set back of 5C. Some time later when I was preparing for bed I came into the living room to check everything was off and could still hear the gentle hiss of the radiator, despite the control panel saying it was now scheduled to 5C. Hrm...
I checked the set point directly on the HR92 and sure enough it still said 21C when it should have been 5C at least half an hour ago. I checked on the controller on the heat demand screen and it said 14% demand from the Living room. I then turned the HR92 itself down to 5C manually and waited for that to complete. The heat demand stubbornly remained at 14% and the boiler kept going. Hrm x 2.
I have had occasional issues before with HR92's failing to report heat demand changes to the controller so I rebooted the HR92 and tested again - still no change in heat demand with it remaining stuck at 14% regardless of turning the HR92 up or down.
I then tried a reboot of the controller, which also didn't help. It was at this point that I noticed for the first time that the HR92 said "Unbound" instead of the zone name. Huh ?
Unfortunately because I have the screen taped flat on that HR92 to avoid toddler damage it's difficult to see the unbound word at the bottom unless I get down at floor level, so I don't know if it was reporting unbound all along or whether it lost the binding after the HR92 and/or controller was rebooted.
But it seems very likely that the binding was lost right at the beginning when the problem first occurred, before I intervened and was the original cause of the set point not changing and heat demand no longer propagating to the controller.
I've never had an HR92 lose its binding status and revert to "unbound" before so that's a new one on me...
After rebinding both the HR92 and DTS92 in the zone everything seems OK again but it's a bit unsettling that the binding mysteriously disappeared.
I noticed tonight that the living room was struggling to maintain the room temperature after the other downstairs zones had gone off - it was nearly 1C below its set point and the radiator only luke warm, which is unusual as the living room does a great job of maintaining a steady temperature.
I didn't think too much about it as it was soon 11pm so the zone went to the night time set back of 5C. Some time later when I was preparing for bed I came into the living room to check everything was off and could still hear the gentle hiss of the radiator, despite the control panel saying it was now scheduled to 5C. Hrm...
I checked the set point directly on the HR92 and sure enough it still said 21C when it should have been 5C at least half an hour ago. I checked on the controller on the heat demand screen and it said 14% demand from the Living room. I then turned the HR92 itself down to 5C manually and waited for that to complete. The heat demand stubbornly remained at 14% and the boiler kept going. Hrm x 2.
I have had occasional issues before with HR92's failing to report heat demand changes to the controller so I rebooted the HR92 and tested again - still no change in heat demand with it remaining stuck at 14% regardless of turning the HR92 up or down.
I then tried a reboot of the controller, which also didn't help. It was at this point that I noticed for the first time that the HR92 said "Unbound" instead of the zone name. Huh ?
Unfortunately because I have the screen taped flat on that HR92 to avoid toddler damage it's difficult to see the unbound word at the bottom unless I get down at floor level, so I don't know if it was reporting unbound all along or whether it lost the binding after the HR92 and/or controller was rebooted.
But it seems very likely that the binding was lost right at the beginning when the problem first occurred, before I intervened and was the original cause of the set point not changing and heat demand no longer propagating to the controller.
I've never had an HR92 lose its binding status and revert to "unbound" before so that's a new one on me...
After rebinding both the HR92 and DTS92 in the zone everything seems OK again but it's a bit unsettling that the binding mysteriously disappeared.
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