Hi all,
I installed Evohome to control my parents oil central heating a few weeks ago. Simple system - 12 zones, configured as one DHW relay and a boiler relay, hot water overrun set to 10mins. Boiler demand set to 3 per hour, minimum of 3 mins each time. Optimisation is turned off (for now). System is working fine, BDR91's turning on and off when they should etc, so no binding issues. Parents over the moon with it.
Now at the time it was installed there was no pump overrun. Believing this was wasteful, last weekend I had my dad install a simple overrun timer to keep the pump running for 10 mins after boiler demand finishes, which seems to work fine.
However, this week, the Evohome has been overshooting set temperatures more, often by 3 or even 4 degrees, making rooms uncomfortably warm sometimes. For example, living room set to 17C reaching 21C!
What could be causing this? Would the system benefit from a factory reset so it can "learn" with the pump overrun (if it does learn at all!).
Thanks,
Gareth
I installed Evohome to control my parents oil central heating a few weeks ago. Simple system - 12 zones, configured as one DHW relay and a boiler relay, hot water overrun set to 10mins. Boiler demand set to 3 per hour, minimum of 3 mins each time. Optimisation is turned off (for now). System is working fine, BDR91's turning on and off when they should etc, so no binding issues. Parents over the moon with it.
Now at the time it was installed there was no pump overrun. Believing this was wasteful, last weekend I had my dad install a simple overrun timer to keep the pump running for 10 mins after boiler demand finishes, which seems to work fine.
However, this week, the Evohome has been overshooting set temperatures more, often by 3 or even 4 degrees, making rooms uncomfortably warm sometimes. For example, living room set to 17C reaching 21C!
What could be causing this? Would the system benefit from a factory reset so it can "learn" with the pump overrun (if it does learn at all!).
Thanks,
Gareth
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