My system boiler seems to be exhibiting some very odd behaviour.
The heating had been off all day, so the system temperature was around 32oC. I turned the boiler on and it quickly got up to ~65oC. It continued to rise up to 81oC before suddenly dropping back to ~60oC. The temperature then climbs relatively quickly back to ~80 before dropping back and the process starts all over again.
The radiator's dont appear to be warming up. I can hear the circulating pump working, but it does sound like it's struggling. The whole system is only 3 years old and has been serviced annually. Any suggestions for what I could try? (I've tried turning the heating off and on again, but have the same problem).
The heating had been off all day, so the system temperature was around 32oC. I turned the boiler on and it quickly got up to ~65oC. It continued to rise up to 81oC before suddenly dropping back to ~60oC. The temperature then climbs relatively quickly back to ~80 before dropping back and the process starts all over again.
The radiator's dont appear to be warming up. I can hear the circulating pump working, but it does sound like it's struggling. The whole system is only 3 years old and has been serviced annually. Any suggestions for what I could try? (I've tried turning the heating off and on again, but have the same problem).