https://www.googlenestcommunity.com/t5/Nest-Thermostats/H71/m-p/90788#M20360 <P>I have no heating due to error H71, I have checked the circuit breakers, and tested the heat link by pressing the button but no joy, I have no lights on the heat sink. Disappointing as the combi boiler has only been in situ for about ten months.</P> Mon, 24 Jan 2022 06:13:32 GMT Tramman1 2022-01-24T06:13:32Z https://www.googlenestcommunity.com/t5/Nest-Thermostats/H71/m-p/90788#M20360 <P>I have no heating due to error H71, I have checked the circuit breakers, and tested the heat link by pressing the button but no joy, I have no lights on the heat sink. Disappointing as the combi boiler has only been in situ for about ten months.</P> Mon, 24 Jan 2022 06:13:32 GMT https://www.googlenestcommunity.com/t5/Nest-Thermostats/H71/m-p/90788#M20360 Tramman1 2022-01-24T06:13:32Z