Heat not consistently turning on

[Brooklyn22]

My nest works normally most of the time, but once every few weeks, the thermostat will say it’s on, but the boiler does not come on. I haven’t been able to troubleshoot the problem because every single time, it comes on as soon as I cycle the heat setting. (I turn the thermostat down below the temp then turn it back up above the temp) 

is this a boiler controller issue or a thermostat issue?  Any ideas welcome. 

[CristianC]

Hey @Brooklyn22,
 

Thanks for reaching out. It sounds like the heating valve might get stuck sometimes. Have you seen any messages on the thermostat display? 

[AlexD]

Hi, I wanted to check in. Do you need any further assistance? if so, make sure to let me know. 

[george_t]

It's been a while since this thread was last updated so I'll go ahead and lock this thread. If you're still experiencing problems, please feel free to start a new thread and we'll be happy to help.