Are you getting hot water?
ok, do you have a room thermostat?
Is it a wireless thermostat?
Can you try a couple of things for me?
Can you take out the batteries and place the transmitter under the boiler
Can you turn off the power to the boiler and receiver
Wait 5 minutes
Insert new batteries
Turn the power back on
I don't have new batteries
Let me know if the two units resync and the boiler fires
why would the boiler be running constanly
perhaps the wireless stat is not turning off the heating
Try using the same batteries with the procedure above and let me know
How did you get on?