My 3rd Generation Heat link has no output to the thermostat, no lights and so the reset button is not working. I therefore have no heating. It is receiving a 240v supply. The power supply was interrupted yesterday for about 5 minutes at about 1000 hrs. The system reconnected itself and continued to work normally until its programmed switch off time at 2300 hrs. The system did not restart the following morning and the thermostat battery was drained. After it was recharged it showed an error code H72. It sounds like this is a common problem for units over 18 months old.
The unit was professionally fitted in February 2020. The electrician who fitted it can not attend until the middle of next week. His prognosis is that the Heat Link will need replacement. How to I start the warranty claim and how do I bypass the thermostat to use the boiler heating controls?
