Main Eco 30 Combi boiler illuminating error 110

Hi Guys,

My five years old Main Eco 30 combi boiler is illuminating a 110-error code since last night. I have tried to fix it after consulting the Main boiler’s user guide but no success. Has someone faced this issue earlier if yes then please tell me the ways of fixing this issue.

Waiting for your response


Hi Jen,

An error 110 deals with the faulty thermostat according to the Main boiler’s user manual. At times, an out of order thermostat can cause several issues in an otherwise strong system. In order to fix this problem, check the thermostat settings. In case the settings are correct but temperature is inaccurate then, it is better to replace the thermostat to prevent further loss.