Possibly. Depends on the make and model and whether it is displaying any fault code, flashing lights, indicator lights etc - you know, the sort of stuff that is different for each make/model - THAT YOU DIDN'T BOTHER TO MENTION
XXX
February 2016
Automatic Answer
We may have found other answers which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix home heating systems.