2Y or not 2Y?

Either way, this error code (Which Worcester says is "2Y") on the snazzy new boiler means:

"The boiler pump is not a Happy Bunny but I'm going to wait until Friday evening, when you haven't a snowball's chance in hell of getting a part or fitter until Monday, to kill it completely."

A few hours later and the boiler is refusing to heat anything above Slightly Tepid.  56 degrees would have been balmy by comparison.

Dug out the emergency heaters from the basement.  Thankfully all our paying guests this weekend are also friends and take such matters.in their stride.