My riello boiler won't start after replacing the water pump?
I replaced the water pump on my riello oil boiler yesterday and it worked for a while and now it won't work at all. It looks like there is no power getting to it but that is not correct. Could an airlock be causing the problem?
could well have gone off on "high limit stat", check book to see if your boiler has one that needs to be manually reset.
jimtheboilerman, April 2012
More likely air in system open silver like nut on pump ,let water comes out while running ,also see that power is on and test with screw driver tester live is in pump