When I arrived I was getting ready to test shower temperature, but I was advised that no hot water at all was available at any faucet. When I went to inspect boiler room discovered circulator pump had failed. When I discussed about filled circulator pump with customer he notified me that Bottini had replaced it in August. And I explain to the customer he should probably call Bottini and have them come back on the warranty. He called Bottini while I was there they are coming to look into it.