I'm going to assume when you say taps, you mean faucet. Did it just stop working all of a sudden or did something happen before it happened(turn off a valve, lost water, etc)?
just stopped working, thought it was the faucet (it was old) replaced still didnt work on the hot side. cold side fine and had pressure. now woke up this morning and the cold doesnt work either,,,we are thinking frozen pipes, older house all copper...just called a plumber...any thoughts u have before they come?