The landlord is responsible by law for certain repairs. Generally speaking, the landlord is responsible for repairs to the structure and exterior of the property, sinks, baths, and any other sanitary installations within the property. They should also make sure there is suitable heating, although the law is a little vague on what type of heating this should be. The tenant must do minor jobs, like replacing fuses, or clearing a blocked sink. They must also repair damage that they or their visitors have caused.
You should report any faults or damage to your landlord immediately and give him a reasonable amount of time to carry out the work. If your landlord fails to carry out the repairs, you should contact the Housing Enforcement Team, which can make your landlord carry out certain repairs.