Hey Chris, I am still unclear - what is the problem with your water heater. You say you were charged £300, what was this for? What model of water heater do you have? In block A and B we have Gledhill units, but I thought block C (Shared ownership) and later have Heatrae Sadia units with timers fitted as standard. Am I wrong?
The common problem at Viridian has not been due to faulty appliances, but due to a lack of instruction on how to use the water heater.
Tell me more, I may be able to help.