fitted a new thermostat sensor which seems to have sorted the overheating problem, the past few days the water has dropped so had to top it up i believe this is as air is working its way out the system? i know its certainly not just using water. as for the heaters though, it seems when i first turn them on they are luke warm or nice and hot, but within 20 seconds of them been on they begin to blow cold. thanks for the reply
