Hi. Had a strange problem with my hot water controller, when it reaches the required time to switch on, you hear an audible 'click', the red light comes on, then immediately it clicks off again. It continues to do this for the whole duration of the 'on' period. If you select Manual ON or +1HR it just clicks on then off immediately. The only way to get hot water is to turn the valve manually, at which point the system kicks in and heats the water up.
I have checked the motorised valve which is fine (swapped it with the CH valve). The hot water tank thermostat also seems fine (I shorted the terminals to make sure the break on heat rise switch was working). Is it likely to be the controller itself? Do these things fail like this? Does it have some form of relay inside which switches the motor valve? A replacement doesn't seem to be too expensive so I was planning to replace it to try...
Any advice?
Many Thanks!
I have checked the motorised valve which is fine (swapped it with the CH valve). The hot water tank thermostat also seems fine (I shorted the terminals to make sure the break on heat rise switch was working). Is it likely to be the controller itself? Do these things fail like this? Does it have some form of relay inside which switches the motor valve? A replacement doesn't seem to be too expensive so I was planning to replace it to try...
Any advice?
Many Thanks!