When I turn the hot water on it runs cold.CH is OK.Sometimes if I turn the boiler off then reset it again the water runs hot,but when I run it later on its cold.
I dont know what part that is but the diaghraphm alone can usually be replaced but its worth replacing the pin gland at the same time as these always leak.
Perfect timing......I have a leaking pin gland (the one which faces out from the boiler, which unless I'm barking is the DHW). So, can I just replace the gland or does the whole lot need changing.
....maybe a terminology thing. Temperature sensor, looked very like a thermocouple. That was boiler engineer fitted to fix the boiler cutting out over temp (I think, was a while ago).
If you need to find a tradesperson to get your job done, please try our local search below,
or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Please select a service and enter a location to continue...
Are you a trade or supplier? You can create your listing free at DIYnot Local