Cool, thanks guys.
Not really sure what tests to do next? I guess my main test is to try to get the one marked in BLUE on my diagram working and when that works I can the reintroduce the others?
Ok... the Boiler starting readings are as follows:
t1, then a number, e.g 67. This is the flow temperature. 55
t2, then a number, e.g 44. This is the return temperature. 56
t3, then a number, e.g 55. This is the hot water temperature. --
t4, then --. This is the outside temperature, which requires an outside sensor. Don't worry about it. Yes it's --
Press + again and you will see FL, then, e.g 7.6. This is the ionisation current. Not important. 0.0
Press + again and you will see nF, the, e.g 22. This is the fan speed, which determines the boiler output, It will vary between 13 and 50 (CH) or 67 (DHW). 0
After it's been on for 5 mins of CH the readings are as follows:
t1, then a number, e.g 67. This is the flow temperature. 71
t2, then a number, e.g 44. This is the return temperature. 69
t3, then a number, e.g 55. This is the hot water temperature. --
t4, then --. This is the outside temperature, which requires an outside sensor. Don't worry about it. Yes it's --
Press + again and you will see FL, then, e.g 7.6. This is the ionisation current. Not important. 0.0
Press + again and you will see nF, the, e.g 22. This is the fan speed, which determines the boiler output, It will vary between 13 and 50 (CH) or 67 (DHW). 0
After 10 minutes of CH:
t1, then a number, e.g 67. This is the flow temperature. 78
t2, then a number, e.g 44. This is the return temperature. 77
t3, then a number, e.g 55. This is the hot water temperature. --
t4, then --. This is the outside temperature, which requires an outside sensor. Don't worry about it. Yes it's --
Press + again and you will see FL, then, e.g 7.6. This is the ionisation current. Not important. 0.0
Press + again and you will see nF, the, e.g 22. This is the fan speed, which determines the boiler output, It will vary between 13 and 50 (CH) or 67 (DHW). 0
I notice that nF is NOT "between 13 and 50 (CH) or 67 (DHW)" as you mentioned. Is this the issue?
Update....
Switched on the rad marked in the diagram as RED and I got this...
t1, then a number, e.g 67. This is the flow temperature. 68
t2, then a number, e.g 44. This is the return temperature. 66
t3, then a number, e.g 55. This is the hot water temperature. --
t4, then --. This is the outside temperature, which requires an outside sensor. Don't worry about it. Yes it's --
Press + again and you will see FL, then, e.g 7.6. This is the ionisation current. Not important. 8.1
Press + again and you will see nF, the, e.g 22. This is the fan speed, which determines the boiler output, It will vary between 13 and 50 (CH) or 67 (DHW). 15
Update...
Since it's been on, my DHW (out of the tap) has gone about 10-20 hotter. It's BOILING hot right now!