B
Bunker
HW light on permanently:
Shut mains off, no change.
Changed out the flow sensor - no change.
Swapped out the store thermister with 4 different ones I had including Grant ones - no change.
Put a new PCB on, no change - aaaarrrggghhh!!
Even though HWOS sell the thermisters as being for tank or boiler - I found the manual shows them as different - black sleeving for boiler, white for tank (same as Grant).
So Ill check with them tomorrow but the only one I didnt appear to have was a white Firebird thermister so must be that despite HWOS description.
In the short term I took the HW link out from the 4 pin plug and installed a switch so they could select HW or CH but not both.....
Shut mains off, no change.
Changed out the flow sensor - no change.
Swapped out the store thermister with 4 different ones I had including Grant ones - no change.
Put a new PCB on, no change - aaaarrrggghhh!!
Even though HWOS sell the thermisters as being for tank or boiler - I found the manual shows them as different - black sleeving for boiler, white for tank (same as Grant).
So Ill check with them tomorrow but the only one I didnt appear to have was a white Firebird thermister so must be that despite HWOS description.
In the short term I took the HW link out from the 4 pin plug and installed a switch so they could select HW or CH but not both.....