Hi,
Looking for some help to diagnose a problem with our boilermate III. Ten days ago, we suddenly started getting problems with our hot water. You would get an initial burst of hot water for about 20 seconds, and then it would go cold and not heat up. The central heating is fine, and is unaffected.
We called out an engineer, and they said it was the blender, which they replaced. This made absolutly no difference. So they said they thought it was heat exchanger and have just replaced that, but the problem has not gone away. Although it is slightly different. You can now run the hot water tap at a low flow rate and it will maintain hot water, but as soon as you put a normal flow rate through it goes cold again. We've checked the PCB and there are no errors, and you see the DHW temp plummet from mid 50's down to 20's when the tap is turned on. Don't think it is the sensor as you can hear the pump turn on. This just doesn't seem to make any difference.
The latest idea from the engineer is that it is sludge causing the problem. Do you think this likely? They are talking about flushing out the system, which I know is expensive.
Any advice you can give would be greatly received.
Thanks,
Rosie
Looking for some help to diagnose a problem with our boilermate III. Ten days ago, we suddenly started getting problems with our hot water. You would get an initial burst of hot water for about 20 seconds, and then it would go cold and not heat up. The central heating is fine, and is unaffected.
We called out an engineer, and they said it was the blender, which they replaced. This made absolutly no difference. So they said they thought it was heat exchanger and have just replaced that, but the problem has not gone away. Although it is slightly different. You can now run the hot water tap at a low flow rate and it will maintain hot water, but as soon as you put a normal flow rate through it goes cold again. We've checked the PCB and there are no errors, and you see the DHW temp plummet from mid 50's down to 20's when the tap is turned on. Don't think it is the sensor as you can hear the pump turn on. This just doesn't seem to make any difference.
The latest idea from the engineer is that it is sludge causing the problem. Do you think this likely? They are talking about flushing out the system, which I know is expensive.
Any advice you can give would be greatly received.
Thanks,
Rosie