AA=28 Return Water Temperature
Posted: Saturday 14 January 2017 15:59
Gents,
Very strange thing happened. After I replaced the transformer for a 2-VA insteand of the 1,5 VA and also replaced the 7805 to the better DC / DC converter everything works fine but:
When I send the AA=28 command, the log confirms the message but the return water temp stays 0 degrees. Before the above change this worked perfectly well???
Same for the MAX_CH Water setpoint. Before the chnage I set it to 75 degrees and this worked. Now it stays on 80 degrees.
Any idea what could have happened?...I resetted the OTGW a couple of times but this didn't help...I also played with the voltage reference. In the old setup I had to set it to VR=1. Now I can set it to either 1, 2 or 3. Doesn't matter and I have no error messages.
thx in advance
willem
Very strange thing happened. After I replaced the transformer for a 2-VA insteand of the 1,5 VA and also replaced the 7805 to the better DC / DC converter everything works fine but:
When I send the AA=28 command, the log confirms the message but the return water temp stays 0 degrees. Before the above change this worked perfectly well???
Same for the MAX_CH Water setpoint. Before the chnage I set it to 75 degrees and this worked. Now it stays on 80 degrees.
Any idea what could have happened?...I resetted the OTGW a couple of times but this didn't help...I also played with the voltage reference. In the old setup I had to set it to VR=1. Now I can set it to either 1, 2 or 3. Doesn't matter and I have no error messages.
thx in advance
willem