Hi all
I finally gave in with the VRT392f controls on this brilliant boiler and have had the above wireless programmable room stat fitted. My wife couldn't adjust the Vaillant controls and would light a fire to keep warm if l was out!
BUT now it's all fitted it doesn't work
Fault code F49 comes up
From others on here it seems that is either Short circuit on the eBUS, eBUS overload or two power supplies with different polarities on the eBUS
The boiler runs fine with all controls switched off on the boiler stat only
Can anybody confirm what the connections should be and what links should be left in place
Heatmiser say our RF-Switch requires a 230v supply for power your wire from the COM and the NO back to your room stat connections on the boiler. Whatever voltage supplied from the boiler into COM on the RF-Switch will be switched out of NO when a demand for heat is made.
The COM goes to negative on EBUS and NO1 goes to positive on EBUS on the boiler
I have left the two links that were there with the Vaillant controls, one across the 24V RT block and also one across the Burner off block.
Can somebody guide me on how to remedy this, and if the existing connections are correct, is the Heatmiser kit defective
Thanks for all advice
I finally gave in with the VRT392f controls on this brilliant boiler and have had the above wireless programmable room stat fitted. My wife couldn't adjust the Vaillant controls and would light a fire to keep warm if l was out!
BUT now it's all fitted it doesn't work
Fault code F49 comes up
From others on here it seems that is either Short circuit on the eBUS, eBUS overload or two power supplies with different polarities on the eBUS
The boiler runs fine with all controls switched off on the boiler stat only
Can anybody confirm what the connections should be and what links should be left in place
Heatmiser say our RF-Switch requires a 230v supply for power your wire from the COM and the NO back to your room stat connections on the boiler. Whatever voltage supplied from the boiler into COM on the RF-Switch will be switched out of NO when a demand for heat is made.
The COM goes to negative on EBUS and NO1 goes to positive on EBUS on the boiler
I have left the two links that were there with the Vaillant controls, one across the 24V RT block and also one across the Burner off block.
Can somebody guide me on how to remedy this, and if the existing connections are correct, is the Heatmiser kit defective
Thanks for all advice