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Last seen: Sep 18, 2026
We said black because all the other trunking for HP and Air Con is black.
Vaillant called today and have now changed the inverter. So all 3 components changed (control board, harness and inverter). They also checked the AC ...
As expected it failed to run late yesterday with the same fault codes. So inverter to be changed on monday.
I would say a medium company of around 20/30 employees.
Installer called this morning and has move the 2 cables 120mm apart. System has been started and switched off 3 times and its working. So now in mon...
Not my area of expertise, but it was measured between the plus and minus of the EBUS cable to Earth. Cant remember if it was AC or DC, but I think AC....
The manufacturer should specify a screened EBUS cable (IMHO).
Myself I don't believe that it's an induced voltage in the EBUS. The installer is coming Thursday to reroute the cable.
Vaillant engineer arrived today. He change the control board and harness for the compressor. This did not fix the problem. So next step is for the ...
Yes have checked the outside unit is on and has 253 volts (yes 253 volts right on the national grid limit).
The installer has just called and noted an error code of F.753, which means there is fault with the outside unit (communication has been lost between ...
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