Hi,

I am trying to start up my brand new air-to-water Heat Pump, model WOYG 112 LCT, 3-phase type 50 Hz 400 V.
When I switch-on the indoor unit I keep getting the following message on the display:
State Heat Pump Fault
After pressing the information key, I get:
Error 516: Heat pump missing
I checked the outdoor unit which is also in error mode with the red LED blinking fast. When I press the ENTER switch, on the outdoor unit, the red LED blinks one time in 3 seconds, constantly.

I do not have detailed service documentation in order to interpret the state of the heat pump and proceed with startup.

How to proceed? Where can I find a detailed troubleshooting document describing this behaviour?

Thanks and regards
Milan