8.2.1 Venting the charge circuit and the collector with the built-in pump of the device
Once the system is vented using external equipment, venting can be completed with the internal pumps of the heat pump. Especially the collector must be vented with extreme care. If there is even a small amount of air in the collector, the device will not operate optimally and may malfunction.
Start the pumps from the service menu in the controller’s user interface, under Function testing. To log into the service level, press the knob for 3 seconds and enter code 2000.
The charge circuit is vented with the charge pump. Go to Charge pump and increase the pump speed to facilitate venting.
Under Change-over valve, you can also toggle the valve position between On and Off a few times. This removes air from the charging coil.
The collector is vented with the source pump. Go to Source pump and increase the pump speed to facilitate venting.
Start with a low setting and increase the speed slowly.