Valeo REVO-E, Workshop Manual

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REVO-E Heat pump 4 Function and functional schematics
This mode is only available with the REVO-E HP + (addi-
tional solenoid valve) and allows the use of the system up
to an outside temperature of -5°C.
For component safety, the SC620 starts the De-Icing
Mode each time before starting the heat pump function.
Furthermore, the de-icing is activated after one hour Heat
Pump Mode and takes between 2 min and 15 min depen-
ding on the degree of icing of the outer heat exchanger.
In order to use the necessary energy for the fastest
possible de-icing, the double radial blowers are switched
off during this time.
The BEA body control is informed via CAN from the
SC620 about the mode and heats the passenger compart-
ment via the floor heating circuit.
4.4.7 Operating Mode Oil Recovering
(Version HP+ only)
Serves to protect the compressor.
After approx. 4 hours in heat pump mode, the ADA
switches to the oil return mode. The refrigeration oil
distributed in the ADA is thus returned to the compressor.