A method for controlling a vapour compression system, the vapour compression system comprising a compressor, a condenser, an expansion valve, an evaporator arranged in a refrigerant path, the refrigerant path defining a suction line interconnecting an outlet of the evaporator and an inlet of the compressor, the method comprising the steps of: - obtaining a superheat value of refrigerant leaving the evaporator and entering the suction line, - obtaining a suction pressure of refrigerant flowing in the suction line, - in the case that the obtained superheat value is below a lower threshold superheat value, requesting that the expansion valve is operated according to a first control strategy, in which the expansion valve is closed until the superheat value has increased above the lower threshold superheat value, characterized in that the method further comprising the steps of: - in the case that the obtained suction pressure is below a lower threshold suction pressure value, requesting that the expansion valve is operated according to a second control strategy, in which the expansion valve is kept open until the suction pressure has increased above the lower threshold suction pressure value, - in the case that only the first control strategy or only the second control strategy is requested, selecting the requested control strategy, and - in the case that the first control strategy as well as the second control strategy is requested, selecting the second control strategy for a period of time which does not exceed a predefined maximum period of time. - obtaining a superheat value of refrigerant leaving the evaporator and entering the suction line, - obtaining a suction pressure of refrigerant flowing in the suction line, - in the case that the obtained superheat value is below a lower threshold superheat value, requesting that the expansion valve is operated according to a first control strategy, in which the expansion valve is closed until the superheat value has increased above the lower threshold superheat value, characterized in that the method further comprising the steps of: - in the case that the obtained suction pressure is below a lower threshold suction pressure value, requesting that the expansion valve is operated according to a second control strategy, in which the expansion valve is kept open until the suction pressure has increased above the lower threshold suction pressure value, - in the case that only the first control strategy or only the second control strategy is requested, selecting the requested control strategy, and - in the case that the first control strategy as well as the second control strategy is requested, selecting the second control strategy for a period of time which does not exceed a predefined maximum period of time. - in the case that the obtained suction pressure is below a lower threshold suction pressure value, requesting that the expansion valve is operated according to a second control strategy, in which the expansion valve is kept open until the suction pressure has increased above the lower threshold suction pressure value, - in the case that only the first control strategy or only the second control strategy is requested, selecting the requested control strategy, and - in the case that the first control strategy as well as the second control strategy is requested, selecting the second control strategy for a period of time which does not exceed a predefined maximum period of time.