'Set new target temperature.'

def set_operation_mode(self, operation_mode):

    set_req = self.gateway.const.SetReq
    self.gateway.set_child_value(self.node_id, self.child_id, set_req.V_HVAC_FLOW_STATE, DICT_HA_TO_MYS[operation_mode])
    if self.gateway.optimistic:
        self._values[set_req.V_HVAC_FLOW_STATE] = operation_mode
        self.schedule_update_ha_state()
