<e>Database Error; SQL: SELECT
                
                DISTINCT
                `t`.*
                FROM `vo_pods_calculator_data_heating` AS `t`
                
                WHERE ( max_power=0 AND min_power= AND room_type='' AND voltage LIKE '%%' )
                
                
                ORDER BY `t`.`name`, `t`.`id`
                LIMIT 0, 15; Response: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AND room_type='' AND voltage LIKE '%%' )
                
                
     ' at line 7</e>