Surya Yantra should be installed and worshipped when the planet Sun is malefic in the Birth Chart of a person. As per Ancient Vedic Texts, the Planet Sun is considered as the king of all planets. In fact, Sun is not a planet but it is a star because it is self illuminated. All the other planets including earth revolve around the Sun. Sun represents our Soul, Father, Power, Health, Fame, Government, Medicine, Gold, Bones, Fire as well as government jobs.
A person with a powerful Sun in his horoscope is always able to achieve very good name and fame in his life. Normally he is in a government department at some high administrative post or he is at some managerial level in some big private company. Apart from this a person can be a successful politician. A person who is a good Jewelers , grain merchant or involved in his father’s business also indicates a powerful Sun in his horoscope. A person with a weak or malefic Sun in his horoscope suffers from diseases related to head and brain, heart, indigestion, eyes, sun stroke as well as bones especially those related to spinal chord as well as frequent fractures. Such a person is unable to achieve good name and fame in his life.
The planet Sun represents power, authority and government. In case, if a person is deprived of happiness due to termination of service especially the govt. job, suspension orders or is being harassed by his enemies or diseases then worshipping a Surya Yantra can be very helpful for attaining Peace, Prosperity and Happiness.