Thank you for your post.
Without knowing the model of projector it will be difficult to give specifics, however the LED blinking sequence you have provided can help guide us a little.
The LED sequence suggests there is an issue with the lamp. Are you able to try another known working lamp in the projector, possibly temporarily take one from another projector to try?
To guide you in how to replace your lamp please visit:
Search for the model of your projector and there should be a help guide to show you how to replace the lamp.
See how you get on and if this doesn’t resolve the issue please get back to us with the model and serial number and we can look into this further for you.