# Blinking cyan with Photon **URL:** \ **Category:** Troubleshooting\ **Created:** [September 8, 2015, 4:12pm UTC](https://community.particle.io/t/blinking-cyan-with-photon/15220 "2015-09-08T16:12:19Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![Jseiler](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/jseiler/32/6428_2.png) [@Jseiler](https://community.particle.io/u/Jseiler)\ **Post date:** [September 8, 2015, 5:43pm UTC](https://community.particle.io/t/blinking-cyan-with-photon/15220/2 "2015-09-08T17:43:56Z")
When you say blinking cyan, do you mean blinking rapidly as during the handshake portion of the cloud connection? This issue may be related to this post and still under investigation afaik. > [@System.sleep not working on Photon as documented-known bug?](https://community.particle.io/t/system-sleep-not-working-on-photon-as-documented-known-bug/15181): > > I am trying to use the SparkFun Weather Shield in a solar powered deployment where conservation of power is critical. I don’t want to use the deep sleep mode as I want to continue to collect average rain fall and wind data between uploads. So I have tried to use System.sleep(long seconds); to turn off WiFi to conserve power. However, if I set System.sleep(5) for example (the Photon should sleep for 5 seconds) it goes to sleep with a white light on the led (not flashing green as per the document… --- _[View the full topic](https://community.particle.io/t/blinking-cyan-with-photon/15220)._