I'm working on this project and my goal is to integrate a GSM module with this project. I have implemented the actual project but i'm unable to add a gsm module to it as i have never done using an arduino and i'm having a hard time figuring out the mechanism. My idea is to use the exact code (Basically copy and paste the main gsm code with the fault detection code ) in a way whenever the fault occurs it enters the gsm function and sends the message(I'm aware that i need to change the message so it shows what my LCD will show). But i'm having a hard time implementing it as my knowledge in embedded system coding in limited as it is barely tough in our College 
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I'd really appreciate if someone can help me with this.