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Hello, thanks for using this service I will be assisting you today. When you respond to me sometimes it may take me a bit to respond back as I am researching your issue and it takes time to type so please be patient.
When you say it crashed what has happened exactly?
Ok that is a ZONE 2 temp sensor error, the sensor is reading shorted or open. You need to check the sensor and the wiring to the sensor you may have knocked something loos or created a bad connection to the controller. Check that and hopefully the sensor is still fine it may just be a loose connection.
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So what code do you have on it now?
Do you have a volt meter?
OK and it is saying DX coil sensor? Also can you shut the power off to the system for 1 full minute...maybe you just need to reboot it.
What were you exactly doing when all this started?
Ok no problem, I fully understand thanks for trying this service