Cocoon Cooltech - Return Tubes Blocking

Return tubes blocking in step 4
If the air leak has stopped, the problem has been in the plastic fitting, proceed to the replacement as
explained in step 2.
If the problem persists move to step 5:
Step 5
Block the tube just before the vacuum sensor, in this case the tested component is only the sensor.
So if the error persists, change the CPU. But if the leak disappeared the problema has been in
Electro-valve 1 (EV1) which does not close correctly.
To replace a solenoid valve follow the recommendations: