| The refrigerant circuit may start leaking because of external damage. Because of the small amount of leaked refrigerant, evidence of minor leaks can be detected for example with an electronic leak detector or leak detection additive which is filled into the refrigerant circuit. Leaks with less than 5 grams of refrigerant loss per year can be detected with the electronic leak detector. |
| For the different refrigerants, leak detectors are used which are designed for the composition of the relevant refrigerant. For example, leak detectors for refrigerant R12 are not suitable for R134a, the refrigerant R134a has no chlorine atoms, this is why these leak detectors do not respond. |
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