| Pressure indication of manifold gauge |
| 1. |
Low-pressure side is too low |
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Moisture in the A/C system. |
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| 2. |
Both high-pressure and low-pressure sides are too low |
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Refrigerant amount is insufficient. |
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Refrigerant leakage. |
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| 3. |
Both high-pressure and low-pressure sides are too high |
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Excessive refrigerant , |
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Condenser is not cooling sufficiently. |
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| 4. |
High-pressure side is too low and low-pressure side is too high |
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A/C compressor is defective. |
