The Units discontinue after the operation started
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| WHAT TROUBLED | COMPLAINTS | HOW TO CHECK | REMEDY |
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| Other parts than the unit | Improper opening of the | Checking | Open it properly | |
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| service valves in the |
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| refrigerant line |
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| Outdoor coil | Coil is dirty *1 | Checking | Wash it by means of | |
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| something like chemical | |
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| washing. | |
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| Air intruded into the | In the event that | Extract air by vacuum | ||
| blended. | refrigerant pipe line *1 | difference between the | pump, then recharge the | |
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| saturating temperature | refrigerant. | |
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| corresponding to high |
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| pressure and the |
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| temperature of air |
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| discharged from the |
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| outdoor coil is more than |
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| 15°C, incondensable gas |
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| may be blended. |
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| High pressure switch | Improper adjustment | Check it with a pressure | Readjust it to normal | |
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| gauge. | operating pressure. | |
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| (Note) | |
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| Don't alternate the | |
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| specified adjusting | |
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| pressure. If the adjusted | |
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| pressure exceeds the | |
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| specified range, it will | |
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| cause a great accident. | |
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| Refrigerant | A shortage of refrigerant |
| Recharge the | |
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| amount. * 2 |
| refrigerant. Repair the | |
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| spot where it leaks. | |
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| Outdoor Fan | Reverse rotation of fan | Confirm the wind blowing | If reversed, connect | |
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| Obstacle | out. | interchanged wires to | |
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| Air short circuit *1 | Check it with eyes. | each terminal. | |
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| Power wirings. | ||
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Note: Use an appropriate measuring instrument for readjustment. *1: Check the
*2: Check the Low- pressure switch indication.
