15.3Abnormalities When Performing The STP Pump Start Operation
(When any "Abnormality/Error Warning" lamp lights, see Section 15.5 "When Any Abnormality/Error Warning Lamp Lights.")
Table 15.2 Troubleshooting When Performing The STP Pump Start Operation
No. | Symptom | Probable Cause | Countermeasures | Referred Section | |
１ | The "ACCELERATION" | (1) | TB3 | When this function | 8.2 |
| lamp does not light. |
| INHIBIT (5) - | is not used, short the |
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| (7) for | circuit between |
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| Rotation | terminals (5) - (7). |
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| INHIBIT | If these terminals |
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| Signal Input | are opened, the STP |
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| are opened. | pump will not rotate |
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| after performing |
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| start operation. |
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| (2) | The | Slide the "MANUAL/ | 4.1.2 |
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| "MANUAL/R | REMOTE" | 5.5 |
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| EMOTE" | changeover switch | 5.6 |
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| changeover | on the rear panel of |
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| switch is not | the STP control unit |
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| in the correct | to the correct |
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| position. | position. |
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| (3) | Blown fuses | Replace the blown | 4.1.3 |
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| F11, 12 (only | fuses (250 V, 0.1 A). | 8.4 |
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| REMOTE |
| 12.3 |
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| operation). |
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15.4Abnormalities While the STP Pump is Rotating
(When any "Abnormality/Error Warning" lamp lights, see Section 15.5 "When Any Abnormality/Error Warning Lamp Lights.")
Table 15.3 Troubleshooting While the STP Pump Is Rotating
No. | Symptom |
| Probable Causes | Countermeasures | Referred |
| Section | ||||
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| |
1 | The "NORMAL | (1) | Insufficient pressure | Use the maximum | 3.3.4 |
| OPERATION |
| at the inlet port. | working pressure or less. | 16.1 |
| "lamp does not | (2) | Insufficient pressure | Use the allowable backing | 3.3.4 |
| light approx. 15 |
| at the outlet port. | pressure or less. | 16.1 |
| minutes after | (3) | Leakage of the piping | Check piping. | 3.3.4 |
| performing start |
| system. |
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| operation. | (4) | Failure in the | Check the auxiliary pump | 3.3 |
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| auxiliary pump. | for its capacity and | 16.1 |
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| START state. |
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| (use a pump with the |
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| recommended capacity or |
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| more). |
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| (5) | Incorrect connection of | Connect the motor | 4.4.2 |
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| the motor connection | connection cable correctly. |
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| cable. | If the cable connector is |
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| not locked, lock it |
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| securely. |
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