Diagnostics
Evaporator Water | Chiller | Warning and | NonLatch | Evap pump | After flow had been proven the chilled water flow input | Remote |
Flow Lost Pump 1 |
| Special Action |
| commanded on | was open for more than 4 continuous seconds. The |
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(or Pump 2) |
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| evaporator pump control will switch control to the |
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| redundant pump. If redundant pump is not available, |
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| diagnostic will clear when flow is established. |
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Evaporator Water | Chiller | Warning and | NonLatch | Estab. Evap. Water | Evaporator water flow was not proven within a user | Remote |
Flow Overdue |
| Special Action |
| Flow on going from | adjustable time of the evaporator water pump relay being |
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Pump 1 (or |
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| STOP to AUTO. | energized. Diagnostic is reset with return of evaporator |
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Pump 2) |
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| water flow. |
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Fault Detected: | Chiller | Warning and | NonLatch | All | Detection of a pump fault will cause pump control to | Remote |
Evaporator Water |
| Special Action |
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| switch to the redundant pump. |
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Pump 1 (or |
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Pump 2) |
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Condenser Water | Chiller | Warning and | NonLatch | Start and All Run | After flow had been proven the condenser water flow | Remote |
Flow Lost Pump 1 |
| Special Action |
| Modes | input was open for more than 4 continuous seconds. This |
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(or Pump 2) |
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| diagnostic is automatically cleared once all circuits are de- |
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| energized. |
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Condenser Water | Chiller | Warning and | NonLatch | Estab Cond Water | Condenser water flow was not proven within a user | Remote |
Flow Overdue |
| Special Action |
| Flow | adjustable time of the condenser water pump relay being |
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Pump 1 (or |
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| energized. |
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Pump 2) |
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Fault Detected: | Chiller | Warning and | NonLatch | All | Detection of a pump fault will cause pump control to | Remote |
Condenser Water |
| Special Action |
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| switch to the redundant pump. |
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Pump 1 (or |
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Pump 2) |
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Fan Fault | Circuit | Warning | NonLatch | All | The fan fault input was open for more than 5 seconds. | Local |
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High Condensing | Chiller | Warning | Latch | Running | When running in parallel pump control, with one pump | Remote |
Pressure Pump |
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| on, a high condensing pressure will force add the second |
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Add |
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| pump. It will latch on to prevent pump cycling. |
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28 |
