Trane CCUN 205-211 User Manual Page 28

Chiller control system.
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Evaporator Water
Chiller
Flow Lost Pump 1
(or Pump 2)
Evaporator Water
Chiller
Flow Overdue
Pump 1 (or
Pump 2)
Fault Detected:
Chiller
Evaporator Water
Pump 1 (or
Pump 2)
Condenser Water
Chiller
Flow Lost Pump 1
(or Pump 2)
Condenser Water
Chiller
Flow Overdue
Pump 1 (or
Pump 2)
Fault Detected:
Chiller
Condenser Water
Pump 1 (or
Pump 2)
Fan Fault
Circuit
High Condensing
Chiller
Pressure Pump
Add
28
Diagnostics
Warning and
NonLatch
Special Action
Warning and
NonLatch
Special Action
Warning and
NonLatch
Special Action
Warning and
NonLatch
Special Action
Warning and
NonLatch
Special Action
Warning and
NonLatch
Special Action
Warning
NonLatch
Warning
Latch
Evap pump
After flow had been proven the chilled water flow input
commanded on
was open for more than 4 continuous seconds. The
evaporator pump control will switch control to the
redundant pump. If redundant pump is not available,
diagnostic will clear when flow is established.
Estab. Evap. Water
Evaporator water flow was not proven within a user
Flow on going from
adjustable time of the evaporator water pump relay being
STOP to AUTO.
energized. Diagnostic is reset with return of evaporator
water flow.
All
Detection of a pump fault will cause pump control to
switch to the redundant pump.
Start and All Run
After flow had been proven the condenser water flow
Modes
input was open for more than 4 continuous seconds. This
diagnostic is automatically cleared once all circuits are de-
energized.
Estab Cond Water
Condenser water flow was not proven within a user
Flow
adjustable time of the condenser water pump relay being
energized.
All
Detection of a pump fault will cause pump control to
switch to the redundant pump.
All
The fan fault input was open for more than 5 seconds.
Running
When running in parallel pump control, with one pump
on, a high condensing pressure will force add the second
pump. It will latch on to prevent pump cycling.
Remote
Remote
Remote
Remote
Remote
Remote
Local
Remote
CG-SVU02B-E4

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