Trane CCUN 205-211 User Manual page 26

Evaporator Entering Water
Temp Sensor
Evaporator Leaving Water
Temp Sensor
Condenser Entering Water
Temp Sensor
Condenser Leaving Water
Temp Sensor
Discharge Pressure
Transducer
Suction Pressure Transducer
Suction Temperature Sensor
Evaporator Protection Water
Temp Sensor
Low Evap Leaving Water
Temp: Unit Off
Low Evap Leaving Water
Temp: Unit On
Low Refrigerant
Temperature
26
Diagnostics
Chiller Normal Latch
Chiller Normal Latch
Chiller Warning Latch
Chiller Warning Latch
Circuit Normal Latch
Circuit Immediate Latch
Circuit Normal Latch
Circuit Normal Latch
Chiller or Warning NonLatch
Circuit and Special
Action
Chiller or Immediate NonLatch
Circuit and Special
Action
Circuit Immediate Latch
All Bad Sensor or LLID
All Bad Sensor or LLID
All Bad Sensor or LLID
All Bad Sensor or LLID
All Bad Sensor or LLID
All Bad Sensor or LLID
All Bad Sensor or LLID
All Bad Sensor or LLID
Unit in Stop a) The leaving chilled water temperature fell below the leaving
Mode, or in water temp cutout setting for 16.6°C- seconds while the Chiller
Auto Mode is in the Stop mode, or in Auto mode with no compressors
and No running. Energize Evap Water pump Relay until diagnostic auto
Ckt(s) resets, then return to normal evap pump control. Automatic
Energized reset occurs when the temp rises 1.1°C above the cutout
[Any Ckt setting for 30 minutes. When this diagnostic is active AND
Energized] Leaving Water Temperature sensor diagnostic (loss of comm or
out of range) the Evap Water pump relay shall be de-energized.
b) If evaporator protection temperature sensors are installed,
the effect is on the appropriate circuit. Else, the effect is on the
chiller.
Any Ckt[s] a) The chilled water temperature fell below the cutout setpoint
Energized for 16.6°C-seconds while a compressor was running.
[No Ckt(s) Automatic reset occurs when the temperature rises 1.1°C
Energizd] above the cutout setting for 2 minutes. This diagnostic shall not
de-energize the Evaporator Water Pump Output. If this
diagnostic is active the Low Evap Leaving Water Temp: Unit Off
diagnostic shall be suppressed.
b) If evaporator protection temperature sensors are installed,
the effect is on the appropriate circuit. Else, the effect is on the
chiller.
All except The Evaporator Saturated Refrigerant Temperature dropped
[Service below the Low Refrigerant Temperature Cutout Setpoint for
Pumpdown] 16.6°C-seconds.
Remote
Remote
Remote
Remote
Remote
Remote
Remote
Remote
Remote
Remote
Local
CG-SVU02B-E4