Trane S*HF*20-75 Troubleshooting Manual page 31

Ckt 1 Compr Relay
Enabled
Note: There will be 2 screens shown for the configuration, one for
K11 and one for K12.
• Press Next/Previous keys to navigate.
Ckt 2 Compr Relay
Enabled
Note: There will be 2 screens shown for the configuration, one for
K3 and one for K4.
Table 4. Compressor Lockout Sources
Value Displayed in Bottom Field
Disabled By Compressor Protection..................................... Compressor proving input did not close.
Disabled By Contactor Failure ............................................ Compressor proving input stuck closed.
Disabled By Low Pressure Cutout ....................................... Low pressure cutout input to MCM.
Disabled By Bad Cond Temp Sensor.................................... Temp sensor is out of range.
Disabled By Demand Limit................................................. From GBAS or BAS/Network.
Disabled By Frost Protection .............................................. Leaving evap temp. < coil frost setpoint.
Disabled By BAS/Network Lockout ...................................... BAS demand or capacity limited.
Disabled By Minimum Off Time........................................... 3 minutes.
Disabled By Low Ambient Lockout ...................................... Ambient temp. < Low Ambient Lockout Stpt.
Disabled By Ventilation Override ........................................ Source is VOM input A-E, or BAS/Network.
Disabled By LPC Delay ...................................................... 3 minutes.
Disabled By Water Flow Status........................................... Evap. condenser water flow failure.
Disabled By Cond Coil Purge Request .................................. Dehumidification coil purge mode.
Disabled By Sump Temp Sensor Fail ................................... Evap. condenser sump water temperature.
Disabled By Low Refrig Charge........................................... Evap. temp. difference exceeded for 10 min.
Disabled By Evap Temp Sensor Fail .................................... Entering or leaving temp. sensor(s) failed.
Disabled By Sump Min Level Sensor Fail .............................. Evap. condenser min level switch failed.
Disabled By Sump Pump Failure ......................................... Evap. condenser pump proving failed.
Disabled By Sump Min Level Control ................................... Evap. condenser water level marginal.
• Press Next/Previous keys to navigate.
RT-SVP07B-EN
K11:
K3:
Used With: IPakII DX Cooling
OFF
Possible Values:
Compressor Relay:
st
K11: 1 Compressor
nd
K12: 2 Compressor
Top Right Field:
ON, OFF, LOCKED
Bottom Field:
When ON or OFF is Shown: ENABLED
When LOCKED is Shown:
[See "Table 4. Compressor Lockout
Sources" Below]
Used With: IPakII DX Cooling
ON
Possible Values: Possible Values:
Compressor Relay:
rd
K3: 3 Compressor
th
K4: 4 Compressor
Top Right Field:
ON, OFF, LOCKED
Bottom Field:
When ON or OFF is Shown: ENABLED
When LOCKED is Shown:
[See "Table 4. Compressor Lockout
Sources" Below]
Lockout Conditions
STATUS Menu
31