Trane RTAC 140-400 ton units (50 HZ) User Manual
104
RTAC-SVX01F-EN
Controls Interface
Diagnostic Screen
The diagnostic screen (shown following) is accessible by either pressing the blinking
ALARMS key or by pressing the Diagnostic tab on the screen tab selection.
The diagnostic screen (shown following) is accessible by either pressing the blinking
ALARMS key or by pressing the Diagnostic tab on the screen tab selection.
A hex code and a verbal description appears on the display as shown typically above.
This is the last active diagnostic. Pressing the “Reset All Active Diagnostics” will
reset all active diagnostics regardless of type, machine or refrigerant circuit. Compres-
sor diagnostics, which hold off only one compressor, are treated as circuit diagnos-
This is the last active diagnostic. Pressing the “Reset All Active Diagnostics” will
reset all active diagnostics regardless of type, machine or refrigerant circuit. Compres-
sor diagnostics, which hold off only one compressor, are treated as circuit diagnos-
Comp 1A Pumpdown
Pumpdown/Abort
Text
Comp 1B Pumpdown
Pumpdown/Abort
Text
Comp 2A Pumpdown
Pumpdown/Abort
Text
Comp 2B Pumpdown
Pumpdown/Abort
Text
EXV Ckt 1 Open
Auto/Open
Text
EXV Ckt 2 Open
Auto/Open
Text
Front Panel Ckt 1 Lockout
Locked Out/Not Locked Out
Text
Front Panel Ckt 2 Lockout
Locked Out/Not Locked Out
Text
Ext Chilled Water Setpoint
X.X
F / C
Ext Current Limit Setpoint
XXX
% RLA
Date Format
mmm dd yyyy, dd mm yyyy
Text
Date
Text
Time Format
12 hr, 24 hr
Text
Time of Day
Text
Keypad/Display Lockout
Enable/Disable
Text
Display Units
SI, English
Text
Pressure Units
Absolute, Gauge
Text
Language Selection
Downloaded from TechView
Text
Table 31
Setpoint Screen
Description
Resolution or Text
Units
Table 32
Setpoint Options/Conditions Displayed
Option
Condition(s)
Explanation
Ice Building
Enable/Disable
If feature is installed, operation can be initiated or stopped
Cprsr Pumpdown
1
Avail
Pumpdown is allowed: only with unit in Stop or when circuit is locked out
Not Avail
Pumpdown is not allowed because unit is operating or pumpdown has been com-
pleted
pleted
Pumpdown
State is displayed while pumpdown is in progress
EXV Ckt Open
(For Authorized Service Use
Only
(For Authorized Service Use
Only
2
)
Avail
Indicates EXV is closed but can be opened manually since unit is in Stop or circuit
is locked out
is locked out
Not Avail
EXV is closed but cannot be opened manually since unit is operating
Open
State is displayed when EXV is open. Unit will not start with EXV manually set
open, but will initiate valve closure first.
open, but will initiate valve closure first.
Ckt Lockout
Locked Out
Circuit is locked out at Front Panel; other circuit may be available to run
Not Locked Out
Circuit is not locked out and is available to run
Ext. Chilled Water Setpt
Enable/Disable
Allows unit to control setpoint; otherwise another loop controller in line will con-
trol, as optionally wired.
trol, as optionally wired.
Ext. Current Limit Setpt
Enable/Disable
Allows unit to control setpoint; otherwise another loop controller in line will con-
trol, as optionally wired.
trol, as optionally wired.
Notes:
1
Pumpdown procedure are discussed in Maintenance section 10.
2
Used for liquid level control or to recover from pumpdown