Carrier 19XL User Manual
Page 27
Table 2 — LID Screens (cont)
EXAMPLE 12 — MAINTENANCE (MAINT03) DISPLAY SCREEN
To access this display from the LID default screen:
1. Press
MENU
.
2. Press SERVICE .
3. Scroll down to highlight CONTROL ALGORITHM STATUS.
4. Press SELECT .
5. Scroll down to highlight MAINT03.
6. Press SELECT .
DESCRIPTION
RANGE/STATUS
UNITS
REFERENCE POINT NAME
SURGE/HGBP ACTIVE ?
NO/YES
Active Delta P
0-200 (0-1379)
PSI (kPa)
dp
a
Active Delta T
0-200 (0-111)
DEG F (DEG C)
dt
a
Calculated Delta T
0-200 (0-111)
DEG F (DEG C)
dt
c
Surge Protection Counts
0-12
spc
NOTE: Override is not supported on this maintenance screen. Only values with capital letter reference point names are variables available for read
operation.
EXAMPLE 13 — MAINTENANCE (MAINT04 DISPLAY SCREEN
To access this display from the LID default screen:
1. Press
MENU
.
2. Press SERVICE .
3. Scroll down to highlight CONTROL ALGORITHM STATUS.
4. Press SELECT .
5. Scroll down to highlight MAINT04.
6. Press SELECT .
DESCRIPTION
RANGE/STATUS
UNITS
REFERENCE POINT NAME
LEAD/LAG: Configuration
DISABLE,LEAD,LAG,STANDBY, INVALID
leadlag
Current Mode
DISABLE,LEAD,LAG,STANDBY, CONFIG
llmode
Load Balance Option
DISABLE/ENABLE
loadbal
LAG Start Time
0-60
MIN
lagstart
LAG Stop Time
0-60
MIN
lagstop
Prestart Fault Time
0-30
MIN
preflt
Pulldown: Delta T/Min
2-10 F/min (1.1-5.5 C/min)
⌬
DEG F/min
pull
dt
Satisfied?
No/Yes
(
⌬
DEG C/min)
pull
sat
LEAD CHILLER in Control
No/Yes
leadctrl
LAG CHILLER: Mode
Reset,Off,Local,CCN
lagmode
Run Status
Timeout,Recycle,Startup,Ramping,Running
Demand,Override,Shutdown,Abnormal,Pumpdown
lagstat
Start/Stop
Stop,Start,Retain
lag
s
s
Recovery Start Request
No/Yes
lag
rec
STANDBY CHILLER: Mode
Reset,Off,Local,CCN
stdmode
Run Status
Timeout,Recycle,Startup,Ramping,Running
Demand,Override,Shutdown,Abnormal,Pumpdown
stdstat
Start/Stop
Stop,Start,Retain
std
s
s
Recovery Start Request
No/Yes
std
rec
NOTES:
1. Only values with capital letter reference point names are variables available for read operation. Forcing is not supported on this maintenance
screen.
2. The MAINT04 screen is available on PSIO Software Version 09 and higher.
3.
⌬
= delta degrees.
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