Carrier 39L - Manual (Page 79)

Occupied Cooling (31) — Indicates that the unit is in the
Cooling mode to satisfy its Occupied Cooling set point.
Occupied Fan Only (32) — Indicates that the unit is main-
taining set point by using a mixture of outside and return air
only. No mechanical heating or cooling is being used.
Nighttime Free Cooling (33) — Indicates that the supply fan
is on and using outside air to precool the space served by the
unit. Unit must be configured for nighttime free cool-
ing ( ). (This mode is enabled by .)
Smoke Pressurization (34) — Indicates that the unit is in the
Pressurization mode. This mode is issued from the fire
system panel. Refer to Table 15 for the state of the items
controlled.
Smoke Evacuation (35) — Indicates that the unit is in the
Smoke Evacuation mode. This mode is issued from the
system panel. Refer to Table 15 for the state of the items
controlled.
Smoke Purge (36) — Indicates that the unit is in the Smoke
Purge mode. This mode is issued from the fire system panel.
Refer to Table 15 for the state of the items controlled.
Fire Shutdown (37) — Indicates that the unit is in the Fire
Shutdown mode. This mode is issued from the fire system
panel or local smoke detector. Refer to Table 15 for the state
of the items controlled.
Quick Test (38) — Indicates that the unit is in the Quick Test
mode. It allows the user to test all inputs and outputs con-
nected to the PIC controller. All control routines are deac-
tivated when the unit is in this mode. This mode can only be
initiated manually when the supply fan status is OFF. (HOA
switch is in OFF position.) In order to reactivate all
the configured control routines, press
and then press
.
Timed Override (39) — Indicates that the unit operation has
been extended by the user. Unit must be configured for
Timed Override schedule and timed override hours ( ).
Table 14 — Display Codes
FORCE STATES
Display Description
1 Fire mode force
2 Internal safety force
3 Quick Test/Service tool force
4 HSIO/Building Supervisor force
5 Remote Building Supervisor force
6 Loadshed minimum offtime force
7 Data transfer force
8 BEST (Building Environmental Systems
Translator) force
9 Temperature override force
10 Loadshed force
OPERATING MODES
Display Description
21 Temperature Reset in effect
22 Demand Limit in effect
23 Unoccupied Heating mode
24 Unoccupied Cooling mode
26 Optimal Start mode
27 Unoccupied mode
29 Optimal Stop mode
30 Occupied Heating mode
31 Occupied Cooling mode
32 Occupied Fan Only mode
33 Nighttime Free Cooling mode
34 Pressurization mode
35 Evacuation mode
36 Smoke Purge mode
37 Fire Shutdown mode
38 Quick Test mode
39 Timed Override mode
ALARMS
Display Description
60 Air quality 1 high limit
61 Air quality 2 high limit
62 Air quality/constant outside air suspended
63 (Not used)
64 DX cooling shutdown
65 Pressurization
66 Evacuation
67 Smoke purge
68 Fire shutdown
69 Service/maintenance required
70 Linkage failure
71 Space temperature low limit
72 Space temperature high limit
73 Supply-air temperature low limit
74 Supply-air temperature high limit
75 Return-air temperature low limit
76 Return-air temperature high limit
77 Mixed-air temperature low limit
78 Mixed-air temperature high limit
79 Outside-air temperature low limit
80 Outside-air temperature high limit
81 Static pressure low limit
82 Static pressure high limit
83 Relative humidity low limit
84 Relative humidity high limit
85 Fan status
86 Freezestat
87 Analog temperature control sensor low limit
88 Analog temperature control sensor high limit
89 Outside-air relative humidity low limit
90 Outside-air relative humidity high limit
91 Supply velocity pressure low limit
92 Supply velocity pressure high limit
93 Return velocity pressure low limit
94 Return velocity pressure high limit
95 Delta CCFM low limit
96 Delta CCFM high limit
97 Filter status
98 Duct high humidity
CCFM — Cfm x 100
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