Carrier 50FC - Fan and Air Duct Checks; Axial Fan Checks; EC Plug-Fan Checks; Centrifugal Fan Pulley and Belt Calibration

27
12 - ALARMS
(*) If a certain number of alarms take place over a period of time, this reset can be changed to “Manual” (confi gurable by parameters).
(**) Alarm levels with “Backup”. Please refer to the meaning in the following section.
Controlled alarms Unit
shutdown
Aff ected circ.
shutdown
Reset
Type
Timing Actuation Alarm
level (**)
Graphic
terminal
User
terminal
Add.
Gas burner or boiler Yes
Yes,
all circuits
Auto (*) Yes, 4 s
Only indication (safety into the
burner/boiler)
Unit / compressor shutdown
(confi gurable by parameter)
Locking by repeated alarms
3 or 2 AL24 AL24 44
Thermistor of electrical heater for preheating
in the fresh air
No No Auto (*)
Yes,14 s
(progr.)
Shutdown of electrical heater for
preheating in the fresh air
3 AL24a AL2401 297
Blocking the electrical heating contactor Yes Yes Manual No
Unit shutdown and ventilation
mode at maximum fl ow
3 AL24b AL2402 354
Failure of Eprom memory of the PC3 board No No Manual No Serious alarm
3
AL26 AL26 32
Failure of Eprom memory of the SMALL board
(zoning)
No No Manual No Serious alarm, but only indication 1 AL26zn ---
PC3 board clock missing or not working No No Manual No Only indication 1 AL27 AL27 33
SMALL board clock missing or not working
(zoning)
No No Manual No Only indication 0 AL27zn ---
unit maintenance (cumulative operating hours) No No Manual No Only indication 3 or 1 AL28 AL28 108
Failure of return temperature probe Yes Yes Manual No Serious alarm, unit shutdown 0 AL29 AL29 109
Failure of ambient humidity probe No.1 No No Auto
Yes,10 s
(progr.)
Only indication 0 AL30a AL3001 165
RS485 probe No.1 without communication No No Auto
Yes,
10 s
Only indication
Stop zone 1 (air fl ow zoning)
0 AL30b AL3002 163
Failure of ambient temperature probe No.1 No No Auto
Yes,10 s
(progr.)
Only indication
Stop zone 1 (air fl ow zoning)
0 AL30c AL3003 164
Failure of ambient humidity probe No.2 No No Auto
Yes,
10 s
(progr.)
Only indication 0 AL30d AL3004 177
RS485 probe No.2 without communication No No Auto
Yes,
10 s
Only indication
Stop zone 2 (air fl ow zoning)
0 AL30e AL3005 175
Failure of ambient temperature probe No.2 No No Auto
Yes,10 s
(progr.)
Only indication
Stop zone 2 (air fl ow zoning)
0 AL30f AL3006 176
Failure of ambient humidity probe No.3 No No Auto
Yes,10 s
(progr.)
Only indication 0 AL30g AL3007 259
RS485 probe No.3 without communication No No Auto
Yes,
10 s
Only indication
Stop zone 3 (air fl ow zoning)
0 AL30h AL3008 257
Failure of ambient temperature probe No.3 No No Auto
Yes,10 s
(progr.)
Only indication
Stop zone 3 (air fl ow zoning)
0 AL30i AL3009 258
Failure of ambient humidity probe No.4 No No Auto
Yes,10 s
(progr.)
Only indication 0 AL30j AL3010 262
RS485 probe No.4 without communication No No Auto
Yes,
10 s
Only indication
Stop zone 4 (air fl ow zoning)
0 AL30k AL3011 260
Failure of ambient temperature probe No.4 No No Auto
Yes,10 s
(progr.)
Only indication
Stop zone 4 (air fl ow zoning)
1 AL30l AL3012 261
Failure of the indoor (return) humidity probe No No Auto No Only indication 1 AL33 AL33 112
Failure of the outdoor humidity probe No No Auto No Only indication 1 AL34 AL34 113
Failure of the supply temperature probe No No Auto No Only indication 1 AL35 AL35 114
Failure of the mixing temperature probe or the
air quality probe
No No Auto No Only indication 1 AL35a AL3501 130
COOLING setpoint < HEATING setpoint Yes Yes Manual No Serious alarm, unit shutdown 3 AL36 AL36 115
COOLING setpoint < HEATING setpoint in
zone 1
Yes Yes Auto No Unit shutdown (air fl ow zoning) 0 AL36a --- 360
COOLING setpoint < HEATING setpoint in
zone 2
Yes Yes Auto No Unit shutdown (air fl ow zoning) 0 AL36b --- 361
COOLING setpoint < HEATING setpoint in
zone 3
Yes Yes Auto No Unit shutdown (air fl ow zoning) 0 AL36c --- 362
COOLING setpoint < HEATING setpoint in
zone 4
Yes Yes Auto No Unit shutdown (air fl ow zoning) 0 AL36d --- 363
Anti-fi re safety device / smoke detection Yes
Yes,
all circuits
Manual No
Serious alarm, shut-down of
the unit and fresh air damper
open / closed (confi gurable by
parameter)
3 AL39 AL39 136
Supply temperature limit exceeded No No Manual No
Shutdown of electrical heaters or
gas burner/boiler
3 AL40 AL40 166
c.pCOe expansion card addr. 8 without
communic.
No No Auto No Only indication 0 AL45b AL4502 211
c.pCOe expansion card addr. 8 alarm mismatch No No Auto No Only indication 0 AL45g AL4507 210
c.pCOe expansion card address 9 without
communication
No No Manual No
Unit shutdown and dampers on
the previous position to the alarm
(zoning 2 zones)
0 AL45c AL4503 ---
c.pCOe expansion card addr. 9 alarm mismatch No No Auto No Only indication 0 AL45h AL4508 ---
Energy meter without communication No No Auto No Only indication 0 AL46 AL46 192
Supply plug-fan addr.1 without communication No No Auto No Only indication 1 AL47 AL47 201