Carrier 50FC - CO2 Air Quality Probe Connection

26
12.3. Alarm list
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.
Thermal protection of compressors and
outdoor fan(s) of circuit 1
No Yes Auto (*) No Shutdown of circuit 1
1 (2 with
manual reset)
AL01 AL1 27
Thermal protection of compressor of
recovery circuit
No Yes Auto(*) No Stop the recovery compressor
1 (2 with
manual reset)
AL01a --- 269
Thermal protection of compressors and
outdoor fan(s) of circuit 2
No Yes Auto (*) No Shutdown of circuit 2
1 (2 with
manual reset)
AL02 AL2 28
High pressure of circuit 1 No Yes Auto (*) No Shutdown of circuit 1
1 (2 with
manual reset)
AL05 AL5 29
High or low pressure of recovery circuit No Yes Auto (*) No Stop the recovery compressor
1 (2 with
manual reset)
AL05cr --- 118
High pressure of circuit 2 No Yes Auto (*) No Shutdown of circuit 2
1 (2 with
manual reset)
AL06 AL6 30
Safety alarm of the rotary heat exchanger No No Manual No Stop the rotary heat exchanger 1 AL07a AL701 ---
Maintenance of recovery compressor No No Manual No Only indication 0 AL08 AL8 119
Anti-freeze alarm of hot water coil
Yes (in
COOLING)
Yes, all
circuits (in
COOLING)
Manual Yes, 2 s
HEATING mode: this closes
fresh air damper and opens hot
water coil valve
COOLING mode: this stops
compressors and closes fresh
air damper
2 AL09 AL9 31
High indoor temperature No No Auto
Yes
(progr.)
Only indication 0 AL10 AL10 34
Low indoor temperature No No Auto
Yes
(progr.)
Only indication 0 AL11 AL11 35
Low pressure of circuit 1 (possible gas
leak in the circuit)
No Yes Auto (*) No Shutdown of circuit 1
1 (2 with
manual reset)
AL12 AL12 38
Low pressure of recovery circuit No Yes Auto
Yes,
15 s
(progr.)
Stop the recovery compressor
0 (1 with
manual reset)
AL12cr --- 267
Low pressure of circuit 2 (possible gas
leak in the circuit)
No Yes Auto (*) No Shutdown of circuit 2
1 (2 with
manual reset)
AL13 AL13 39
Low pressure due to continuous
defrosting by min. pressure of circuit 1
(possible gas leak in the circuit)
No Yes Auto (*) No Shutdown of circuit 1
1 (2 with
manual reset)
AL12b AL1202 225
Low pressure due to continuous
defrosting by min. pressure of circuit 2
(possible gas leak in the circuit)
No Yes Auto (*) No Shutdown of circuit 2
1 (2 with
manual reset)
AL12c AL1203 226
Maintenance of compressor 1 - circuit 1 No No Manual No Only indication 0 AL16 AL16 36
Maintenance of compressor 1 - circuit 2 No No Manual No Only indication 0 AL17 AL17 37
Maintenance of compressor 2 - circuit 1 No No Manual No Only indication 0 AL18 AL18 122
Maintenance of compressor 2 - circuit 2 No No Manual No Only indication 0 AL19 AL19 123
Thermal protection of supply fan Yes
Yes,
all circuits
Manual 0 s Serious alarm, unit shutdown 3 AL20 AL20 40
Failure of high pressure transducer of
circuit 1
No Yes Auto No Shutdown of circuit 1
1 (2 after
delay)
AL21 AL21 41
Failure of high pressure transducer of
recovery circuit
No Yes Auto No Stop the recovery compressor
1 (2 after
delay)
AL21cr --- 274
Failure of high pressure transducer of
circuit 2
No Yes Auto No Shutdown of circuit 2
1 (2 after
delay)
AL22 AL22 42
Failure of low pressure transducer of
circuit 1
No Yes Auto No Shutdown of circuit 1
1 (2 after
delay)
AL21b AL2102 212
Failure of low pressure transducer of
recovery circuit
No Yes Auto No Stop the recovery compressor
1 (2 after
delay)
AL22cr --- 273
Failure of low pressure transducer of
circuit 2
No Yes Auto No Shutdown of circuit 2
1 (2 after
delay)
AL21c AL2103 213
Failure of suction temperature probe
of circuit 1
No Yes Auto No Shutdown of circuit 1
1 (2 after
delay)
AL21d AL2104 ---
Failure of suction temperature probe of
recovery circuit
No Yes Auto No Stop the recovery compressor
1 (2 after
delay)
AL21dcr --- 275
Failure of suction temperature probe
of circuit 2
No Yes Auto No Shutdown of circuit 2
1 (2 after
delay)
AL22d AL2204 ---
Failure of outdoor coil temperature probe
(units with 1 circuit)
No No Auto No
Only indication, end of
running of outdoor fans during
defrosting by time and not by
outdoor coil temperature probe
1 (2 after
delay)
AL22d AL2204 ---
Clogged fi lters Yes No Auto Yes, 2 s
Only indication or unit shutdown
(confi gurable by parameter)
3 or 1 AL23 AL23 43
Thermistor of electrical heaters Yes
Yes,
all circuits
Auto (*) Yes, 4 s
Shutdown of electr. heaters
Unit/compressor shutdown
(confi gurable by parameter)
Locking by repeated alarms
3 or 2 AL24 AL24 44