Carrier 50FC - Centrifugal Fan Belt Tension Adjustment; Air Duct Connection Recommendations

28
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.
Supply plug-fan addr.22 without
communication
No No Auto No Only indication 1 AL47a ---
Supply plug-fan addr.23 without
communication
No No Auto No Only indication 1 AL47b ---
Supply plug-fan addr.24 without
communication
No No Auto No Only indication 1 AL47c ---
Supply plug-fan addr.25 without
communication
No No Auto No Only indication 1 AL47d ---
Supply plug-fan addr.26 without
communication
No No Auto No Only indication 1 AL47e ---
Supply plug-fan addr.27 without
communication
No No Auto No Only indication 1 AL47f ---
Supply plug-fan addr.28 without
communication
No No Auto No Only indication 1 AL47g ---
Failure of the pressure sensor for air fl ow
control (supply plug-fan)
Yes No Manual No Unit shutdown 3 AL48 AL48 202
Return plug-fan addr.2 without
communication
No No Auto No Only indication 1 AL49 AL49 205
Return plug-fan addr.32 without
communication
No No Auto No Only indication 1 AL49a ---
Return plug-fan addr.33 without
communication
No No Auto No Only indication 1 AL49b ---
Return plug-fan addr.34 without
communication
No No Auto No Only indication 1 AL49c ---
Return plug-fan addr.35 without
communication
No No Auto No Only indication 1 AL49d ---
Return plug-fan addr.36without
ccommunication
No No Auto No Only indication 1 AL49e ---
Return plug-fan addr.37 without
communication
No No Auto No Only indication 1 AL49f ---
Return plug-fan addr.38 without
communication
No No Auto No Only indication 1 AL49g ---
Failure of the pressure sensor for air fl ow
control (return plug-fan)
No No Manual No Only indication 3 AL50 AL50 206
Failure of the R-410A leak detector
sensor
No
Yes,
all circuits
Manual Yes, 60 s Compressors shutdown 3 AL51a AL5101 83
R-410A gas leak detected No Yes, all Manual Yes, 60 s Compressor shutdown 2 AL51b AL5102 82
R-410A leak detector without communication No Yes, all Manual Yes, 30 s Compressor shutdown 2 AL51c AL5103 81
R-410A leak detector: maintenance notice No No Manual No Only indication 0 AL51d --- ---
TCO terminal without communication No No Auto No Only indication 1 AL63a AL6301 ---
TCO with failure in the internal temperature
sensor
Yes No Auto No
Only indication or unit shutdown
(confi gurable by parameter)
3 or 1 AL63b AL6302 ---
TCO terminal with internal humidity sensor
failure
No No Auto No Only indication 0 AL63c --- ---
TCO terminal with clock card failure No No Auto No Only indication 0 AL63d --- ---
Water inlet temperature probe on the hot
water coil (c.pCOe expansion card add. 8)
No No Auto No Only indication 0 AL64 AL64 221
Water outlet temperature probe on the hot
water coil (c.pCOe expansion card add. 8)
No No Auto Yes, 5 s
The pump is activated and the
hot water coil valve open to 100%
0 AL65 AL65 222
Anti-freeze alarm on the hot water coil
(c.pCOe expansion card address 8)
No
Yes, all
(in COOLING)
Manual Yes, 10 s
Serious alarm, compressors
are stopped, pump is activated
and hot water coil valve opens
to 100%
2 AL66 AL66 223
Failure of the NTC or RS485 ambient air
temperature probe
Yes No Auto Yes, 5 s
Only indication or unit shutdown
(confi gurable by parameter)
3 or 1 AL67 AL67 224
Failure of the CO2 air quality probe No No Auto Yes, 5 s Only indication 1 AL67a AL6701 ---
Failure of the CO2 air quality probe installed
outdoor or in zone 2
No No Auto Yes, 5 s Only indication 1 AL67c --- ---
Failure of the di󰀨 erential pressure sensor
of the supply air
No No Auto Yes, 5 s
Non-operational constant supply
pressure control
1 AL67b --- ---
Failure of extraction temp. probe on the
wheel
No No Auto Yes, 5 s Stop the rotary heat exchanger 1 AL68 AL68 ---
Failure of recovery temp. probe on the
wheel
No No Auto Yes, 5 s Stop the rotary heat exchanger 1 AL69 AL69 ---
Failure of the supply damper not open
(c.pCOe expansion card address 9)
Yes No Manual Yes, 160 s
Without indication or unit
shutdown (configurable by
parameter)
3 or 0 AL70 AL70 ---
Failure in the return damper not open
(c.pCOe expansion card address 9)
Yes No Manual Yes, 160 s
Without indication or unit
shutdown (configurable by
parameter)
3 or 0 AL71 AL71 ---
Failure in the supply damper not closed
(c.pCOe expansion card address 9)
No No Manual Yes, 160 s Only indication 1 AL72 --- ---