High Condenser Temperature Alarm; Frost Protection Alarm; Defrost Ended By Timeout Alarm - Carel ir33+ small wide User Manual

AH
S1
St
ON
ALARM
OFF
black out
Key
S1 Control probe
AH High temperature alarm
threshold
ALARM HF HACCP alarm
St Set point

8.7 High condenser temperature alarm

The condenser temperature can be monitored and high temperature
situations signalled, most likely when the condenser is blocked. The
following fi gure describes the signal.
Par Description
Ac High condenser temperature alarm threshold
AE High condenser temperature alarm diff erential
Acd High condenser temperature alarm delay
0 = Immediate alarm
Ac
Sc Ac - AE/2
Ac - AE
ON
cht
OFF
ON
CHT
OFF
Fig. 8.d
Key
t Time Ac High cond. temperature alarm
threshold
Acd Alarm delay cht High cond. temperature pre-alarm
Sc Condenser probe CHT High condensing temperature alarm
AE High condensing temperature alarm diff erential
t
t
Fig. 8.c
Ad High and low temperature alarm
delay
Htd HACCP alarm delay
0 = monitoring disabled
t Time
Def Min Max UOM
70 0 200 °C/°F
10 0.1 20
0 0 250 min
Tab. 8.c
t
t
t
Acd

8.8 Frost protection alarm

The frost protection alarm is only active if a probe has been set as the
frost protection probe. If this probe measures a temperature less than the
threshold ALF for a time greater than AdF, the alarm "AFr" (manual reset) is
shown. See the parameter table.
Par Description
ALF Frost protection alarm threshold
AdF Frost protection alarm delay
S
ALF
ON
ALARM
AFr
OFF
Key
t Time
AFr Frost protection alarm threshold
°C/°F

8.9 Defrost ended by timeout alarm

Alarms Ed1 and Ed2 signal that a defrost has ended when reaching the
maximum defrost duration. This can be disabled by setting A8 = 0.
Par Description
A8 Enable alarms Ed1 and Ed2 (end
defrost by timeout)
0 = alarms disabled
45
ENG
Def Min Max UOM
-5 -50 200 °C/°F
1 0 15
Tab. 8.d
t
t
AdF
Fig. 8.e
AdF Frost protection alarm
delay
Def Min Max UOM
0 0 250 min
Tab. 8.e
ir33plus +0300028EN rel. 1.1 - 05.05.2017
min