Signals And Alarms; Signals; Alarms; Reset Alarms - Carel ir33+ small wide User Manual

8.1 Signals

Signals are messages shown on the display to notify the user of the
control procedures in progress (e.g. defrost) or confi rm the controls from
the keypad or remote control.
Code Icon Description
--- - Probe not enabled
dEF Defrost running
dFb Start defrost call
dFE End defrost call
cc Continuous cycle
ccb Start continuous cycle call
ccE End continuous cycle call
HcP Access HACCP menu
Ed1 - Defrost on evaporator 1 ended by timeout
Ed2 - Defrost on evaporator 2 ended by timeout
On - Switch ON
OFF - Switch OFF
rES - Reset alarms with manual reset
Reset HACCP alarms
Reset temperature monitoring
AUX - Auxiliary output activation call
d/1 Display defrost probe 1

8.2 Alarms

There are two types of alarms:
•
system: EEPROM, communication, HACCP, high (HI) and low (LO)
temperature;
•
control: pump down ended by timeout (Pd), low pressure (LP).
The EE/EF data memory alarms shutdown the controller. The auxiliary
digital outputs AUX1, AUX2 can be confi gured to signal the alarm status,
normally open or normally closed. See chapter 5. The controller indicates
alarms due to faults on the controller itself, on the probes or in network
communication. An alarm can also be activated from an external contact,
immediate or delayed. See paragraph 5.2. The display shows "IA" or "dA"
and at the same time the bell icon fl ashes and the buzzer is activated. If
more than one error occurs, these are displayed in sequence.
Example: display after HI error on ir33+:
Note: to mute the buzzer press Prg/mute.

8. SIGNALS AND ALARMS

8.3 Reset alarms

All the alarms with manual reset can be cleared by pressing Prg/mute and
UP together for more than 5 seconds.
Example: manually reset the frost protection alarm (AFr).
Tab. 8.a

8.4 HACCP alarms and display

To activate monitoring, see par. 8.6.
(HACCP = Hazard Analysis and Critical Control Point).
HACCP allows control of the operating temperature, recording any
anomalies due to power failures or an increase in the temperature due to
other causes (breakages, extreme operating conditions, user errors, etc.).
Two types of HACCP event are managed:
•
•
When an alarm is recorded, the HACCP LED fl ashes, the display shows
the alarm code, the alarm is saved and the alarm relay and buzzer are
activated.
Example: display after HA error on ir33+ and alarm reset:
41
ir33+
ir33+ wide/
ir33+ small wide
easy wide/
easy small wide
type HA alarms, high temperature during the operation;
type HF alarms, high temperature after power failure (blackout).
ENG


prg
a u x
mute

prg
a u x
mute
ir33plus +0300028EN rel. 1.1 - 05.05.2017