OPERATING AND MAINTENANCE MANUAL
Chapter 7 - Electronic controller
iC 215 ÷ iC 780
38
The data in this manual are not binding and they can be modified by the manufacturer without notice.
Reproduction of this manual is strictly prohibited
ENGLISH
EN
With the unit in
StbY
(stand-by) and the
E
LED flashing, press
and scroll with
or
to select the
ALrM
function
and press button
to display the active alarm.
7 . 1 1 . 2
H o w t o m u t e t h e b u z z e r
The controller emits an audible signal to alert the operator to the presence of alarms (buzzer).
The buzzer is muted in the following ways:
•
Automatic muting:
the buzzer is muted when the situation that caused the alarm ceases.
•
Manual muting:
press and release one of the buttons; the buzzer will be muted even if the alarm condition
persists.
7 . 1 1 . 3
G e n e r a l a l a r m s l i s t
Alarm codes and indications are composed of letters and numbers that identify different alarm types.
The first letter of the alarm label identifies the type as follows:
•
Letter
A
= unit alarm
•
Letter
b
= circuit alarm
•
Letter
C
= compressor alarm
The following tables contain a description of the alarms managed by the electronic circuit board. Some of the alarms
mentioned may not be referable to all unit models.
Outputs block
COD
. alarm
Alarm
Des
cri
p
tion
Alarm reset
Alarm Trip
Compressor
Pump
Fan
Heaters
AP1
Probe
PB1
fault alarm
A
I
X
X
X(1)
AP2
Probe
PB2
fault alarm
A
I
X
X
X(1)
AP3
Probe
PB3
fault alarm
A
I
X
X
X(1)
AP4
Probe
PB4
fault alarm
A
I
X
X
X(1)
AP5
Probe
PB5
fault alarm
A
I
X
X
X(1)
AP6
Probe
PB6
fault alarm
A
I
X
X
X(1)
APE1
Probe
PB1
.. Probe
Pb8
of I/O expansion
A
I
X
X
X
APE2
Probe
PB1
.. Probe
Pb8
of I/O expansion
A
I
X
X
X
APE3
Probe
PB1
.. Probe
Pb8
of I/O expansion
A
I
X
X
X
APE4
Probe
PB1
.. Probe
Pb8
of I/O expansion
A
I
X
X
X
APE5
Probe
PB1
.. Probe
Pb8
of I/O expansion
A
I
X
X
X
APE6
Probe
PB1
.. Probe
Pb8
of I/O expansion
A
I
X
X
X
APE7
Probe
PB1
.. Probe
Pb8
of I/O expansion
A
I
X
X
X
APE8
Probe
PB1
.. Probe
Pb8
of I/O expansion
A
I
X
X
X
AEFL
Evaporator water pump pressure switch or level sensor alarm
A/M R
X
X(2)
X
X
AtE1
Evaporator water pump thermal cutout
M
I
X(3)
X
X
X(4)
AtE2
Evaporator second water pump thermal cutout
M
I
X(3)
X
X
X(4)
AEE
EEprom alarm
M
I
X
X
X
ALSF
Phase sequence alarm (NOT USED)
A
I
X
X
X
X
ASLA
LAN communication with I/O expansion alarm
A
I
X
X
X
ALc1
Phase monitor alarm
A/M I
X
X
X
AEUn
Evaporator inlet high temperature unloading indication
A
R
ACF1
Configuration alarm
A
I
X
X
X
b(n)HP
Circuit (n) high pressure switch (iC 215÷540 models only)
A/M R
X
X
b(n)HP
Circuit (n) high pressure switch and/or compressor thermal alarm (iC
640÷780 models only)
A/M R
X
X
b(n)LP
Circuit (n) low pressure switch
A/M R
X
X
b(n)AC
Anti-freeze in chiller circuit (n)
A/M R
X
X
b(n)Ac
Signalling of anti-freeze in chiller circuit (n)
A/M R
b(n)hP
High condensing pressure transducer circuit (n)
M
I
X
b(n)HP
Low condensing pressure - (evaporation with low pressure transducer)
transducer circuit (n)
A/M R
X
AEht
Evaporator water inlet high temperature alarm
M
I
X
X
b1tF
Circuit 1 fans thermal alarm
M
I
X
b(n)rC
Circuit (n) recovery disabled signalling
A
I