Alarms - AERMEC anz Manual De Instrucciones

The signalling of particular working states
of the unit, or the emergence of an alarm
condition, are communicated by the micro
chiller controller, with codified messages
visualised on the display; to decode these
Code
Type
S Defrosting level
d1
S Defrosting error
r1
S Error of communication with
Cn
the remote terminal
A high pressure
H1
A low pressure
L1
A Antifreeze
A1
A FLOW SWITCH
FL
A Probe alarms
E1, E2,
E3
A Compensation probe alarm
E4
A Error of low or high supply
EU/EO
voltage
A Eeprom alarm error
EP/EE
A Error of line disturbance
EL
A Error of expansion module for
Er
compensation probe
A High temperature of return
Ht
water
Key::
RESETTING OF THE ALARMS
S: Signalling
A: ALARM
With the disappearance of the automatically restored alarms (or the contemporary pressing of
and
• disactivation of the alarm relays;
• suspension of the flashing temperature on the display;
• suspension of the visualisation of the alarm code.
If the alarm condition continues, the procedure for signalling the alarm is repeated.
8

ALARMS

messages, use the table below. When an
alarm is activated, the following actions are
generally carried out:
• activation of alarm relay
• flashing of the temperature visualisation on
Cause
D u r i n g
t h e
If the defrosting finishes according to maximum time, when the conclusion for the
reaching of temperature threshold, or outside contact, is selected, the machine
shows the sign r1. The message is disactivated by cancelling the alarms, or by
carrying out another, correct defrosting cycle. The alarm relay is not activated.
I n t h e e v e n t o f a c o m m u n i c a t i o n e r r o r b e t w e e n t h e p a n e l o n t h e
machine, and the remote terminal PRD, the message Cn is visualised;
c h e c k
The compressor is immediately switched off, the alarm relays are activated, and the
display flashes. The fans are activated at maximum speed for 60 seconds, to contrast
the alarm situation, then they are switched off. The heat pumps can also indicate the
intervention of the thermal protection of the compressor. The restoration is manual.
The alarm leads to the immediate switching off of the compressor, or its non-starting.
The alarm relays are activated, and the display flashes. The restoration is automatic.
The alarm is sensed by the water outlet probe of the evaporator (SUW). The
alarm immediately switches off the compressor and the fans, while the
alarm relays are activated and the display flashes. The restoration is manual.
The alarm switches off the pump, the compressor and fans. The display
flashes and the alarm relays are activated; The restoration is manual.
T h e
t h e
a c t i v a t e d a n d t h e d i s p l a y f l a s h e s . T h e r e s t o r a t i o n i s a u t o m a t i c .
E1: Water inlet probe
E2: Water outlet probe
E3: Coil probe
T h e
t h e
a c t i v a t e d a n d t h e d i s p l a y f l a s h e s . T h e r e s t o r a t i o n i s a u t o m a t i c .
In the event of a supply voltage that is too low, the message EU appears;
if too high, the indication is EO. In these cases, the correct working
o f t h e u n i t i s n o l o n g e r g u a r a n t e e d . I n t h e e v e n t o f E O a l a r m , t h e
compressor, pump and fans are switched off; the restoration is automatic.
A problem in the non-volatile memory of the machine (eeprom). If it is a case
of EE, the unit continues to work until the first loss of power supply. When
power supply is restored, if the error is still present, the display begins to flash,
showing the sign EP, and the unit doesn't start up; the restoration is automatic
Appears if a loud noise is present in the power supply. In this case, the fans (if driven
with the DCPX accessory) will begin to work On/Off for the time that the disturbance
continues. The restoration is automatic.
The presence of an expansion module alarm leads to the disactivation
o f t h e c o m p r e s s o r , t h e f a n s a n d t h e p u m p ; t h e r e l a y a l a r m s a r e
a c t i v a t e d
I n t h e e v e n t t h a t t h e t e m p e r a t u r e o f t h e r e t u r n w a t e r i s h i g h e r
t h a n t h e s e t l i m i t , t h e w o r k i n g c y c l e o f t h e u n i t i s i n t e r r u p t e d ;
t h e
for five seconds for the manually restored alarms), the following actions are obtained:
t h e d e f r o s t i n g p r o c e d u r e ,
m e s s a g e d 1 a l t e r n a t e d
t h e c o n n e c t i o n c a b l e .
p r e s e n c e o f a p r o b e
c o m p r e s s o r , t h e f a n s
p r e s e n c e o f a p r o b e
c o m p r e s s o r , t h e f a n s
a n d t h e d i s p l a y
a l a r m r e l a y i s n o t a c t i v a t e d .
the display
• visualisation on the display of the alarm
code, alternated with the temperature
Description
t h e m a c h i n e
w i t h t h e
T h e a l a r m r e l a y i s
a l a r m l e a d s t o t h e d i s a c t i v a t i o n
a n d t h e p u m p ; t h e r e l a y
a l a r m l e a d s t o t h e d i s a c t i v a t i o n
a n d t h e p u m p ; t h e r e l a y
f l a s h e s . T h e r e s t o r a t i o n
T h e r e s t o r a t i o n
v i s u a l i s e s
t e m p e r a t u r e .
n o t a c t i v a t e d .
o f
a l a r m s a r e
o f
a l a r m s a r e
i s a u t o m a t i c
i s a u t o m a t i c .