M0G940E8-00 04/07/08
pag
41
ALARMS
BEFORE RESETTING THE ALARM, IDENTIFY AND ELIMINATE THE CAUSE OF ITS ACTIVATION.
REPEATED RESETS CAN CAUSE IRREVERSIBLE DAMAGES.
The
ALARMS
show a potentially dangerous situation for machine safety.
Before resetting the alarm, discover and remove the cause: repeated resetting could cause irreversible damage. To avoid this,
the unit can only be reset MANUALLY from the keyboard (only when the cause for the alarm has been removed).
PRE-ALARMS and SIGNALS
warn of a risky situation. These could be acceptable only if they happen occasionally or in
transitory situations (for example when the plant is being started up).
They are reset AUTOMATICALLY, as soon as the cause has been removed, without any input from the keyboard.
The pre-alarms are signalled by the fixed C code (not flashing) and on the right the control temperature.
The
FAULTS
warn of problems with the probes and transducers, and are reset AUTOMATICALLY to allow the unit to continue
running, perhaps with fewer functions.
In case of doubt, always contact an authorised service centre.
The presence of an alarm is signalled by the ALARM CODE flashing and the time at which the alarm/alarms occurred.
The cumulative block relay activates simultaneously to the alarm code visualization.
Certain alarms, in particular PRE-ALARMS, do not activate the relays.
The complete list of alarms is provided below; depending on the machine type and its configuration, some of the codes shown
may not be used.
E 00
Serial faulty - comunicazione tastiera / scheda base
Auto.
E 1
Faulty or disconnected water inlet probe
Auto
E 2
Faulty or disconnected water outlet probe
Auto.
E
3
Faulty or disconnected radiating panel water probe (radiating panel option)
Auto.
E
4
Faulty or disconnected coil probe
Auto.
E
5
Electric heater output probe
Auto.
E
6
Faulty or disconnected external probe
Auto.
E
7
Faulty or disconnected pressure transducer
Auto.
E 8
Plug-in pressure probe
C
9
Water Reset inlet in short circuit or out of range
Auto.
E
10
Faulty or disconnected external RH% probe
Auto.
E
11
High pressure
MANUAL
E
12
Low pressure
Auto.
E
13
Condensing fan and/or compressor thermal switch
MANUAL
E
14
Electric heater antifreeze alarm
MANUAL
E
17
Pump flow
Auto.
E
18
System charged with water
MANUAL
E
19
Phase monitor
Auto.
E
20
Antifreeze alarm
MANUAL
C
21
Antifreeze PREAlarm
Auto.
C
22
High pressure PreAlarm
Auto.
C
24
Pump change
Auto.
E
25
flow alarm C1
Auto.
E
30
Coil frost alarm
MANUAL
E
31
Cooling limit alarm (radiating panel option)
Auto.
E
32
Water frost alarm (radiating panel option)
Auto.
E
33
Incongruent DeltaT alarm
MANUAL
C
34
Low pressure pre-alarm
Auto.
C / E
35
Inlet water temperature over threshold after cooling / sanitary hot water switching and vice versa
Auto
C 36
Incongruent sanitary H2O thermostat
Auto
1
AL
AR
M
STA
TU
S
SE
T
E 11
2
flashing
Alarm code
Alarm unit hours
2
AL
AR
M
ST
AT
US
SET
opened alarm log
short pressure
ALARM
3
AL
AR
M
ST
AT
US
SET
The most recent alarm is
visualized
Use the arrow keys to visualize
other alarms
4
AL
AR
M
ST
AT
US
SET
To esc
Short pressure
ALARM
5
AL
AR
M
STA
TU
S
SE
T
To RESET
LONG pressure
ALARM
Summary of Contents for WSAN-XPR 21
Page 2: ......
Page 25: ...M0G940E8 00 04 07 08 pag 25...
Page 48: ...M0G940E8 00 04 07 08 pag 48...
Page 49: ...M0G940E8 00 04 07 08 pag 49 TECHNICAL DATA...
Page 59: ......
