Label
Fault
Cause
Effects
Remedy
COH
Over Heating
alarm
Pb3 value set by parameter SA3 exceeded
• Recording of label
COH
in folder AL
• Alarm icon permanently on
• Regulation locked (Compressor)
• wait for the temperature to return
to a value of
SA3
(Setpoint) minus
dA3
(differential)
nPA
General pressure
switch alarm
Activation of pressure alarm by general
pressure switch
If the number
N
of pressure switch activations is:
N
<
PEn
:
• Recording of folder
nPA
in folder AL, with the
number of pressure switch activations
• Regulation locked (Compressor and Fans)
• check and remove the cause which
triggered the alarm on the D.I.
(Automatic Reset)
PAL
General pressure
switch alarm
Activation of pressure alarm by general
pressure switch
If the number
N
of pressure switch activations is:
N
=
PEn
:
• Display label
PAL
• Recording of label
PA
in folder AL
• Alarm LED steady
• Regulation locked (Compressor and Fans)
• Switch the device off and back
on again
• Reset alarms by entering the
functions folder and selecting the
rAP
function (Manual Reset)
HC
n
Max/Min Pb3
value when out
of range (SLH...
SHH)
Logs the Max/Min value recorded by Pb3
when it exceeds range SLH...SHH.
“n”
represents the sequential number of
times the range is exceeded.
• Recording of folder “HC
n”
in folder AL
• Alarm LED steady
• No effect on regulation
NB
: “
n
” can assume the values 1 to 8.
If
n
> 8, folder HC8 will flash and the
system will overwrite folders where
n
=1
tC
n
Pb3 out-of-range
dwell time
(SLH...SHH)
Stores the dwell time of the Pb3 value outside
range SLH...SHH.
n”
represents the sequential
number of times the range is exceeded.
• Recording of folder “tC
n”
in folder AL
• Alarm LED steady
• No effect on regulation
NB
: “
n
” can assume the values 1 to 8.
If
n
> 8, folder HC8 will flash and the
system will overwrite folders where
n
=1
bC
n
Value recorded
by Pb3 on return
from
bOt
Logs the value recorded by Pb3 on return
from a blackout.
“n”
represents the sequential
number of blackouts that have occurred.
• Recording of folder “bC
n”
in folder AL
• No effect on regulation
NB
: “
n
” can assume the values 1 to 8.
If
n
> 8, folder bC8 will flash and the
system will overwrite folders where
n
=1
bt
n
Pb3 out-of-range
dwell time
during
bOt
Stores the out-of-range dwell time of the
Pb3 value during a blackout.
“n”
represents the sequential number of
blackouts that have occurred.
• Recording of folder “bt
n”
in folder AL.
The value contained will be
0
if the value of
Pb3 has remained within the range,
≠ 0
if the
value has gone outside of the range
• No effect on regulation
N.B.
: “
n
” can assume the values
1 to 8.
If
n
> 8, folder bC8 will flash and
the system will overwrite folders
where n=1
NOTE:
to delete folders “HC
n
”, “tC
n
”, “bC
n
” and “bt
n
” from folder AL, start function
rES
in folder FnC.
