value is accepted.
Validation is obtained by pushing
the F/Blower key again and by
going to the next function line.
Then final validation will occur
automatically when the display
goes back to room temperature
read-out or final validation can be
forced by pushing the On/Off key
briefly while still in F mode.
Validation is witnessed by the brief
display of the message <memo>.
b) Read out of chilled water temperature :
<H10.2> (10.2 ° C) - for example.
c) Cycle mode choice : <F 3> (1 to 5)
The following cycle modes can be choosen
manually :
1 = cool cycle only
2 = heat cycle only
3 = automatic cycle switching with reversible
compressor
4 = automatic cycle switching without
reversible compressor
5 = heat cycle only without reversible com-
pressor
d) AC Voltage read-out : < U232>
(232 Volts)
e) Manual on/off Compressor 1 : <1C01>
<1C01> = Compressor 1 on
<1C00> = Compressor 1 off
f) Manual on/off Compressor 2 : <2C01>
<2C01> = on
<2C00> = off
Idem for compressors 3 and 4 - <3C01> and
<4C01>.
g) Start-up Priority Compressors 1 to 4 :
<P123> = 1,2,3,4 ; <P341>=3,4,1,2
<P A> = automatic priority rotation; when
in this priority mode, the starting
order will be changed at every
restart after a thermostatic cut-out.
h) Time delay between compressor start-up :
<L 9> (9 seconds) - programmable
from 1 and 9 seconds.
i) Individual thermostatic advance compres-
sors 1 to 4. In relation to the general chilled
water temperature set-point, it is possible to
differenciate the cut-out temperature for
each compressor.
Factory default setting : <1L0.0> etc
<2L1.2> means compressor 2 will cut out
1.2° before the general set-point value. So
for a general value of 4°, compressor 2 will
cut out at 4 + 1.2 = 5.2 °.
Same is possible for the other compressors.
j) Automatic dehumidification while absent.
factory default setting : <d 0>
0 = non active
1 = 1 cycle per 24H
2 = 2 cycles per 24H etc
k) Display time of secondary functions (F/
Blower key) by periods of 20 seconds.
<t 1> (factory default setting) = display
time 20 seconds.
4. VISUAL ERROR CODES -
DIGITAL DISPLAY
The following malfunctions will be dis-
played directly on the digital display by a
code and will be followed by a system halt
(except for <bA11> - see hereafter).
Whenever any of these codes appear the sys-
tem is stopped for approx. 60 seconds and
then a re-start is attempted.
If for more than 30 minutes the same mal-
function occurs, the system will be stopped
completely and the error-code will become
steady.
No more re-starts will be attempted and the
user will have to re-set the system by pushing
the On/Off key or by temporarily cutting off
the AC supply to the system.
List of error-codes and nature of malfunc-
tion :
Code <AAA> :
Persistent low voltage (voltage below 195V)
for more than 5 seconds - (see also hereafter
- Trouble-Shooting - Page 19).
Code A01 to A08 :
Pressure safety cut-out of compressors 1 to 4.
The HP(High Pressure) and BP(Low
Pressure) safety switches are directly con-
trolled by the micro-processor inclusing the
time-delays for re-start, etc.
Error codes displayed and probable nature of
anomaly.
<A01> : BP (low pressure) cut-out - com-
pressor 1 - probable causes :
- interrupted or insufficient water-
flow in chiller circuit
- sea-water circulation deficient
when running in heat cycle mode
- insufficient refrigerant charging
level
- abnormal sea-water temperature
conditions in heat cycle (sea-water
temperatures under 6° C. approx.)
- first start-up in heat cycle with
very low chilled water circuit tem-
peratures (below 8° C approx.).
<A02> : HP (high pressure) cut-out - com-
pressor 1 - probable causes :
- insufficient or non-existent sea-
water cooling - check sea-water
pump.
- insufficient or interrupted water
flow in chiller circuit when operat-
ing in heat cycle.
- too much refrigerant in system -
call a specialist
- abnormal sea water temperature
conditions in heat cycle (sea-water
temperatures above 20° C approx.)
<A03> : BP cut-out - compressor 2 - for
probable causes see <A01>
<A04> : HP cut-out - compressor 2 - for
probable causes see <A02>
<A05> to <A08> - same as above for com-
pressors 3 and 4 (if present).
If any of these error codes appear too fre-
quently and no appropriate action can be
taken with the available means on board, it is
necessary to call a specialist.
Do not insist with manual re-starts in such
cases as this may cause major damage to the
principal components (compressors, pumps,
etc).
<A09> - absent or defective external air sen-
sor.
<A10> - absent or defective chilled water
sensor.
<bA11> - blower operation from TECC card
impossible because of non-compati-
ble water temperature versus pro-
grammed set-point. This is the only
error code which will not result in
a complete system halt.
<CA11> - all compressors are disactivated
by soft - through F/Blower key : <1C00>,
<2C00>, etc.
To reactivate re-program as follows :
<1C01>, <2C01>, etc
2004 SERIES - CHILLER SYSTEMS - OPERATION AND INSTALLATION MANUAL - PAGE : 5
2004 SERIES - CHILLER SYSTEMS - OPERATION AND INSTALLATION MANUAL - PAGE : 5
EDITION DATED 21ST AUGUST 2006
