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Idiomas disponibles
Idiomas disponibles
710.1760.00.01-03A
No.
Device
status
(*) A After fault rectification, system is automatically restored to standard setting – M Alarm function restored by settings
HOW TO VISUALIZE A WARNING/ALARM EVENT (CONTROLLER TYPE "A")
CONTROLLER Type "A"
(CHW 11 to CHW 28; CHG 08)
The LED warning alarm on ((!)) shows that an alarm is taking place.
To see which kind of alarm, the max temperature (minimum) and the length, act as follow:
1) Press one of the two buttons
or LAL (low temperature alarm) followed by Max. temperature (minimum), "tiM" will then
appear (tiMe), followed by the "length" in h.mm.
2) At this point the instrument will show the temperature again
Note: the length defines the partial length in case the alarm is still on
HOW TO RESET AN ALARM EVENT
1) Press the button
temperature alarm).
2) Keep button
3) The display shows: rST, which after 2 sec starts lightening, to show that the values have
been cancelled
CONTROLLER TYPE "B" (CHW 29 TO CHW 602; CHO 29 TO CHO 149; CHG 24 TO CHG 140)
No.
Device
Alarm
status
code
OFF
z
A08
Fan, Com-
pressor and
1
pump are
A09
not working
ACF1
ACF2
ACF3
ACF4
ACF5
AFR
EE
Fan and
compressor
are not
2
A01
working,
pump is
working
Alarm
Alarm de-
code
scription
Low liquid tem-
LA
perature
Sensor SA de-
P2
fective
made on the control unit, procedure as described below.
or
, the display shows HAL (high temperature alarm) or LAL (low
pressed
Alarm descrip-
tion
Remote ON/OFF contact is
Unit is in Off by
open or internal bridge
remote ON/OFF
removed
The unit is energized but
Unit in stand by
not switched on
Liquid flow too low
Flow switch alarm
Liquid in the tank too low
Thermal protections of a
new unit are in OFF posi-
Pump thermal
tion
switches alarm
Pump is having problem
Configuration
Parameters set up in a
alarm
wrong way
The frequency of power
Frequency alarm
supply is out of range
Internal problem of the
Eeprom run
controller
Ambient temperature too
high
Refrigerant high
pressure alarm
Dirty condenser
Possible cause
Ambient temperature too
low is decreasing liquid tem-
perature
Probe can be defective or
not well connected
or
the display will show HAL (high temperature alarm)
Possible cause
Check bridge ROO and close the
contact
Follow procedure to start up the
unit using button on controller
Check right rotation of the pump
and possible obstruction on liquid
circuit
Fill the tank
Switch MTP in ON
Check pump and possible ob-
struction on liquid circuit
Check parameter setup
Check correct power supply
Reset alarm and in case of per-
sistent problem change controller
Decrease ambient temperature,
increasing ventilation of the
room, removing heat sources or
repairing the unit from the direct
rays of sun
Clean the condenser as described
in maintenance
30
Recommended remedy
The unit have to work in ambi-
ent condition as specified in
this manual
Check connection and in case
change probe
Recommended remedy
14/11/2012
Fault recti-
fication (*)
Restore (*)
A
A
A
becomes
M after 1
events in 1
hour
M after reset
MTP
A
A
M
M after reset
high pressure
switch using
button on it if
present
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