Controller Type "C" (Chw 682 To Chw 3652; Chg 180 To Chg 365) - omi CHW 09 Manual De Uso Y Mantenimiento

710.1760.00.01-00
No. Device Alarm
status code
Fan and
A16
compressor
are not
2
working,
pump is
P1 P2
working
P3 P4
A13
Unit is
3
working
A15
(*) A After fault rectification system is automatically restored to standard setting
M Alarm function restored by settings made on the control unit, procedure as described below.
HOW TO RESET AN ALARM EVENT (CONTROLLER TYPE "B")
Controller Type "B"
(CHW 29 to CHW 602;
CHO 29 to CHO 230;
CHG 24 to CHG 140)
1) Enter the function Menu by press
2) Use or
3) Push and release the
4) Upper display: rSt label if the alarm can be reset, NO label if it is not possible (cause of alarm is
still persisting). Use
5) Push key, when rSt is lighted, to reset the alarm, after a while it will move to the next alarm.
6) To exit the function menu push and release the
disappears.

CONTROLLER TYPE "C" (CHW 682 TO CHW 3652; CHG 180 TO CHG 365)

No. Device Alarm
status code
OFF
Led off
ACF1
........
ACF9
AEFL
Pump, fan
and com-
1
pressor are
not working
AEE
AFR
ALOC
ATE1
ATE2
Alarm descrip-
tion
High liquid tem-
perature alarm in
Required cooling capacity
inlet line (if P3 or
is higher than nominal
P4 high temp.
alarm is present)
One of the probe Probe can be defective or
is defective not well connected
Maintenance cir-
Service on unit is required
cuit 1 only on re-
due to length of work
quest
Maintenance cir-
Service on unit is required
cuit 1 only on re-
due to length of work
quest
key .
keys to find the "ALrM" label.
key, the lower display shows the alarm code.
or keys to scroll the alarm list.
Alarm de-
scription
Remote ON/OFF contact is
Unit is in Off by
open or internal bridge re-
remote ON/OFF
moved
The unit is energized but
Unit in stand by
not switched on
Configuration Parameters set up in a
alarm wrong way
Liquid flow too low
Flow switch
alarm
Liquid in the tank too low
Internal problem of the
Eeprom run
controller
Frequency The frequency of power
alarm supply is out of range
Unit is stopped
Remote contact is open or
by remote con-
internal bridge removed
tact
Thermal protections of a
new unit are in OFF position
Pump thermal
switches alarm
Pump is having problem
Possible cause
Decrease the required cooling
capacity
Check connection and in case
change probe
Contact a refrigerant technician
Contact a refrigerant technician
key or wait the time-out. The "menu" icon
Possible cause
Check bridge ROO and close
the contact
Follow procedure to start up
the unit using button on con-
toller
Check parameter setup
Check right rotation of the
pump and possible obstruction
on liquid circuit
Fill the tank
Reset alarm and in case of
persistent problem change
controller
Check correct power supply
Check bridge IAE and close
the contact
Switch MTP in ON
Reset thermal switch and in
case contact of a persistent
problem contact service
31
Recommended remedy
Recommended remedy
22/07/2009
Restore (*)
A
becomes
M after 3
events in 1
hour
A
M
M
Restore (*)
A
A
A
A
becomes
M after 1
events in 1
hour
M
A
A
M after reset
MTP