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

710.1760.00.01-03A
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
AEHT
Fans and
compres-
sors are
2
not work- B1HP
ing, pump B2HP or
is working. C1HP
........
C6HP
key .
keys to find the "ALrM" label.
key, the lower display shows the alarm code.
or keys to scroll the alarm list.
Alarm descrip-
tion
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
The frequency of power
Frequency alarm
supply is out of range
Unit is stopped by Remote contact is open or
remote contact internal bridge removed
Thermal protections of a
new unit are in OFF position
Pump thermal
switches alarm
Pump is having problem
High liquid tem-
perature alarm (if
Required cooling capacity is
P3 or P4 high
higher than nominal
temp. alarm is
present)
Ambient temperature too
high
Refrigerant high
pressure alarm
Dirty condenser
Fan is not working fine or
the sense of rotation is not
correct
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
Decrease the required cooling
capacity
Decrease ambient tempera-
ture, increasing ventilation of
the room, removing heat
sources or repairing the unit
from the direct rays of sun
Clean the condenser as de-
scribed in maintenance
Check fuse of the fan, and
right rotation
32
Recommended remedy
14/11/2012
Restore (*)
A
A
A
A
becomes
M after 1
events in 1
hour
M
A
A
M after reset
MTP
A
becomes
M after 3
events in 1
hour
M after reset
high pressure
switch using
button on it if
present