OHM ELECTRIC COOL CABI OCA-H300BC-AW2, Instruction Manual

Page: 46 / 88

46
6. Alarm
6- Alarm number
COOLCABI outputs alarm when it detects an abnormality. An alarm number is displayed, the alarm lamp lights up
and alarm contacts change over by the setting of alarm output terminals.
Alarm No. Description Cause
Operation
behavior
Remedy
【
E1
】
High internal
temperature
Internal temperature
exceeded 45 ℃ default
☞
See page 4 for setting
ilter clogging
External fan failure
Lack of cooling
capacity
High ambient temp.
Cooling
operation
continues
Eliminate the cause of problem.
Alarm is automatically cancelled
when the internal temperature
drops below 43
℃
Default .
(
☞
See page 4 for setting
【 E3 】
Overheat
Overheat detector in
refrigerant circuit
is activated
ilter clogging
External fan failure
Lack of cooling
capacity
High ambient temp.
Cooling
operation
stops
Eliminate the cause of problem
and hold down SET button for 3
seconds to cancel the alarm.
(
☞
See page 4 for setting
【 E4 】
Maintenance
reminder
Cumulative operation
time reached the setting
☞
See page 4 for setting
Cooling
operation
continues
Hold down SET button for 3
seconds to cancel the alarm.
Cumulative operation time is reset
and operation restarts.
【
E5
】
Temperature
sensor error
Internal temperature
sensor was disconnected
Internal temp. sensor
disconnected or short.
Poor connector
connection
Cooling
operation
stops
Disconnect the COOLCABI and
contact us
【
E6
】
Drainage
error
loat switch was
activated due to water in
the drain pan
Drain hose is
clogged
Cooling
operation
stops
By draining water from the drain
pan, the alarm is automatically
cancelled and operation restarts
【
E7
】
Heat
exchanger
ice-up
Heat exchanger’s
temperature is below
℃
Internal fan failure
Short air circuit
Cooling fin is clogged
Cooling
operation
stops
Eliminate the cause of problem
and hold down SET button for 3
seconds to cancel the alarm.
【
E8
】
Heat
exchanger’s
temp.
sensor error
Temperature sensor of
heat exchanger
disconnected
Temp. sensor of heat
exchanger
disconnected or
short.
Poor connector
connection
Cooling
operation
stops
Disconnect the COOLCABI and
contact us
【
EC
】
External
communication
error
RS485 communication
does not work properly
raming error
Overrun error
Parity error
Cooling
operation
continues
Check the setting and the state of
communication. If communication
returns to normal, the alarm will
be automatically cancelled.
The alarm can also be cancelled
by holding down SET button for
more than 3 seconds
【
S1
】
Memory error
Memory error on
parameters occurred
Reading Writing error
of the memory
Parameter is reset
and cooling
operation
continues Hold down SET button for 3
seconds to cancel the alarm.
This is effective until the power is
disconnected.
Contact us if alarm recurs after
reconnecting the power.
【 S2 】
Memory error
Memory error on factory
parameters occurred
【 S3 】
Memory error
Memory error on
cumulative hours occurred
Cum. operation
time is reset and
cooling continues
【
S4
】
Memory error
Communication error
between CPU and memory
Parameter and
cum. operation
time are reset and
cooling operation
continues
【
S5
】
Internal
power supply
error
Output voltage of control
power supply dropped
Error in power supply
board of COOLCABI
Operation
stops
Contact us
【 SE 】
CPU error
CPU error Error in CPU operation
Operation
stops
Contact us if alarm recurs after
reconnecting the power.
【
tE
】
Type error
Error determination by
CPU on mounting type
Control board error
Operation
stops
Contact us if alarm recurs after
reconnecting the power.
Remarks * : Alarms E6, E7, E8 and tE are for Roof mounting type only.
* : In the event of the alarm EC, no alarm is output.
*1
*2
*1
*1
*1