–
111
–
'18 • KX-SM-292
Error code
Remote control:
7-segment display:
LED
Green
Red
Indoor
Outdoor
Content
E53/E55
E53/E55-1
Suction pipe temperature sensor anomaly (Tho-S),
Under-dome temperature sensor anomaly (Tho-C1)
Keeps flashing Stays Off
Keeps flashing 1 time
fl
ash
1. Applicable model
5. Troubleshooting
Outdoor unit
Diagnosis
Countermeasure
Check and save the data of
operating conditions.
Check the conditions
whether it occurs
immediately after the
power on or during
operation or stopping.
Check the sensed value.
Compare the temperature
on Mente PC with actual
measured value.
Insert the connector
securely
Replace sensor
(Tho-S or Tho-C1)
Replace outdoor unit control
PCB.
2. Error detection method
Detection of anomalously low
temperature (resistance) of
Tho-S or Tho-C
3. Condition of error displayed
• if -50°C or lower is detected
for 5 seconds continuously
within 2 minutes to 2 minutes
20 seconds after compressor
ON, compressor stops. When
the compressor is restarted
automatically after 3-minutes
delay, if this anomaly occurs 3
times within 40 minutes
4. Presumable cause
• Broken thermistor harness or
the internal wire of sensing
section (Check the molded
section as well)
• Disconnection of thermistor
harness connection
(connector)
• Outdoor unit control PCB
anomaly
Note:
E53: Tho-S, E55-1: Tho-C1
5kΩ at 25C
º
Temperature (Cº)
T
empearture sensor resistance (kΩ
)
NO
NO
YES
YES
Save data for 30 minutes before stopping in Mente PC
Is
the connector of
sensor connected
properly ?
Are
the characteristics
of sensor OK?
*1
Regarding the characteristics of
the sensor, see the following chart
Temperature-resistance characreristics of
suction pipe temperature sensor (Tho-S)
Temperature-resistance characreristics of
under-dome temperature sensor (Tho-C1)
*1 Check several times to prove any poor connection
Temperature (Cº)
T
empearture sensor resistance (kΩ
)
0
20
40
60
80
100
120
140
160
180
200
0
20
40
60
80 100 120 140 160
Error code
Remote control:
7-segment display:
LED
Green
Red
Indoor
Outdoor
Content
E54
E54-1, 2 *1
High pressure sensor anomaly (PSH)
Low pressure sensor anomaly (PSL)
Keeps flashing Stays Off
Keeps flashing
*1
1. Applicable model
5. Troubleshooting
Outdoor unit
Diagnosis
Countermeasure
Is anomalous
pressure detected?
Is the
connector of the
sensor inserted
properly to the connector on
the outdoor control
PCB?
Save data for 30 minutes before stopping in Mente PC
Reset the power and restart operation.
Check the data for 30 minutes before stopping
High pressure sensor
output characteristics
Sensor output Black (GND) – White; Output voltage (Black – Red; DC5V)
Pressure (MPa)
Pressure (MPa)
Low pressure sensor
output characteristics
E54
Does it recur?
Does
the pressure
converted from the
sensor output voltage match the
actual pressure measure
by pressure
gauge?
Output voltage (V)
Output voltage (V)
Check and save the data of
operating conditions.
Check the conditions
whether it occurs
immediately after the
power on or during
operation or stopping.
Check the sensed value.
Insert the connector
securely and restart
operation.
Temporary malfunction by
noise.
Correct if the source of
noise is specified.
Replace sensor (PSH, PSL).
Replace outdoor unit control
PCB.
2. Error detection method
Detection of anomalous pressure
(valtage) of PSH or PSL
Operation range
High pressure : 0-4.15MPa
Low pressure : 0-1.7MPa
3. Condition of error displayed
If anomalous sensor output
voltage (0V or lower or 3.49V
or higher) is detected for 5
seconds within 2 minutes to 2
minutes 20 seconds after the
compressor ON
4. Presumable cause
• Broken sensor harness
• Disconnection of sensor
harness connection
(connector)
• Sensor (PSH, PSL) anomaly
• Outdoor unit control PCB
anomaly
• Anomalous installation
conditions
• Insufficient air flow volume
• Excessive or insufficient
refrigerant amount
Note:
*1 E54-1: 1 time flash (PSL), E54-2 : 2 time flash (PSH)
[ ]
YES
YES
YES
YES
NO
NO
NO
NO
Summary of Contents for FDC224KXZME1
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