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64
15.3 Self Diagnosis Functions and Points of Diagnosis
[List of Diagnosis Method]
Code Name of Diagnosis
Descriptions on Diagnosis
Main Areas to be
Diagnosed
—
Codes for the
commencement of
self diagnosis
—
—
H00
No memory of error
code
—
—
H11 Indoor/outdoor
communication error
When the indoor/outdoor communication failed for 15 seconds or more, the power relay
is OFF for 2 minutes. Then, determine the presence of the error again. The error code is
displayed when the error is detected two times. (No communication error is determined
for 1 minute after the operation is started or the power relay is ON.)
<Points of diagnosis>
1. The model and supply voltage of the indoor and outdoor unit are checked.
2. Ensure that the control board of the outdoor unit is working.
3. The voltage of indoor/outdoor communication line, the supply voltage of the outdoor
unit and the return voltage from outdoor to indoor unit are checked.
Check of the model
of indoor & outdoor
units
Indoor/outdoor unit
connection wire
Indoor & outdoor
unit control boards
Outdoor unit AC
circuit components
H14 Indoor unit intake air
temperature sensor
error
This error code is displayed when the detected temperature of the intake air
temperature sensor is below -50°C for 5 consecutive seconds, or 149°C or higher for 2
consecutive minutes after 20 minutes have elapsed since the air conditioner is turned
on.
<Points of diagnosis>
1. This is an error code displayed when an improbable temperature is detected.
If the sensor is not open (
≥
500k
Ω
) or short-circuited (
≤
6.5k
Ω
), poor contact of the
connector has occurred.
Intake air
temperature sensor
(Bad connection/
detached
connector)
H15 Compressor
temperature sensor
error
This error code is displayed when the detected temperature of the compressor
temperature sensor is 330°C or higher for 5 consecutive seconds, or below -16°C for 5
consecutive seconds after 5 minutes have elapsed since the compressor is started.
<Points of diagnosis>
1. This is an error code displayed when an improbable temperature is detected.
If the sensor is not open (
≥
500k
Ω
) or short-circuited (
≤
0.5k
Ω
), poor contact of the
connector or a failure of control board has occurred.
Compressor
temperature sensor
(Bad connection /
detached
connector)
H16 Outdoor unit CT
disconnection error
If the detected total current is below 0.7A for 20 consecutive seconds when the air
conditioner operates beyond its rated capacity, the air conditioner stops and this error
code is displayed. (This function does not work for 3 minutes after the outdoor unit starts
operating.)
<Points of diagnosis>
1. Check of refrigerating cycle: Gas leak (Refrigerant level is very low.)
2. Check of control board; Check for disconnection of CT (open) only. (The control
board is to be replaced in case of CT open.)
For scroll compressor (DC motor): H16 is usually detected only when the
compressor is in operation.
Low refrigerant
level (almost
empty)
Outdoor unit control
board
H19 Indoor unit fan motor
lock error
If a rotation error (too high/low speed) is detected for 10 consecutive seconds, only the
fan motor is stopped and then restarted. If the rotation error is detected seven
consecutive times within 25 seconds, the fan motor lock is determined and this error
code is displayed.
<Points of diagnosis>
1. Check for indoor unit fan motor lock.
2. Poor contact and detached fan motor connector, fan motor failure and indoor unit
control board.
Indoor unit control
board
Indoor unit fan
motor
(Bad connection /
detached
connector)
H23 Indoor unit heat
exchanger
temperature sensor
error
This error code is displayed when the detected temperature of the indoor unit heat
exchanger temperature sensor is below -50°C or 149°C or higher for 5 consecutive
seconds. (The temperature is not detected during De-Icing.)
<Points of diagnosis>
1. This is an error code displayed when an improbable temperature is detected.
If the sensor is not open (
≥
500k
Ω
) or short-circuited (
≤
2.5k
Ω
), poor contact of the
connector or a failure of control board has occurred.
Indoor unit heat
exchanger
temperature sensor
(Bad connection /
detached
connector)
H27 Outdoor
temperature
sensor error
This error code is displayed when the detected temperature of the outdoor temperature
sensor is below -40°C or 150°C or higher for 5 consecutive seconds.
<Points of diagnosis>
1. This is an error code displayed when an improbable temperature is detected.
If the sensor is not open (
≥
500k
Ω
) or short-circuited (
≤
0.5k
Ω
), poor contact of the
connector or a failure of control board has occurred.
Outdoor
temperature sensor
(Bad connection /
detached
connector)
H28 Outdoor unit heat
exchanger
temperature sensor 1
error
This error code is displayed when the outdoor unit heat exchanger temperature sensor
1 is below -58°C or 107°C or higher for 5 consecutive seconds.
<Points of diagnosis>
1. This is an error code displayed when an improbable temperature is detected.
If the sensor is not open (
≥
500k
Ω
) or short-circuited (
≤
0.5k
Ω
), poor contact of the
connector has occurred.
Outdoor unit heat
exchanger
temperature
sensor 1
(Bad connection /
detached
connector)
Summary of Contents for CS-VE9NKE
Page 12: ...12 4 Location of Controls and Components 4 1 Indoor Unit 4 2 Outdoor Unit 4 3 Remote Control...
Page 13: ...13 5 Dimensions 5 1 Indoor Unit and Remote Control...
Page 14: ...14 5 2 Outdoor Unit...
Page 15: ...15 6 Refrigeration Cycle Diagram...
Page 16: ...16 7 Block Diagram...
Page 17: ...17 8 Wiring Connection Diagram 8 1 Indoor Unit...
Page 18: ...18 8 2 Outdoor Unit...
Page 19: ...19 9 Electronic Circuit Diagram 9 1 Indoor Unit...
Page 20: ...20 9 2 Outdoor Unit...
Page 21: ...21 10 Printed Circuit Board 10 1 Indoor Unit 10 1 1 Main Printed Circuit Board...
Page 22: ...22 10 1 2 Printed Circuit Board...
Page 23: ...23 10 2 Outdoor Unit 10 2 1 Main Printed Circuit Board...
Page 27: ...27...
Page 68: ...68 15 4 Self diagnosis Method 15 4 1 H11 Indoor Outdoor Communication Error Troubleshooting...
Page 69: ...69 15 4 2 H14 Indoor Unit Intake Air Temperature Sensor Error Troubleshooting...
Page 71: ...71 15 4 8 H53 Heat Storage Tank Temperature Sensor Error Troubleshooting...
Page 72: ...72 15 4 9 H16 Outdoor Unit CT Disconnection Error Troubleshooting...
Page 73: ...73 15 4 10 H19 Indoor Unit Fan Motor Lock Error Troubleshooting...
Page 75: ...75 15 4 12 H38 Brand not Corresponding Troubleshooting...
Page 76: ...76 15 4 13 H50 Ventilation Fan Motor Error Troubleshooting...
Page 77: ...77 15 4 14 H51 Filter Cleaning Nozzle Lock Error Troubleshooting...
Page 78: ...78 15 4 15 H59 Infrared Sensor Error Troubleshooting...
Page 79: ...79 15 4 16 H67 NANOE Error Troubleshooting...
Page 80: ...80 15 4 17 H70 Sunlight Sensor Error Troubleshooting...
Page 81: ...81 15 4 18 H96 2 and 3 Way Valve Opening Failure Check Troubleshooting...
Page 82: ...82 15 4 19 H97 Outdoor Unit Fan Motor Lock Error Troubleshooting...
Page 83: ...83 15 4 20 H98 Indoor Unit Overpressure Protection Troubleshooting...
Page 85: ...85 15 4 22 F11 Cooling Heating Switching Error Troubleshooting...
Page 86: ...86 15 4 23 F16 Cooling Dry Switching Error Troubleshooting...
Page 87: ...87 15 4 24 F19 Heat Storage Cycle Error Troubleshooting...
Page 88: ...88 15 4 25 F90 PFC Protection Troubleshooting...
Page 89: ...89 15 4 26 F91 Refrigeration Cycle Error Troubleshooting...
Page 90: ...90 15 4 27 F93 Compressor Rotation Error Troubleshooting...
Page 91: ...91 15 4 28 F95 Overpressure Protection in Case of Cooling Error Troubleshooting...
Page 92: ...92 15 4 29 F96 Transistor Module Over temperature Protection Troubleshooting...
Page 93: ...93 15 4 30 F97 Compressor Over temperature Protection Troubleshooting...
Page 94: ...94 15 4 31 F98 Total Current Protection Control Troubleshooting...
Page 95: ...95 15 4 32 F99 DC Peak Operation Error Troubleshooting...
Page 127: ...127 Heating Characteristic Condition Room temperature 20 C DBT Piping length 5m Fh 37Hz...
Page 131: ...131 Heating Characteristic Condition Room temperature 20 C DBT Piping length 5m Fh 49Hz...
Page 134: ...134 18 Exploded View and Replacement Parts List 18 1 Indoor Unit...