Trouble shooting 10 OUTDOOR UNIT Error Method:
Discharge temp. sensor error
Indicate or Display:
Refer to error code table.
Detective Actuators:
Outdoor unit Main PCB
Discharge pipe temperature thermistor
Detective details:
When Discharge pipe temperature thermistor open or
Forecast of Cause :
1. Connector connection failure 2.Thermistor failure 3. Main PCB failure
Check Point 1 : Check connection of Connector
Check if connector is removed.
Check erroneous connection.
Check if thermistor cable is open.
>>Upon correcting the removed connector or
OK |
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Check Pointi t 2 :: Remove connector and check Thermistor resistance value |
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Thermistor Characteristics (Approx. value) |
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Temperature |
| 0°C | 5°C | 10°C | 20°C | 30°C |
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| (14°F) | (23°F) | (32°F) | (41°F) | (50°F) | (68°F) | (86°F) |
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Resistance Value (k | ) | 286.3 | 218.6 | 168.6 | 130.9 | 102.5 | 64.22 | 41.33 |
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Temperature |
| 40°C | 50°C | 60°C | 70°C | 80°C | 90°C | 100°C | 110°C | 120°C |
| (104°F)(122°F)(140°F)(158°F) (176°F)(194°F)(212°F)(230°F)(248°F) | |||||||||
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Resistance Value (k | ) | 27.26 | 18.40 | 12.68 | 8.909 | 6.375 | 4.639 | 3.430 | 2.573 | 1.956 |
If Thermistor is either open or shorted, replace it and reset the power. |
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OK |
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Check Poiintt 3 :: Check voltage of Main PCB (DC5.0V) |
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Make sure circuit diagram of outdoor unit and check terminal voltage at Thermistor (DC5.0V)
THERMISTOR |
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(PIPE) | BLACK |
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| BLACK |
| BLACK |
THERMISTOR | BLACK |
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(DISCHARGE) |
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THERMISTOR |
(OUTDOOR) |
BLACK |
BLACK |
11
22 CN71
33
44
11
22 CN70
33
If the voltage does not appear, replace Main PCB.
