Trouble shooting 11 OUTDOOR UNIT Error Method:
Outdoor unit Heat Ex. liquid temp. sensor error
Indicate or Display:
Refer to error code table.
Detective Actuators:
Outdoor unit Main PCB
Heat exchanger temperature thermistor
Detective details:
When Heat exchanger 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
Check Pointi t 2 :: Remove connector and check Thermistor resistance value
Thermistor Characteristics (Approx. value)
Temperature |
| 0°C | 5°C | 10°C | 20°C | 30°C | ||||
| (14°F) | (23°F) | (32°F) | (41°F) | (50°F) | (68°F) | (86°F) | |||
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Resistance Value (k | ) | 27.21 | 20.80 |
| 16.05 |
| 12.47 | 9.775 | 6.129 | 3.947 |
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Temperature |
| 40°C | 50°C |
| 60°C |
| 70°C | 80°C |
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| (104°F) | (122°F) | (140°F) | (158°F) | (176°F) |
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Resistance Value (k | ) | 2.606 | 1.759 |
| 1.213 |
| 0.8531 | 0.6115 |
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If Thermistor is either open or shorted, replace it and reset the power.
OK
Check Poiintt 3 :: Check voltage of Main PCB (DC5.0V)
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.
