2
Error
code
Malfunction Description Diagnosis and Analysis 5HPDUN
19
DC voltage or AC voltage
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WKDQ9$&(1 phase) RUGULYHUPRGXOHJHWKLJK'&
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20
Indoor pipe temperature too
high protection
Indoor pipe temperature Tm over 63°C, error clear
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than 52°C.
5HVXPDEOH
21
Indoor pipe sensor
WHPSHUDWXUHWRRORZ
protection
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prevent indoor heat exchange system icing and to
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time
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22 PFC circuit loop overcurrent
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circuit loop.
Non-resumable
23
Temperature too high for
compressor driver module
Compressor driver module’s PIM temperature over
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24 Compressor start failure
Compressor start failure been detected by driver
driver module or wrong compressor writing.
1RQUHVXPDEOH
25
Input overcurrent of the
drive module
Input current of the compressor drive module higher
WKDQEEPROM settingGetails refer to service manual,
/RFNLIit occurs 3 times in 1 hour.
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26
Lack phase of the drive
module
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SKDVHW\SH
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27
Input current sampling
circuit fault
The driver module’s input current sampling circuit
damaged.
Non-resumable
28 1RZLULQJRIWKHFRPSUHVVRU 1RZLULQJEHWZHHQFRPSUHVVRUDQGLW¶VGULYHUPRGXOH 1RQUHVXPDEOH
37
Compressor overcurrent
detected by compressor
driver module
Compressor phase U or V or W over current detected
by compressor driver module (details refer to service
manual)
Non-resumable
38
Drive module’s ambient
temp, sensor abnormal
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&WR&
5HVXPDEOH
39
0LGFRQGHQVHUWHPS
sensor TC abnormal
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&WR&
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42
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abnormal
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detected open circuit for 30seconds, Error lock if it
occurs 3 times in 1 hour.
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43
/RZSUHVVXUHVZLWFK
abnormal
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GHWHFWHGXQFRQQHFWHGIRUVHFRQGVRUXQFRQQHFWHG
for 30seconds at standby.
1RQUHVXPDEOH
44
Outdoor condenser
temperatureTC too high
protection
The maximum temperature value of Tc and Te is over
65 °C, Error lock if it occurs 3 times in 30 minutes.
1RQUHVXPDEOH
45
6\VWHPORZSUHVVXUH
protection
The minimum temperature value of indoor pipe Tm
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minimum temperature value of outdoor Tc and
outdoor 7HLVORZHUWKDQ& at heating mode.
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Note:
1. The ou.tdoor control board’s LED3 indicates the outdoor error code, for example, the error code 12, LED3 will
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2. NO-resumable means error will not clear unless: a. clean out the fault factor b. Cut the power supply off and
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3. 7KHLQGRRUXQLWFDQDOVRLQGLFWHVWKHRXWGRRUPDOIXFWLRQFRGHWRR3OHDVHUHIHUWRLQGRRUXQLWPDQXOWRJHWWKH
method.