Chff^j\bZe Abj Chg]blbhg^j
z
38
z
Press [check] button, ICR01 will show the diagnostic code, when unit * is in error, and choose the number in
ICR01, you will see the diagnostic code, and if not select the error units, the error u
nits number will be
flashing.
Diagnostic code for outdoor master unit
20
Outdoor defrost temp. sensor TE error
21
Outdoor ambient temp. Sensor TA error
22
Outdoor suction temp. sensor TS error
24
Outdoor oil temp. sensor Toil error
The temp. tested from sensor is keeping lower than
-60.87
or higher than 135.4
for 60 seconds, and
system will automatically change to backup running mode.
23
Outdoor discharge temp. Sensor TD
error
The temp. tested from sensor is keeping lower than
-4.45
or higher than 337.14
for 60 seconds, and
system will automatically change to backup running mode.
25
Master compressor current is over high
Signal comes from MCU 840
26
Communication error between indoor
and outdoor unit
Outdoor didn ¯t fi nd any i ndoor uni
27
Compressor oil temp. is over-high
Oil temp. is keep higher than 90
for 5 minutes, when the
temp. is lower than 75
, the alarm will be disappeared
automatically.
28
Master unit high pressure sensor error
29
Master unit low pressure sensor error
The signal voltage is higher than 4.9V, or lower than 0.1V
for 30 seconds
30
High
pressure
switch
alarms
for
over-high pressure
31
Low
pressure
switch
alarms
for
over-high pressure or over-low pressure
The switch keep open for 1 minute, alarm, if switch keep
short-connecting for over 1 minute, the alarm will be gone
automatically
32
Inverter IPM problem
Signal comes from MCU 840
33
Master unit PCB MB89F538 EEPROM
error
EEPROM data is lost or is installed in wrong way.
34
Outdoor compressor discharge temp.
sensor alarms
Discharge temp. sensor TD1 temperature is higher than
125
for 10 seconds
when lower than 100
, resume
35
The
protection
part
in
inverter
compressor is acted
Check the part in compressor.
37
Master unit high/low pressure sensor is
installed in wrong turn
In the first 3 minutes of compressor running, Pd/Ps<1 for
over 60 seconds
39
Master unit low pressure sensor alarms
Cooling: Ps< 0.2kgG/cm
2
for 30 seconds, alarm
Heating: Ps <-0.2kgG/cm
2
for over 10 minutes, alarm.
40
High pressure sensor alarms
Pd>28.5kgG/cm
2
for over 30 seconds
41
Suction temp. sensor TS alarm
TS>40
for over 10 minutes
42
Current over-high
Signal is higher than setting Max. current for 5 seconds
Содержание YR-H71
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