Hisense 88FZBpC, Maintenance Manual, Page: 20 / 37

Page 19 of 36
七、
AFTER SERVICE
8.1 Trouble List
8.1.1
When the compressor is in operation, The 3 LED indicator lights on the
control panel of the outdoor unit indicates the causes of the restriction on the
compressor’s current operating frequency
Symbols for indicator light:
★
: ON
Ο
: flashing
×
: OFF
LED1 LED2 LED3
The cause of the restriction on the compressor’s current operating frequency
1
Ο Ο Ο
Normal frequency ascent and descent with no restriction on the frequency
2
× ×
★
Frequency descent or restriction on frequency ascent caused by over
current
3
×
★ ★
Frequency descent or restriction on frequency ascent caused by
anti-freeze in cooling or overload control in heating
4 ★
×
★
Frequency descent or restriction on frequency ascent caused by too high
compressor discharge temperature
5
×
★
×
Restriction on maximum operation operating frequency caused by too low
voltage on the supply circuit
6 ★ ★ ★
Operating at a fixed frequency (when in a capacity measurement or forced
operation at a fixed frequency.)
7
×
★
Ο
Outdoor anti-overload protection Frequency descent or restriction on
frequency
8.1.2 When the compressor is interrupted, the outdoor LEDs are used to indicate
the troubles listed below:
Symbols for indicator light: ★ : ON
Ο
: flashing
×
: OFF
LED1 LED2 LED3 Troubles
1
× × ×
Normal
2
× ×
★
Room temperature sensor short-circuited, open circuited or the
corresponding test circuit in trouble
3
×
★
×
Indoor heat exchanger temperature sensor short-circuited, open circuited
or the corresponding test circuit in trouble
4
★
× ×
Compressor temperature sensor short-circuited, open circuited or the
corresponding test circuit in trouble
5
★
×
★
Outdoor heat exchanger temperature sensor short-circuited, open
circuited or the corresponding test circuit in trouble
6 ★ ★
×
Outdoor atmosphere temperature sensor short-circuited, open circuited
or the corresponding test circuit in trouble
7
Ο
★
×
CT (mutual inductance coil) short circuit, open circuit or detection
circuit fault
8
Ο ×
★
Outdoor voltage detection circuit fault
9
× × Ο
Signal communication abnormal (indoor – outdoor)
10
× Ο ×
Power module (IPM)protection
11 ★
Ο
★ Maximum current control
12 ★
Ο ×
Current overload control
13
× Ο
★ Compressor discharge temperature too high
14
★ ★
Ο
Over and under-voltage control
15
★
Ο Ο
Outdoor ambient temperature protection (only KFR-2820GW/BP)
16
17
Ο
★ ★
Refrigerant leak (not yet available)
18
×
★
Ο
Compressor housing temperature too high
19 ★ ★ ★ Outdoor memory in trouble
20
×
Ο Ο
Indoor fan motor in trouble