Table 1
:
Failure code list of indoor unit
Self diagnosis function
Our company provides considerate service for the customer and install various judgment systems to
indicate following abnormalities.
24
Failure description
4LED failure indication
Digital tube display Line controller display
3-phase electric phase sequence failure
E0
E0
Communication failure of indoor and outdoor units
Fast flashing of timing light
E1
E1
Room temperature sensor (
T1
) failure
Fast flashing of operation light
E2
E2
Failure of middle pipe temperature sensor (T2) of
Fast flashing of operation light
E3
E3
Failure of middle pipe temperature sensor (T2B) of
Fast flashing of operation light
E4
E4
Failure of outdoor unit
E5
E5
EEPROM failure of indoor unit
Slow flashing of defrosting light
E7
E7
Water fill protection
Fast flashing of alarm light
EE
EE
Communication failure of indoor unit and line controller
E9
E9
Stalling protection of indoor fan
F0
F0
Note: The fast flashing frequency of above indication lamps is 2.5Hz and the slow flashing frequency is 1Hz.
7.
Symptom analysis and treatment
Table 2: Parameter table for spot inspection of outdoor unit
The digital tube display the indoor unit amount connected and communicated with during standby
The digital tube displays the frequency value during operation of compressor; the digital tube displays"dF"
during defrosting;
No.
Display content
Remark
0
Normal
display
Current frequency/indoor unit amount
Display the starting amount when standby
1
1-
Outdoor unit local capacity
120,140,160
2
2-
Total capacity needs of indoor unit
3
3-
Total capacity demands after outdoor Unit
4
4-
Operation mode
0: Power OFF/air supply;2: Cooling;3: Heating;4: Forced cooling
5
5-
Actual running ability of outdoor unit
6
6-
Fan status
0-7
7
7-
T2/T2B on average
8
8-
T3 pipe temperature
9
9-
T4 environmental temperature
10
10-
T5 exhaust temperature
11
11-
Opening of the electronic expansion valve
Actual value = spot inspection display value x 8
12
12-
Primary side current
13
13-
Secondary circuit current
14
14-
Primary side voltage
15
15-
Secondary side voltage
Actual value = spot inspection display value x 4
16
16-
Sets of indoor units
17
17-
Number of working indoor units
18
18-
Last fault or protection code
No protection or fault display
19
19-
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Spot check over
