Eco Air CTBU-09HWFN1-M(C), Service Manual, Page: 116 / 219

113
For 36K-60K Outdoor Unit
No Problems Error Code
1 Communication malfunction between indoor and outdoor units E1
2 Current overload protection F0
3 Outdoor ambient temperature sensor (T4 ) malfunction F1
4 Condenser coil temperature sensor (T3) malfunction F2
5 Compressor discharge temperature sensor (T5) malfunction F3
6 Outdoor unit EEPROM parameter error F4
7 Outdoor fan speed malfunction F5
8 Inverter module (IPM) malfunction P0
9 Over-voltage or under-voltage protection P1
10
Compressor top high temperature protection (OLP) P2
11 Low ambient temperature cut off in heating P3
12 Compressor drive malfunction P4
13 High temperature protection of indoor coil in heating J0
14 Outdoor temperature protection of outdoor coil in cooling J1
15 Temperature protection of compressor discharge J2
16 PFC module protection J3
17 Communication malfunction between control board and IPM board J4
18 High pressure protection J5
19 Low pressure protection J6
20
Outdoor IPM module temperature sensor malfunction
P7
21 AC voltage protection J8
Outdoor check function
N Display Remark
00 Normal display
Display running frequency, running state or malfunction
code
01 Indoor unit capacity demand code
Actual data*HP*10
If capacity demand code is higher than 99, the digital display
tube will show single digit and tens digit. (For example, the
digital display tube show “5.0”,it means the capacity demand
is 15. the digital display tube show “60”,it means the
capacity demand is 6.0)
02 Amendatory capacity demand code
03
The frequency after the capacity requirement
transfer
04 The frequency after the frequency limit
05 The frequency of sending to 341 chip
06 Indoor unit evaporator temperature
If the temp. is lower than 0 degree, the digital display tube
will show “0”.If the temp. is higher than 70 degree, the digital
display tube will show “70”.
07 Condenser pipe temp.(T3) If the temp. is lower than -9 degree, the digital display tube