koppel KV24 ODU-ARF21C Service Manual page 100

Control Function
Electrical
25 Indoor room temp. of 1# indoor unit
26 Indoor room temp. of 2# indoor unit
27 Average of Indoor room temp.
28 Shutdown reason
29 T2B of 1# indoor unit
30 T2B of 2# indoor unit
Appendix
Shutdown Reason
Frequency limit caused by current
Frequency limit caused by T2.in cooling
Frequency limit caused by T2.in heating
Reach to the setting temperature
Frequency limit caused by T4.
Defrosting
Mode switching
High discharge temperature protection
High evaporator coil temp.T2 protection
Evaporator low temperature T2 protection
Condenser high temperature T3 protection
Low indoor room temperature protection in drying mode
Too low ambient temperature protection
Refrigerant leakage detection
Communication malfunction between indoor and outdoor units
Communication error between outdoor main chip and compressor driven chip IR341
AC voltage protection
Top temperature protection of compressor
Outdoor EE Malfunction
Fan speed has been out of control
Open or short circuit of temperature sensor
Overcurrent protection
IMP overcurrent protection
Compressor lack of phase
Compressor has been out of control
Low pressure protection of 311
Fan current protection
Fan lack of phase
Fan zero speed protection
PFC module protection
High pressure protection of 311
Zero speed malfunction
PWM malfunction
MCE malfunction
Compressor overcurrent protection
Compressor EE malfunction
Compressor start-up malfunction
311 fan speed has been out of control
Low pressure protection
High pressure protection
PFC module malfunction
98
If the temp. is lower than -9 degree, the digital display tube will
show "9".If the temp. is higher than 70 degree, the digital
display tube will show "70". If the capacity demand is 0, , the
digital display tube will show "0. If the indoor unit is not
connected, the digital display tube will show: "――"
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". If the capacity demand is 0, , the
digital display tube will show "0. If the indoor unit is not
connected, the digital display tube will show: "――"
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".
Refer to Appendix
If the temp. is lower than -9 degree, the digital display tube will
show "9".If the temp. is higher than 70 degree, the digital
display tube will show "70". If the capacity demand is 0, , the
digital display tube will show "0. If the indoor unit is not
connected, the digital display tube will show: "――"
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". If the capacity demand is 0, , the
digital display tube will show "0. If the indoor unit is not
connected, the digital display tube will show: "――"
Code
1
2
3
4
5
6
7
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
Electrical Control System