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Electrical Control Function
Electrical Control System
106
If the indoor unit is not connected, the digital display shows:
“――”
27
Average of indoor room temperature
If the temperature is lower than 0
℃
, the digital display shows
“0”.
If the temperature is higher than 70
℃
, the digital display
shows “70”.
28
Shutdown cause
Refer to Appendix
29
T2B of #1 indoor unit
If the temperature is lower than -9
℃
, the digital display shows
“9”.
If the temperature is higher than 70
℃
, the digital display
shows “70”.
If the capacity demand is 0, the digital display shows “0”.
If the indoor unit is not connected, the digital display shows:
“――”
30
T2B of #2 indoor unit
If the temperature is lower than 0
℃
, the digital display shows
“0”.
If the temperature is higher than 70
℃
, the digital display
shows “70”.
If the capacity demand is 0, the digital display shows “0”.
If the indoor unit is not connected, the digital display shows:
“――”
Appendix
Shutdown Causes
Code
Frequency limit caused by current
1
Frequency limit caused by T2 in cooling
2
Frequency limit caused by T2 in heating
3
Preset temperature reached
4
Frequency limit caused by T4
5
Defrosting
6
Mode switching
7
High discharge temperature protection
9
High evaporator coil temperature T2 protection
10
Evaporator low temperature T2 protection
11
Condenser high temperature T3 protection
12
Low indoor room temperature protection in drying mode
13
Low
ambient
temperature protection
14
Refrigerant leakage detection
15
Communication malfunction between indoor and outdoor units
16
Communication error between outdoor main chip and compressor driven chip IR341
17
AC power input voltage protection
18
Top temperature protection of compressor
19
Outdoor EE Malfunction
20
Fan speed malfunction
21
Temperature sensor open or short circuit
22
Overcurrent protection
23
IMP overcurrent protection
24
Compressor lack of phase
25
Compressor malfunction
26
Low pressure protection of 311
27
Fan current protection
28
Fan lack of phase
29
Fan zero speed protection
30
PFC module protection
31
High pressure protection of 311
32
Zero speed malfunction
33
PWM malfunction
34
MCE malfunction
35
Summary of Contents for 38QUS012D8S
Page 1: ...Contents i Energy Related Products SUPER DC INVERTER SERIES Service Manual...
Page 13: ...Service Space Indoor Units 11 3 Service Space 1000mm 1000mm 1000mm 1000m m Chart 3...
Page 16: ...Air Velocity Distributions Reference Data Indoor Units 14 30 42K Cooling Heating...
Page 17: ...Air Velocity Distributions Reference Data Indoor Units 15 48 55K Cooling Heating...
Page 22: ...Field Wiring Indoor Units 20 10 Field Wiring 42QTD018R8S 42QTD024R8S 42QTD036R8S...
Page 23: ...Field Wiring Indoor Units 21 42QTD048R8S 42QTD060R8S...
Page 29: ...Features Indoor Units 27...
Page 46: ...Service Space Indoor Units 44 3 Service Space...
Page 61: ...Wiring Diagrams Outdoor Units 59 3 Wiring Diagrams 38QUS018R8S...
Page 62: ...Wiring Diagrams Outdoor Units 60 38QUS024R8S...
Page 63: ...Wiring Diagrams Outdoor Units 61 38QUS036R8S...
Page 64: ...Wiring Diagrams Outdoor Units 62 38QUS036R8T...
Page 65: ...Wiring Diagrams Outdoor Units 63 38QUS048R8T 38QUS060R8T...
Page 87: ...Refrigerant pipe installation Installation 85...