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VII. Troubleshooting
Caution:
Make sure power is disconnected from the unit before connecting or disconnecting any port/connector on
the PC board to avoid any potential damage.
Table 33 - Troubleshooting Codes
Code
Definition
0E0
Communication error between ODUs (Displayed on the follower unit only)
0E2
Communication error between ODU and IDU
0E4
T3 or T4 temperature sensor error
0E5
Voltage protection
0E8
Incorrect ODU address
10H0 20H0
Communication error between main control chip and compressor drive chip
0H1
Communication error between main control chip and communication chip
0H2/0H3
Incorrect number of ODUs (Displayed on the header unit only)
0H7
Incorrect number of IDUs
0H8
High pressure sensor error
0Hb
Low pressure sensor error
10F1 20F1
PTC error
0F3
Temperature sensor (T5) error
0F4
Temperature sensor (T6) error
0F5
Temperature sensor (T7) error
0F6
Electronic expansion valve error
10Hd 20Hd
Follower unit error
0P1
Current leakage, Discharge temperature switch or High pressure protection
0P2 0H5
Low pressure protection
0P3
Over current protection for compressor
0P4 0H6
Discharge temperature protection
0P5
High temperature protection for pipe temperature
0P9 0H9
DC fan protection
0PL 0C7
High module temperature protection
L0~L9 10H4/20H4
Compressor INV module protection
A tL
Ambient temperature limit operation
42
Summary of Contents for 38VMA Series
Page 8: ...II Refrigerant Circuit 1 Refrigerant Circuit Diagram Figure 17 38VMA072 096 120HDS 8...
Page 9: ...Figure 18 38VMA144HDS 9...
Page 11: ...2 Functional Parts Layout Figure 19 38VMA072 096 120HDS 11...
Page 12: ...Figure 20 38VMA0144HDS 12...
Page 14: ...Figure 22 Cooling Oil Return 14...
Page 15: ...Figure 23 Heating Oil Return and Defrost 15...
Page 16: ...Figure 24 Heating Operation 16...
Page 17: ...b 38VMA144HDS Figure 25 Cooling Operation 17...
Page 18: ...Figure 26 Cooling Oil Return 18...
Page 19: ...Figure 27 Heating Oil Return and Defrost 19...
Page 20: ...Figure 28 Heating Operation 20...
Page 21: ...III Function and Control 1 Operation Mode Figure 29 Operation Mode 21...
Page 77: ...VIII Appendix 1 Wiring Diagram Figure 36 38VMA072 096 120HDS5 1 77...
Page 78: ...Figure 37 38VMA144HDS5 1 78...
Page 79: ...Figure 38 38VMA072 096 120HDS6 1 79...
Page 80: ...Figure 39 38VMA144HDS6 1 80...
Page 81: ...2 Electronic Control Box Layout Figure 40 38VMA072 096 120HDS5 1 Figure 41 38VMA144HDS5 1 81...
Page 82: ...Figure 42 38VMA072 096 120HDS6 1 Figure 43 38VMA144HDS6 1 82...
Page 83: ...Figure 44 Main control board layout Figure 45 ENC1 Outdoor unit addressing 83...
Page 84: ...Figure 46 ENC4 network addressing Figure 47 ENC3 S12 Indoor unit quantity setting 84...
Page 85: ...Figure 48 S5 Running mode priority setting Figure 49 S6 Auto addressing 85...
Page 86: ...Figure 50 S11 anti snow setting Figure 51 S16 Mode setting 86...
Page 87: ...Figure 52 S17 Heating mode setting Figure 53 S18 Cooling mode setting 87...
Page 93: ...Figure 55 Control Board Views 93...
Page 97: ...2 38VMA144HDS5 1 Figure 56 3 Phase Heat Pump Exploded View 97...
Page 98: ...98...
Page 99: ...Figure 57 Control Board Views 99...
Page 103: ...3 38VMA072HDS6 1 38VMA096HDS6 1 38VMA120HDS6 1 Figure 58 3 Phase Heat Pump Exploded View 103...
Page 104: ...Figure 59 Control Board Views 104...
Page 108: ...4 38VMA144HDS6 1 Figure 60 3 Phase Heat Pump Exploded View 108...
Page 109: ...109...