Troubleshooting - Carrier 38VMA Series Service Manual

VII. Troubleshooting
Caution:
Make sure power is disconnected from the unit before connecting or disconnecting any port/connector on
Table 33 - Troubleshooting Codes
the PC board to avoid any potential damage.
Code
0E0
0E2
0E4
0E5
0E8
10H0 20H0
0H1
0H2/0H3
0H7
0H8
0Hb
10F1 20F1
0F3
0F4
0F5
0F6
10Hd 20Hd
0P1
0P2 0H5
0P3
0P4 0H6
0P5
0P9 0H9
0PL 0C7
L0~L9 10H4/20H4
A tL
Communication error between ODUs (Displayed on the follower unit only)
Communication error between ODU and IDU
T3 or T4 temperature sensor error
Voltage protection
Incorrect ODU address
Communication error between main control chip and compressor drive chip
Communication error between main control chip and communication chip
Incorrect number of ODUs (Displayed on the header unit only)
Incorrect number of IDUs
High pressure sensor error
Low pressure sensor error
PTC error
Temperature sensor (T5) error
Temperature sensor (T6) error
Temperature sensor (T7) error
Electronic expansion valve error
Follower unit error
Current leakage, Discharge temperature switch or High pressure protection
Low pressure protection
Over current protection for compressor
Discharge temperature protection
High temperature protection for pipe temperature
DC fan protection
High module temperature protection
Compressor INV module protection
Ambient temperature limit operation
Definition
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