Trane 4TVH0086FE000AA Service Manual page 75

Table 6-1.1: Error code table (continued)
Error
code
1
PL Inverter module temperature protection
PP Compressor discharge insufficient superheat protection
xL0 Inverter module protection
xL1 DC bus low voltage protection
xL2 DC bus high voltage protection
xL4 MCE error
xL5 Zero speed protection
xL7 Phase sequence error
Compressor frequency variation greater than 15Hz within one
xL8
second protection
Actual compressor frequency differs from target frequency by
xL9
more than 15Hz protection
Notes:
1. 'x' is a placeholder for the compressor system (compressor and related electrical components), with 1 representing compressor system A and 2 representing
compressor system B. 'y' is a placeholder for the address (1 or 2) of the slave unit with the error.
2. For some error codes, a manual restart is required before the system can resume operation.
3. Once the EXV has been connected properly, the error code will flash to indicate that the connection has been re-established. A manual restart is then
required before the system can resume operation.
2 Troubleshooting
2.1 Warning
Warning
 All electrical work
accredited professionals and in accordance with all applicable legislation (all national, local and other laws,
standards, codes, rules, regulations and other legislation that apply in a given situation).
 Power-off the outdoor units before connecting or disconnecting any connections or wiring, otherwise electric
shock (which can cause physical injury or death) may occur or damage to components may occur.
Content
must be carried
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
out by competent
74
Remarks
and suitably qualified,
Manual re-start
required
2
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
certified and