Trane TVR Pro CO Series Service Manual page 32

high temperatures. It is performed for each compressor and inverter module.
Figure 3-5.5: Inverter module temperature protection control
T > 74 o
f
Compressor output reduced
T > 79 o
f
Inverter module temperature protection,
Notes:
1. T : Heat sink temperature
f
Figure 3-5.4: Compressor current protection control
Current ≥ Current
Compressor current protection, error code xH4(xL0) is displayed
Compressor model
Normal operation
C T < 71 o C
f
C
error code PL is displayed
Normal operation
Current < Current
max
LNB53
Current 48.5
max
T < 65 C
o
f
When PL protection occurs 3 times
in 100 minutes, the C7 error is
displayed. When a C7 error occurs, a
manual system restart is required
before the system can resume
operation.
31
max
LNB65
59