Trane 4TXK6512G1000AA Service Manual page 164

9.4 Oudoor unit function
9.4.1 Compressor discharge temp. (TD) high temp. protection function.
Discharge temperature
Td
115°C
112°C
108°C
°C
105°C
C 95°C
C 93°C
9.4.2 Condenser overheat protection
When cooling, compare TC with TE. Choose the bigger one, TC'. TC'=MAX.[TC, TE]. You can control the
TC'_cooling
high pressure
65°C
64°C
61°C
59°C
55°C
through controlling TC'.
If it lasts 3 seconds, the unit will stop. After standing
by 3 minutes, the unit can restart. If it happens 3
times in 60 minutes. The unit will stop and alarm. it
will disappear if the unit back to power.
Fast frequency reduction 2HZ/S
a e y c
q
Fast frequency reduction 1HZ/S
Fast frequencrion 1HZ/10S ast
frequenc r ion 1HZ/S
y educt
Keep frequency
ast frequency r
Slow fre up 1HZ/10S
eep fre
quency
Common control
If it lasts 5 seconds, the unit will stop and alarm.
After standing by 3 minutes, unit can restart. If it
happens 3 times in 30
Fast frequency reduction 2
alarm. It will disappear
Fast frequency reduction 2
Slow frequency reduction
Keep frequency
Slow frequency up 1HZ/10
minutes, unit also stop and
HZ/ S
e unit back to power.
if th
HZ/S
1HZ/10S
S