Outdoor Unit Pcb Photo, Dip Switch Setting And Function - Trane 4TXM2318BF300AA Service Manual

o
In cooling mode: In 24 C cooling mode, press SLEEP(or SWING) button 7 times continuously within 5 seconds,
indoor buzzer sounds twice, that shows temp. compensation works. Switch on the unit in
heating mode by the remote controller, press TEMP button to set the set temp., so temperature
compensation=24 o C-the current set temp. For example, if the set temp is 24
o
the set temp. is 23 C, the temp. compensation is -1
If you want to cancel it, set the temp as 24
So the temp. compensation range is +8
Anti-Freezed Protection
When compressor has run for over 5 minutes, to prevent indoor evaporator freezing (in cooling/dry mode), if indoor
mid-coil temp is below -1 degree for over 5 minutes, indoor EEV will close, and compressor will stop. When indoor
mid-coil temp is over about 10 degree, the unit will be normal.
Overload Protection in Heating Mode
It is valid only in heating mode, if indoor mid-coil temp. is over about 65 degree continuously for 10 seconds, indoor
will stop; while when indoor mid-coil temp. is below 52 degree for 3 seconds, indoor will resume.

6.5 Outdoor unit PCB Photo, Dip Switch Setting and Function

Outdoor unit PCB Photo and Dip Swith Setting
Model
4TXM2318BF300AA
4TXM2324BF300AA
4TXM2330BF400AA
4TXM2336BF500AA
4TXM2342BF500AA
o
C. The max. compensation temp is -8
o
C.
o o
C~-6 C.
PCB
0151800364D
0151800364D
0151800364C
0151800364C
0151800364C
113
o C, the temp. compensation is 0
o
C (the set temp is 16
Power Module
0011800377C
0011800377AJ
0011800377AAA
0011800377AAA
0011800377AAA
o C; if
o
C).