30
T3
Resume
Off
Decrease
Hold
17.5.7 Outdoor unit anti-freezing protection
When T2<4
℃
for 250 seconds or T2<0
℃
, the indoor unit capacity demand will be zero and resume to
normal when T2>8
℃
and the time of protection is no less than 3 minutes.
17.5.8 Oil return
Running rules:
1. If the compressor frequency keeps lower than setting frequency for setting time, the AC will rise the
frequency to setting frequency for setting time and then resume to former frequency.
2. The EXV will keep 300p while the indoor units will keep the current running mode.
If the outdoor ambient is higher than setting frequency during the oil return, the AC quit oil return.
17.5.9 Low outdoor ambient temperature protection
When compressor is off, T4 is be lower than -35
℃
.for 10s, the AC will stop and display
“LP”.
When compressor is on, T4 is be lower than -40
℃
.for 10s, the AC will stop and display
“LP”.
When T4 is no lower than -32
℃
.for 10s, the unit will exit protection.
Summary of Contents for 38QUS014D8S2 Series
Page 1: ...SUPER INVERTER SERIES MULTI TYPE Service Manual 2018...
Page 9: ...1...
Page 21: ...13 3 3 Console 16 Drain pipe 195 Hanging arm 700 600 210...
Page 24: ...16 4 3 Console 4 4 Hi wall...
Page 25: ...17 5 Wiring diagram 38QUS018D8S2...
Page 27: ...19 38QUS036D8S4 38QUS042D8S5...
Page 29: ...21 42QSS009D8S 42QSS012D8S 42QZA012D8S...
Page 42: ...11...