Quit condition of oil return:
1 minute later after oil return is over
＆ Td‐Tcm＞30℃
OR OR Ts‐Tc＞30℃
Tc＜‐35℃
Max. 10 minutes
Oil return procedure in heating mode:
Quit condition of oil return
Max. 9 minutes（E）
OR OR Td‐Tcm＜20℃ for 30s（5 minutes later, begin to count）
＆
T s ‐Tc＜15℃ for 30 S（5 minutes later, begin to count）
Running for min. 5 minutes（E）
Send oil return signal oil return beginning oil return over
Inverter compressor indicated FQY 60s oil return frequency 120s
Soft startup
0HZ
0HZ
5s
outdoor motor auto auto
auto（TC control）
4-way valve ON
OFF
15s
450pulse 450 pulse
300pulse （E）
PMV auto open angel auto open angle
all indoor motor ON
OFF anti-freeze startup
Quit condition of oil return:
Oil return procedure in heating mode:
Quit condition of oil return
OR
OR
OR
OR
Max.9 minutes (E)
Max.10 minutes
Running for min.5 (E)
1 minutes later after oil return is over
Td-Tcm
＜
20°C for 30s (5 minutes later, begin to count)
Td-Tcm
＞
30°C
Ts- Tc
＜
15°C for 30s (5 minutes later, begin to count)
Ts- Tc
＞
30°C
Ts- Tc
＜
-35°C
&
&
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