Turbo Air TAS-09EH/O, Руководство по обслуживанию, Страница: 43 / 62

43 SERVICE MANUAL FOR AMERICA
八．
Control of oil return circle
1.
Oil return circle period
When air conditioner has run for 10 minutes or accumulate time T
msro
is end, it execute oil return
circle once.
2. When compressor is running to oil return circle, the indoor unit which have communication is
return oil, expand valve is open fully and compressor’s frequency increase more than 3/5 of
max frequency for 90 seconds, the expand valve of indoor unit which no communication is close.
九．
Operation mode control of outdoor unit
（
dehumidify
、
cooling or heating
）
The indoor unit can require cooling mode and dehumidify mode together, but it can’t require cooling mode or
dehumidify with heating mode together, the outdoor unit operate state is decided by the indoor unit which is applied
first.
十．
Protect function
：
1. Delay protection of compressor
The compressor can’t run after it stop within 3 minutes.
2. Fault protection of module
The air conditioner stop running immediately and display error code if the module is
fault.
3. Protection of communicate fault
The control of outdoor unit can connect with all indoor units, when it power on, it
sent data to each indoor unit continuously, if it receive a correct data from correspond
indoor unit, then the indoor unit is exist. when the control of outdoor unit didn’t
receive communication data from indoor unit which is exist within 30 seconds, it will
display communication fault. If all communication channels are failure, air
conditioner will shutdown and display fault code.