18
If the outdoor ambient temperature is higher than
the set frequency during oil return, the unit stops
the oil return process.
5.3.11 Low Outdoor Ambient Temperature
Protection
When the compressor is off and T4 is lower than -
35℃ for 10 seconds, the unit stops and displays
“LP.”
When the compressor is on and T4 remains lower
than -40℃ for 10 seconds, the unit stops and
displays “LP.”
When T4 is no lower than -32℃ for 10 seconds,
the unit exits protection.
5.4 Control and Functions
5.4.1 Capacity Request Calculation
Cooling Mode:
Note: The final result is an integer.
Use the following table and final capacity
request to confirm the operating frequency.
Amendatory
capacity
demand.
The maximum running frequency is adjusted
according to the outdoor ambient temperature
Heating Mode
Note: The final result is an integer.
Then modify it according to a T2 average
(correction):