Daikin RZQ100B8V3B Service Manual page 126

Outdoor Unit Functional Concept
3.3.1 Starting Frequency Control
1
Outline
2
General
3
Graph
4
5
Ending condition
2–42
The inverter compressor will start up with a limited fixed frequency value for a specified period of time
in order to prevent liquid back to the compressor, and to limit the starting current.
The normal starting control time is 2~3 minutes. The maximum starting frequency control time is
limited to 10 minutes.
During compressor start-up, a pressure difference will be build up in order to have sufficient pressure
difference for the 4-way valve to change over.
Hz
71 class: 73 Hz
100~140-class: 107 Hz
Step 1
The starting control will be terminated when the low pressure value < 6 bar or when the maximum
starting time of 10 minutes has been reached in case the low pressure value stays > 6 bar.
ON ± 1 min
2~3 min
ESIE05-03
Normal control
time
Part 2 – Functional Description