Outdoor Unit Low Noise Operation - Fujitsu RDG30KHTAP Service Instruction

6-10. Outdoor unit low noise operation

The compressor frequency and outdoor unit fan speed are limited to reduce the operation noise by
external input.
Low noise mode
AOYG30KBTB
AOYG36KBTB
AOYG45KBTB
AOYG54KBTB
NOTES:
• During the defrost operation, the compressor operates by the speed for defrost operation.
• Even during the low noise operation, the operations of current overload, economy, and peak cut
are effective and the outdoor unit operates by lowest current of them.
Capacity priority mode
• Operation condition
The function setting is set to 1.
• Capacity check condition
– Shortage: Compressor frequency > limited compressor frequency for low noise mode
– Enough: Compressor frequency ≤ limited compressor frequency for low noise mode
• Operation
When detecting the shortage capacity or enough capacity condition continuous 30 minutes, the
mode is changed as follows:
– Automatic switching 1 (Level 1 setting)
– Automatic switching 2 (Level 2 setting)
6-10. Outdoor unit low noise operation
Low noise mode
Cooling/Dry
Level 1
Heating
Cooling/Dry
Level 2
Heating
Cooling/Dry
Level 1
Heating
Cooling/Dry
Level 2
Heating
Low noise mode 1
Shortage for 30 min
Low noise
mode 2
Enough for 30 min
Outdoor fan speed
rpm
830
700
830
700
740
600
740
600
Shortage for 30 min
Normal operation
Enough for 30 min
Shortage for 30 min
Low noise
mode 1
Enough for 30 min
- (01-29) -
Compressor
frequency
rps
44
44
36
36
60
60
40
40
Normal
operation
6. Various control