Daikin GQI-Eco Series, Service Manual

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ESIE15-13B Function Details
Function and Control 41
3.2.10 Night-time Quiet Operation
A. Setting by Remote Controller
Night-time quiet operation can be set by field setting from the wired remote controller.
By estimating current time based on the change of outdoor air temperature, the low noise
operation is automatically performed at night (from 22:00 to 8:00) by limiting the number of
revolutions of outdoor unit fan and the operation frequency of the compressor. (The time at
night is target.)
B. Setting by Demand Operation (Option)
Short circuit between COM-LNOP on terminal of demand adaptor.
Low sound running to be done with limited outdoor fan speed compressor running
frequency.
Note:
In the case of capacity priority setting
Setting the "Capacity priority setting" from the field setting mode of indoor remote controller, the
capacity is prioritized in the operations of both A and B, and when the air conditioning load
becomes high, the low noise operation stops and the normal operation starts.
If you cancel the capacity priority setting when the low noise setting remains, the low noise
setting is prioritized, and even if air conditioning load becomes high, the noise operation
continues.
3.2.11 Low Pressure Protection Control
In order to prevent abnormal low pressures in the system, the below control function will be
activated.
Lp < 0.12 MPa
&
(Cooling) (Heating)
&
• Lp > 0.15 MPa
• 30 sec elapsed
• &
• OR
• Lp < 0.12 MPa
Normal operation
Compressor upper limit frequency
RZQG71L: 57 Hz
RZQG100-140L: 54 Hz
Compressor upper limit frequency
RZQG71L: 57 Hz
RZQG100-140L: 54 Hz
6 times or less
stopping in 200 minutes
• LPS activated
• Lp < 0.12 MPa continues
for 5 minutes
• Lp < 0.12 MPa continues
for 1 minute
• Lp < 0.12 MPa continues
for 10 seconds
• Lp > 0.15 MPa continues
for 10 seconds elapsed
• Lp > 0.15 MPa continues
for 1 minute
• From the starting to
within 5 minutes after
the startup control stops
• Within 10 minutes after
defrosting
Compressor stop: 0 Hz
Abnormal stop (E4 indication)
Stopped 7 times in 200 minutes
Condition E* : OR
• 5 minutes after starting
• Lp > 0.15 MPa continues for 1 minute
Condition E
Condition E
Condition E
Lp > 0.15 MPa
Compressor upper limit frequency
10 steps
Compressor upper limit frequency
20 steps
Normal operation
• 10 minutes elapsed after
defrosting
OR