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SiBE01-503
Functions
Functions and Control
15
1.2
Fan Speed Control
for Indoor Units
Control Mode
The air flow rate can be automatically controlled depending on the difference between the set
temperature and the room temperature. This is done through phase control and Hall IC control.
For more information about
Hall IC
, refer to troubleshooting for fan motor on page 61.
Phase Steps
Phase control and fan speed control contains 7 steps:LL, L, LM, M, HM, H, and HH.
You can choose the airflow rate between L and HH with the remote controller
{
= The airflow rate is chosen from L-M-H tap when the fan setting button is set to automatic.
Note:
1. During powerful operation, fan operates at 1340-1390rpm.
2. Fan stops during defrost operation.
3. In time of thermostat OFF, the fan rotates at following speed.
Cooling : The fan keeps rotating at the set tap.
Heating : The fan rotates at LL tap.
Air Flow Rate
Control
for
Heating
The following drawing explains the principle for fan speed control for heating:
Air Flow Rate
Control for
Cooling
The following drawing explains the principle of fan speed control for cooling:
Step
LL
L
LM
M
HM
H
HH (Powerful)
Cooling
—
Heating
Thermostat OFF
Dry
L tap only
(900-1020rpm)
(R4721)
(R4722)
2˚C
3˚C
1˚C
L
M
H
Difference between
room and set
temperature
Phase control
Fan speed
(R4723)
2˚C
3˚C
1˚C
H
M
L
Fan speed
Phase control
Difference between
room and set
temperature
(R4724)
Summary of Contents for FTYN25DV3B ATY20DV2
Page 1: ...SiBE01 503 SPLIT Pair D Series Applied Models zNon Inverter Pair Heat Pump...
Page 5: ...SiBE01 503 iv Table of Contents Index i Drawings Flow Charts iii...
Page 10: ...SiBE01 503 List of Function 1 Part 1 List of Function 1 Functions 2...
Page 13: ...Functions SiBE01 503 4 List of Function...
Page 14: ...SiBE01 503 Specifications 5 Part 2 Specifications 1 Specifications 6...
Page 35: ...Control Specification SiBE01 503 26 Functions and Control...
Page 59: ...Instructions SiBE01 503 50 System Configuration...
Page 79: ...Check SiBE01 503 70 Service Diagnosis...
Page 117: ...Others SiBE01 503 108 Others...