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ASY50-KM
Fujitsu ASY50-KM Service Manual
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
Coo
l a
ir
pre
vent
ion
co
ntr
ol
(hea
tin
g m
ode
)
The maximum value of the indoor fan speed is set as shown below, based on the detected tempera-
ture by the indoor heat exchanger sensor on heating mode.
•
Normal operation
42°C
Indoor heat exchanger
temperature rises
Setting fan mode*
Cool air prevention
S-LOW
Indoor heat exchanger
temperature drops
39°C
37°C
30°C
37°C
34°C
32°C
24°C
MED+
or setting fan mode*
LOW
or setting fan mode*
*: Lower speed is selected.
13 minutes later:
42°C
Indoor heat exchanger
temperature rises
Setting fan mode*
Indoor heat exchanger
temperature drops
39°C
37°C
30°C
37°C
34°C
32°C
24°C
MED+
or setting fan mode*
LOW
or setting fan mode*
*: Lower speed is selected.
LOW
or setting fan mode*
LOW
or setting fan mode*
3-1. Indoor fan control
- (04-24) -
3. Fan control
CONTROL AND
FUNCTIONS
CONTROL AND
FUNCTIONS
353
355
Table of Contents
Table of Contents
219
E: 77. Heat Sink Thermistor Error (Outdoor Unit)
279
E: 86. High Pressure Switch Error (Outdoor Unit)
280
E: 94. over Current Error (Outdoor Unit)
281
E: 95. Compressor Motor Control Error (Outdoor Unit)
283
E: 97. Outdoor Unit Fan Motor Error (Outdoor Unit)
284
E: 99. 4-Way Valve Error (Outdoor Unit)
285
E: 9A. Coil 1 (Expansion Valve 1) Error
287
E: A1. Discharge Temperature Error (Outdoor Unit)
288
E: A3. Compressor Temperature Error (Outdoor Unit)
290
E: A8. Refrigerant Leakage Sensor Error (Indoor Unit)
292
Troubleshooting Without Error Code
293
Indoor Unit-No Power
293
Outdoor Unit-No Power
294
No Operation (Power Is On)
295
No Cooling/No Heating
297
Abnormal Noise
299
Water Leaking
300
Troubleshooting with Error Code (for Wireless LAN Adapter)
301
E: 18. External Communication Error between Indoor Unit and Wireless LAN Adapter
301
Network Communication Error between Wireless LAN Router and Wireless LAN Adapter
302
E: 18. Communication Error
304
E: 18. Wireless LAN Adapter Non-Energized
306
Mobile App Setting Method
307
Service Parts Information
309
Compressor
309
Inverter Compressor
310
Outdoor Unit Electronic Expansion Valve (EEV)
312
Indoor Unit Fan Motor
314
Outdoor Unit Fan Motor
319
Thermistor Resistance Values
320
Indoor Unit
320
Outdoor Unit
321
Rotation Number Control of Compressor
331
Cooling Operation
331
Heating Operation
340
Dry Operation
341
Rotation Number of Compressor at Normal Start-Up
348
Rotation Number of Compressor Limitation by Outdoor Temperature
349
Auto Changeover Operation
350
Fan Control
352
Indoor Fan Control
352
Outdoor Fan Control
382
Louver Control
384
Horizontal Louver Control
384
Vertical Louver Control
386
Adjust the Horizontal Louver
386
Individual Louver Control
387
All Louver Control
387
Swing Operation
388
Timer Operation Control
389
Wireless Remote Control
389
Wired Remote Control
393
Defrost Operation Control
396
Defrost Operation in Heating Operation Stopped
397
Various Control
398
Auto Restart
398
MANUAL AUTO Operation
398
Forced Cooling Operation
399
C HEAT Operation
399
ECONOMY Operation
400
POWERFUL Operation
400
Fresh Air Control (for Other than 07-14KMTB and KMCC Series Wall Mounted Type)
400
Compressor Preheating
401
External Electrical Heater Control (for Compact Cassette, Mini Duct, Slim Duct, KGTE, KGTF, KMTE, KMCE, KMCF, KETE[-B], and KETF[-B] Series Wall Mounted and Ceiling Types)
401
Electronic Expansion Valve Control
401
Drain Pump Control
402
Prevention to Restart for 3 Minutes (3 Minutes St)
405
4-Way Valve Control
405
Human Sensor for Energy Saving (for KGTB, KGTE, and KGTF Series Wall Mounted and Ceiling Types)
406
Various Protections
407
Discharge Gas Temperature Over-Rise Prevention Control
407
Anti-Freezing Control (Cooling and Dry Mode)
407
Current Release Control
408
Indoor Unit Fan Motor over Temperature Protection
409
Compressor Temperature Protection
410
High Pressure Protection
410
Low Outdoor Temperature Protection
410
High Temperature and High Pressure Release Control
411
Function Settings (for Indoor Unit)
415
Compact Cassette, Mini Duct, Slim Duct Types Indoor Unit (Setting by DIP Switch)
415
Indoor Unit (Setting by Wireless Remote Controller)
417
Indoor Unit (Setting by Wired Remote Controller)
434
Indoor Unit (Setting by Simple Remote Controller)
445
Function Details
452
Wired Remote Controller (UTY-RNNYM)
462
Wired Remote Controller (UTY-RVNYM)
464
Wired Remote Controller (UTY-RLRY)
465
Wired Remote Controller (UTY-RNRYZ*)
465
Simple Remote Controller (UTY-RSNYM)
466
Function Settings (for Outdoor Unit)
467
Setting Methods
467
Outdoor Unit Low Noise Operation Function (Option)
470
Current Limit Function
470
Check and Test
471
Check Run
471
Test Run
477
Error Code
478
Pump down
481
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Fujitsu ASY50-KM Specifications
General
Brand
Fujitsu
Model
ASY50-KM
Category
Air Conditioner
Language
English
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