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Si21-205
Troubleshooting Based on Equipment Condition
Troubleshooting
123
1.3
Cooling / Heating operation starts but stops immediately.
Applicable Model
All models of SkyAir series
Error Detection
Method
Error Generating
Condition
Possible Cause
Excess charge of refrigerant
Air intrudes into refrigerant system
Faulty magnetic switch for outdoor unit fan motor
Faulty aux. relay for outdoor unit fan motor
Soiled heat exchanger of outdoor unit
There is an interfering item in air flow of outdoor unit
Malfunction of outdoor unit fan
Soiled air filter of indoor unit
Soiled heat exchanger of indoor unit
There is some interfering item in airflow of indoor unit
Malfunction of indoor unit fan
Troubleshooting
Diagnose based on the
error code on remote
controller
Malfunction of fan motor
Check the magnetic switch
and aux. switch for fan
motor
Cleaning
Remove the disturbing
item
Cleaning of the heat
exchanger
After vacuum drying,
charge correct amount of
refrigerant
Possible causes as follows:
∗
Refrigerant overcharge
∗
Mixing of air in refrigerant
system
Does the fan rotate?
Is the filter soiled?
NO
NO
Is
the operation
lamp of remote controller
flashing?
Is the
operation lamp
of indoor unit photo-sensing
section flashing?
Is the type of
remote controller wired or
wireless?
Is there any item
disturbing airflow?
Is the heat
exchanger soiled?
YES
NO
YES
YES
YES
YES
Wireless
YES
Heating: Indoor unit
Cooling: Outdoor unit
wired
[
]
(S2729)
NO
NO
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Summary of Contents for Sky Air B-Series R-410A
Page 7: ...Si21 205 vi Table of Contents ...
Page 15: ...Models Si21 205 4 Model Name and Power Supply ...
Page 16: ...Si21 205 Functions 5 Part 2 Functions 1 List of Functions 6 ...
Page 35: ...Wireless Remote Controller Si21 205 24 Remote Controller ...
Page 79: ...Settings Concerning Maintenance Si21 205 68 Field Setting Detail of PCB 2 ...
Page 83: ...Maintenance Mode Setting Si21 205 72 Field Setting ...
Page 239: ...Troubleshooting for Outdoor Unit 50 60 class Si21 205 228 Troubleshooting ...
Page 321: ...Outdoor Unit 50 60 class Si21 205 310 Removal Procedure ...