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Troubleshooting for Indoor Unit
Si21-205
146
Troubleshooting
5.4
Indoor Unit Fan Motor Lock
Remote
Controller
Display
A6
Applicable
Models
FHQ-BU
Method of
Malfunction
Detection
Detection by failure of signal for detecting number of turns to come from the fan motor
Malfunction
Decision
Conditions
When number of turns can’t be detected even when output voltage to the fan is maximum
Supposed
Causes
Failure of indoor unit fan motor
Broken or disconnected wire
Failure of contact
Failure of indoor unit PC board
Troubleshooting
With
X26A unplugged
and the power supply
turned on, is there about 12
VDC between pins 1
and 3 of
X26A?
YES
YES
Connect correctly.
Indoor unit PC board
replacement
Check indoor unit fan
motor and motor wiring.
Are
X20A and
X26A properly
connected?
NO
(S2008)
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 ...