Service manual

Si18-201 Troubleshooting - SkyAir Indoor Unit
Service Diagnosis 251
2.5 Troubleshooting by Remote Controller Display / LED
Display
2.5.1 Explanation for Symbols
5
: Blinks
4
: On
3
: Off — : No connection with troubleshooting
%
: High probability of malfunction
$
: Possibility of malfunction
)
: Low probability of malfunction
— : No possibility of malfunction (do not replace)
2.5.2 Malfunction Code and LED Display Table
Indoor Unit
Note: 1. The asterisk (
∗
) indicates variety of circumstances.
2. No H2P for dedicated cooling only model 35 ~ 60 class.
Indoor Unit
Malfunctions
Indoor Unit
LED Display
Note 2
Remote
Controller
Display
Location of Malfunction Contents of Malfunction Details of
Malfunction
(Reference
Page)
H1P H2P Other
than PC
Board
PC Board
Outdoor
Unit
Indoor
Unit
Remote
Controller
55
*Note 1 ——— —Normal
→
to outdoor unit —
54 A1
——$ — Failure of indoor unit PC
board (For
troubleshooting by LED,
refer to p.250.)
252
53
4
—
3
—
55 A3
% —— —Malfunction of drain
water level system
253
55 A6
% — ) — Indoor unit fan motor
overload/ overcurrent/
lock
255
55 A7
% — ) — Swing flap motor
malfunction / lock
256
55 AJ
% — $ — Failure of capacity
setting
257
55 C4
% — ) — Malfunction of heat
exchanger temperature
sensor system
258
55 C9
% — ) — Malfunction of suction air
temperature sensor
system
259