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10-2-4. Distinction of error mode by LED indication of outdoor unit
On the Type AP112, AP140 and AP160, a Dip switch (SW801) and LED are provided on the P.C. board of the
outdoor unit.
Exchanging this Dip switch enables users to know the status of the outdoor unit in that time.
Lighting status of LED enables users to know the distinction stage before trouble of the outdoor unit will be
determined and displayed on the remote controller.
Depending on the indoor unit to be combined, the error of the outdoor temperature sensor (TO) may be
confirmed on LED indication only.
Model
SM160
(MCC-1531)
Dip switch
SW801
Bit 1 Bit 2
OFF OFF
ON OFF
OFF ON
ON ON
LED
D800 D801 D802 D803
(Red) (Yellow) (Yellow) (Yellow)
For error display,
refer to on the next page.
During timer short
²lll
During pump down operation
l²²²
Protective operation count
Normal time, Count 1
ll
——
Count2, Count 3
l
¡
Under backup control
Count 4, Count 5
¡
l
¥
Count 6, Count 7
¡¡
Protective operation
²²
PMV opening data (Lower 4 bits data)
When this LED lights, When this LED lights, When this LED lights, When this LED lights,
add +16 pulses. add +8 pulses. add +4 pulses. add +2 pulses.
PMV opening data (Upper 4 bits data)
When this LED lights, When this LED lights, When this LED lights, When this LED lights,
add +256 pulses. add +128 pulses. add +64 pulses. add +32 pulses.
Total pulses of LED which lights at the respective positions become PMV opening.
For example, in case of
¡
ll
¡
ll
¡¡
(Upper 4 bits, Lower 4 bits),
PMV opening becomes 256 + 32 + 4 + 2 = 294 pulses.
¡
: Go on,
l
: Go off,
²
: 1Hz flash,
¥
: 5Hz flash