Service manual

22
1-1 Outdoor coil temperature
To obtain data on the outdoor coil temperature,
add the number of bits of lighting LEDs, and
see the graph to find the temperature.
1-2 Fan output step
To obtain data on the fan output step, add the number of bits of lighting LEDs, and see the graph below to find the fan
rotational frequency.
1-3 Total time of compressor operation
Compressor operation time is indicated in 256 hour units. To obtain the compressor operation time, add the hours of light-
ing LEDs. During the compressor operation time indication, SW2 is not available.
1-4 Check code indication
● When a protection function works for the first time during operation, the operation stops and restarts after the 3-minutes
time delay mode. When the protection function works again, the operation stops. (Check mode) When both SW3-1 and
SW3-2 are OFF, the check code is indicated.
● If the outdoor controller board receives the compressor ON command from the indoor controller board during check
mode the indication changes to output state indication.
● By pressing SW2 during normal operation. operation will continue.
● The latest check code is indicated.
50
Fan output step (bit)
Fan rotational frequency (rpm)
100 150 200 250
800
600
400
200
0
50
Fan output step (bit)
Fan rotational frequency (rpm)
100 150 200 250
800
600
400
200
0
212
˚F
Temperature
176
140
104
68
32
0
Number of bits
50 100 150 200 255
-4
-40
(Short 38 bits)
(Open 219 bits)
1 PU12EK PU24EK PU30EK
PU24EK1 PU30EK1
PU24EK2 PU30EK2
PU24EK3 PU30EK3
2 PU18EK PU36EK PU42EK2 PU42EK7
PU18EK1 PU36EK1 PU42EK21 PU42EK71
PU36EK2 PU42EK72
PU36EK3
OC247-E--1.qxp 04.8.11 4:25 PM Page 22