Mitsubishi Electric PCH-2GKHA Service Manual page 53

3-1 Outdoor coil temperature
To obtain data on the outdoor coil temperature, add the number of bits of lighting LEDs, and see the graph below to find
the temperature.
3-2 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.
1PUH-2/4K type
Type
<50Hz>
800
600
400
200
0
50
Fan output step (bit)
3-3 Total time of compressor operation
Compressor operation time is indicated in 256 hour units. To obtain the compressor operation time, add the hours of
lighting LEDs. During the compressor operation time indication, SW2 is not available.
3-4 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 duirng normal operation. operation will continue.
The latest check code is indicated.
C
100
80
60
40
20
0
-20
(Open 8 bits) (Open 8 bits)
-40
0 50 100
100 150 200 250
(Short 238 bits) (Short 238 bits)
150 200 255
Number of bits
2PUH-2.5/3/5/6K type
<50Hz> Type
800
600
400
200
0
50
Fan output step (bit)
100 150 200 250
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