Mitsubishi Heavy Industries SRK20ZIX-S Service Manual page 74

*3: To count the number of flashes in the service mode, count the number of flashes after the light lights up for 1.5 second
initially (start signal). (The time that the light lights up for 1.5 second (start signal) is not counted in the number of
flashes.)
ON
RUN light
(10's digit)
OFF
ON
TIMER light
(1's digit)
OFF
*4: When in the service mode, when the remote controller settings (operation switching, fan speed switching, temperature
setting) are set as shown in the following table and sent to the air conditioner unit, the unit switches to display of service
data.
1) Self-diagnosis data
What are Self- ........These are control data (reasons for stops, temperature at each sensor, remote controller information)
diagnosis Data? from the time when there were error displays (abnormal stops) in the indoor unit in the past.
Data from up to 5 previous occasions are stored in memory. Data older than the 5th previous occasion are erased.
The temperature setting indicates how many occasions previous to the present setting the error display
data are and the operation switching and fan speed switching data show the type of data.
Remote controller setting
Fan speed switching
Operation switching
MED
Cooling HI
AUTO
LO
MED
Heating
HI
AUTO
Remote controller setting
Temperature setting
21ºC
22ºC
23ºC
24ºC
25ºC
Only for indoor heat exchanger sensor 2
Remote controller setting
Temperature setting
26ºC
27ºC
28ºC
29ºC
30ºC
1.5 sec.
0.5 sec. 0.5 sec.
Displays the reason for stopping display in the past (error code).
Displays the room temperature sensor temperature at the time the error code was displayed in the past.
Displays the indoor heat exchanger sensor temperature at the time the error code was displayed in the past.
Displays the remote controller information at the time the error code was displayed in the past.
Displays the outdoor air temperature sensor temperature at the time the error code was displayed in the past.
Displays the outdoor heat exchanger sensor temperature at the time the error code was displayed in the past.
Displays the discharge pipe sensor temperature at the time the error code was displayed in the past.
Indicates the number of
occasions previous to the present
the error display data are from.
1 time previous (previous time)
2 times previous
3 times previous
4 times previous
5 times previous
Indicates the number of
occasions previous to the present
the error display data are from.
1 time previous (previous time)
2 times previous
3 times previous
4 times previous
5 times previous
73
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11-second interval
Contents of output data
-