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'14 • KX-SM-221
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(C) Data output
(1) 7-segment display and operation data retention
(a) 7-segment display
Operation information is displayed for checking various operation data during test run and for helping malfunction diag-
nosis at servicing. Input data to microcomputer, contents of outdoor unit control, registration information of indoor units
and etc. are mainly displayed on the 7-segment LED.
(i) Operation information display
1) Each item is displayed at the 7-segment LED with 3-digit on outdoor control PCB.
2) The code No. of each item is selected by pressing SW9 for the order of 10 and SW8 for the order of 1.
3) Code No. at factory setting is “C00”.
4) The code No. “C96” is for resetting.
The contents of retained operation data (the data for a period of 30 minutes prior to error stop) can be erased by
setting the code No. at “C96”.
The resetting method is to select the code “C96”
first.
(If any error data is retained, “dEL” is displayed on the
data display area.)
And then when press SW7 for 3 seconds, the retained error data can be erased. However the data of the code No.
“C44” (compressor cumulative operation time) are not erased.
When the data is erased, “---” is displayed on the data display area of 7-segment LED. And this is displayed as
well when no error data is retained.
5) If SW8 (order of 1) is pressed, it displays in the order of 0
⇒
1
⇒
2 …… 9
⇒
0.
6) If SW9 (order of 10) is pressed, it jumps to the leading code of each order of 10.
(Example) If SW9 is pressed at the code No. “C07” displayed, it jumps to the code No. “C10”. If SW9 is pressed
7) The data of code No. “C44” can be erased independently.
The compressor cumulative operation time corresponding to the code No. selected can be erased (reset). (For
resetting of the compressor cumulative operation time after replacement of compressor.)
The resetting method is to select the code “C44”
firs
t. (The compressor cumulative operation time corresponding
to the code No. is displayed on the data display area of 7-segment LED.)
And then when press SW7 for 3 seconds, the retained data can be erased. However the data of the retained operation
data (the data for 30 minutes before error stop) are not erased.
'14 • KX-SM-221
< The way to reset >
at the code No. “C90” displayed, it jumps to the code No. “P00”.
< The way to reset >
It will skip items of spare in display unit.
8)
(ii) Error code displayed at error occurrence can be reset with the dip switch SW3-1 ON.
(iii) Discharge pressure saturated temperature and suction pressure saturated temperature are displayed after rounding to
unit, if it is -10.0°C or lower. (Because the 7-segment display range is 3-digit.)
(iv) Priority of display
1) [EXX] > [CHJ] > [CHU] > [PdS] > [PdE] > [oPE-X] > [CXX], [PXX]
[EXX]: Error code
[CHJ], [CHU]: Check mode
[PdE], [PdS]: Pump down operation
[oPE]: Outdoor unit setting
2) If the state of 1) is reset, it is automatically switched to [CXX]. (Automatic data display mode)
3) When pressing SW8 or SW9 under the state of 1), it switched to [CXX].
However the button input is not done for 10 seconds after switching to [CXX], the display is changed to the spe-
cial display according to the priority of the state 1).
