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Indication on the liquid crystal display is changed as follows.
Crystal
I. Checking for Liquid
PR.
H.STRG
LOCAL
OUTLET
1
2
3
4
5
6
7
8
A/C
ABNML
MULTI
UNIT No.
TIMER
INLET
INDVDL
EMG.STOP
TEMP.
NO FUNC.
DEMAND
H.RCV.
CHECK
COOL
SET TEMP.
HEAT
2. Checking Content
I. Checking for Liquid Crystal Display. Checking is performed automatically.
II. Checking for RUN Lamp RUN lamp is flickered twice.
III. Checking for Switch and DSW Input. Press all the switch and turn DSW ON or OFF alternatively,
check that the indicated number is "29" as a normal input number.
IV. Checking for Transmission Circuit. Checking is performed automatically.
V. Checking for External Output. Prepare a cable assembly as shown in the right figure and connect
this cable to CN3. Checking proceeding is as follows.
Turning ON LED1 for 2 seconds → Turning ON LED2 for 2 seconds
Turning OFF LED1 and LED2 for 2 seconds
Turning ON LED1 and LED2
(LED is maintained to light ON until pressing the "CHECK" switch.)
SELF-CHECKING MODE
℃
UNIT No.
MULTI
COOL
TIMER
INDVDL
EMG.STOP
HEAT
NO FUNC.
DEMAND
H.RCV.
1
2
3
4
5
6
7
8
A/C
H.STRG
II Checking for RUN Lamp
iIII Checking for Switch and DSW Input
Normal input number
Is indicated.
IV Checking for Transmission Circuit
MPa
V Checking for External Output
INLET
SET TEMP.
℃
MPa
OUTLET
TEMP. PR.
LOCAL
ABNML
CHECK
VI Checking for External Input
VII EEPROM Check
VIII Checking for IC for
Watch-dog Timer
Self-checking is completed.
(changed to the normal mode
or connection checking mode)
23
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