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Service Procedures
SM830063
3
1. Troubleshooting
Location of Sensor (Themistor)
NOTE
PC or PC Comp. or Compressor : Power Control Compressor
AC Comp. or AC Compressor : Standard Compressor
(
NORMAL DISPLAY
Display Change
SERVICE CHECK DISPLAY
Set temp. È Code No.
UNIT No. È UNIT No. (
Indoor unit address
)
Hours, Minutes È Alarm Message
(
È
)
Refer to the table below for the relationship between the sensor address and the location of the sensor.
In case there are no sensor equipped with the unit, - - - is shown on the display.
C Resetting the remote controller display to previous mode.
❏ To reset the display when you are finished, press TEST / CHK button, then the remote controller will return to
previous mode.
(D) Find out about past service problems
The remote controller can memorize the max. 4 most recent alarm messages, so you can see problems the unit has
had, if any. Knowing what has already occurred and been fixed helps you know what to check at present.
❏ This function is usable even if the unit is not working.
❏ To display the past error codes, follow the procedure below.
Procedure:
a On the remote controller, press both TEST / CHK and SET buttons at the same time for more than 4 seconds.
b Once in this mode, display changes from the normal display to service check display as shown in the table below:
Relationship between the sensor address and the location of sensor
Sensor Address
(CODE No.)
Indoor Unit 01 —
02 TH1 Indoor air suction Temp.
03 TH2 Indoor coil Temp. (E1)
04 TH3 Indoor coil Temp. (E2)
05 TH4 Indoor coil Temp. (E3)
Outdoor Unit 06 —
07 —
08
Indoor Electronic Control Valve Open (pulse)
09 —
0A TH01 Discharge gas Temp. A (PC Compressor)
0B TH02 Discharge gas Temp. B (AC Compressor)
0C —
0D TH03 Outdoor coil liquid Temp.
0E TH04 Outdoor coil gas Temp.
0F —
10 —
11 TH05 Outdoor air suction Temp.
12 —
13 PC Compressor Current
14 AC Compressor Current
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