III - 26
Service Procedures
SM830052
3
1. Troubleshooting
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
TH0A Discharge gas Temp. A (PC Compressor)
0B
TH0B Discharge gas Temp. B (AC Compressor)
0C
TH0C Outdoor coil Temp. (C2)
0D
TH0D Outdoor coil liquid Temp. (C1)
0E
—
0F
—
10
—
11
—
12
—
13
PC Compressor Current
14
AC Compressor Current
Location of Sensor (Themistor)
NOTE
PC or PC Comp. or Compressor
:
Power Control Compressor
AC Comp. or AC Compressor
:
Standard Compressor
(
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:
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
)