Service Manual

8. Troubleshooting
258
SMGB0079 rev.0 - 01/2013
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Contents of the check mode 2
When more than three indoor units are connected to one remote control switch, the latest data of only the rst three indoor
units that are connected serially are displayed.
If you press the part “” of the TEMP switch, the next display appears. If you press the part “” of the TEMP switch, the
previous display appears.
Temperature indication
Indication of the category code
Indication of the temperature, etc
1
Indoor unit air inlet temperature at
thermistor (°C)
91 23
Corresponds to check mode 1 “b2”
2
Indoor unit discharge air tempera-
ture at thermistor (°C)
92 50
Corresponds to check mode 1 “b3”
3
Indoor unit heat exchanger liquid
pipe temperature
(freeze protection) (°C)
93 25
Corresponds to check mode 1 “b4”
4 Outdoor temperature (°C)
94 12
Corresponds to check mode 1 “b6”
5
Indoor unit heat exchanger gas
pipe temperature (°C)
95 25
Corresponds to check mode 1 “b7”
6
Evaporating temperature at
heating (°C)
96 03
Corresponds to check mode 1 “b8”
7 Control information
97 --
Corresponds to check mode 1 “b9”
8
Discharge gas temperature at the
top of compressor chamber (°C)
98 45
Corresponds to check mode 1 “bA”
Compressor pressure/frequency indication
9
Discharge pressure (high)
(x 0.1 MPa)
9g 18
Corresponds to check mode 1 “H1”
10
Suction pressure (low)
(x 0.01 MPa)
9A 04
Corresponds to check mode 1 “H2”
11 Control information
96 44
Corresponds to check mode 1 “H3”
12 Operating frequency (Hz)
9C 44
Corresponds to check mode 1 “H4”
Expansion opening indication
13
Indoor unit expansion valve
opening (%)
9d 20
Corresponds to check mode 1 “L1”
14
Outdoor unit expansion valve mv1
opening (%)
9E gg
Corresponds to check mode 1 “L2”
Estimated electric current indication
15 Compressor running current (A)
9F 20
Corresponds to check mode 1 “P1”
Returns to temperature indication