Toyotomi CCT 50HINVi Service Manual page 42

2.1.5 Icon explanation on indoor display board (Compact cassette).
2.2 Indoor unit malfunction
NO. Malfunction
Communication malfunction between indoor
1
and outdoor units.
Open or short circuit of T1 temperature
2
sensor
Open or short circuit of T2 temperature
3
sensor
Open or short circuit of T2B temperature
4
sensor
5 Full-water malfunction
6 Indoor EEPROM malfunction
7 Outdoor unit malfunction
8 Indoor fan speed is out of control
Communication malfunction between main
9
PCB and up-down panel PCB
10 Up-down panel malfunction
11 Up-down panel is not closed
Communication malfunction between master
12
unit and slave unit
13 Other malfunction of master unit or slave unit
Electrical Control System
Defrosting
lamp
X
X
X
X
X
X
X
X
O (on) X(off) (flash at 5Hz)
Alarm
Running lamp
lamp
X X
X
X
X
X
X X
X
X
X
X
X
(flash at 0.5Hz)
Troubleshooting
Timer Display(digital
lamp tube)
E1
X E2
X E3
X E4
X EE
X E7
X Ed
X E8
X F0
F1
O F2
F3
X F4
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