Toyotomi CCT140A-M, Руководство по обслуживанию

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Troubleshooting
Electrical Control
2.
Troubleshooting
2.1 Display board
2.1.1 Icon explanation on indoor display board (Big cassette).
2.1.2 Icon explanation on indoor display board (Compact cassett).
2.2. Self-diagnosis
Indoor unit
’
s LED indication
(1) For the Big Four-way cassette
During malfunction or protection, the indicators and digital LED displays as follow:
No Operation Timer Def/Fan Alarm Digital LED Display Malfunction or protection
1
X
☆
X X
E2 Indoor temperature sensor is abnormal
2
☆
X X X
E3 Evaporator temperature sensor is abnormal
3
X X
☆
X
E4 Condenser temperature sensor is abnormal
4
☆ ☆
X X
E7 EEPROM malfunction
5
X X X
☆
E8 Full-water malfunction
Note:
“
X
”
means off,
“
☆
”
means flashes at 5Hz
(2) For compact cassette indoor unit
No Operation Timer Def/Fan Alarm Information Remark
1
★
X X X
Normal standby
Nothing wrong with the unit
when LED indicate these
contents.
2
X X X X
Normal off
3
○
X X X
Normal running
4
☆
X
○
X
Forced cooling