MUND CLIMA MUCR-HF, Service Manual

Page: 66 / 84

1.2 Indoor unit malfunction
NO. Malfunction
Defrosting
lamp
Alarm
lamp
Running lamp
Timer
lamp
Display(digital
tube)
1
Communication malfunction between indoor
and outdoor units.
X X X
☆
E1
2
Open or short circuit of T1 temperature
sensor
X X
☆
X E2
3
Open or short circuit of T2 temperature
sensor
X X
☆
X E3
4
Open or short circuit of T2B temperature
sensor
X X
☆
X E4
5 Full-water malfunction X
☆
X X EE
6 Indoor EEPROM malfunction
☆
X X X E7
7 Outdoor unit malfunction X
◎
X X Ed
8 Indoor fan speed is out of control
☆ ☆
X X E8
9
Communication malfunction between main
PCB and up-down panel PCB
Control remoto cableado mal conectado.
☆ ☆ ☆
X F0
10 Up-down panel malfunction
☆ ☆
X
☆
F1
11 Up-down panel is not closed
☆ ☆
X O F2
12
Communication malfunction between master
unit and slave unit
X
☆
X
☆
F3
13 Other malfunction of master unit or slave unit X
☆ ☆
X F4
O (on) X(off)
☆
(flash at 5Hz)
◎
(flash at 0.5Hz)
Check the connections
between temperature
sensor and PCB. Are
the connections good?
Correct the connections. No
Yes
Yes Replace indoor or outdoor PCB.
Replace the sensor
Check the resistance value
of the sensor via Appendix 1
Is it normal?
No
1.2.1 Open or short circuit of temperature sensor
Service manual Inverter HF
66