8
Troubleshooting
8-2-64. The error of digital compressor discharge temperature sensor (open / short)
Outdoor unit display
Indoor unit display
Judgment method
Causes
Is separated the
digital compressor discharge
temperature sensor connecter of
outdoor unit from PCB?
Detach the digital compressor discharge
temperature sensor connecter of outdoor unit
from PCB, and measure the resistance value
between the both terminals.
Yes
Is the resistance
value far from the temperature
Restart after PCB exchange.
(Operation)
(Timer)
- When opening or shorting of digital compressor temperature sensor
- Open or short of the corresponding sensor
No
table?
No
(Fan)
(Filter)
(Removing frost)
Yes
Restart after connecting a connecter to PCB.
Yes
Replace the digital compressor
discharge temperature sensor
because it is defect.
Temperature
Resistance
(˚C)
(kΩ)
130
8.9
120
11.2
100
18.5
80
32
60
59
25
200
20
242
10
362
0
553
-10
MUF-0601
- 246 -
Temperature
Resistance
(˚C)
(kΩ)
130
2.6
120
3.4
100
5.8
80
10.8
60
21
25
86
20
107
10
171
0
280
-10
475
Another model
(model used PWM compressor)