SERVICE MANUAL - Mitsubishi Heavy Industries Ltd.
SERVICE MANUAL - Mitsubishi Heavy Industries Ltd.
SERVICE MANUAL - Mitsubishi Heavy Industries Ltd.
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
8<br />
9<br />
Error display : e38<br />
Is the outdoor<br />
air temperature thermistor<br />
connector connection<br />
OK?<br />
NO<br />
Repair<br />
YES<br />
Is the outdoor<br />
air temperature thermistor<br />
characteristics OK, is there<br />
no broken wire?<br />
YES<br />
NO<br />
Defective outdoor air<br />
temperature thermistor<br />
Replacement<br />
● Display conditions<br />
If the temperature sensed by the thermistor is –30ºC or lower continuously<br />
for 5 seconds between 2 minutes and 2 minutes 20 seconds after<br />
the compressor goes ON, the compressor stops. After a 3 minute delay,<br />
the compressor restarts. If this state is detected 3 times in 40 (60) minutes.<br />
Note (1) Values in ( ) show for the case of the 301~601 models.<br />
Error display : e39<br />
[Defective discharge pipe thermistor]<br />
Indoor unit<br />
Outdoor unit<br />
Red LED<br />
Stays OFF Red LED 1 time flash<br />
Green LED Keeps flashing Green LED Keeps flashing<br />
Note (1) The green LED in the outdoor unit is used in the FDCA301 ~ 601 models only.<br />
Is the discharge<br />
pipe thermistor<br />
connector connection<br />
OK?<br />
NO<br />
Repair<br />
[Defective outdoor air temperature thermistor]<br />
Indoor unit<br />
Outdoor unit<br />
Red LED<br />
Stays OFF Red LED<br />
1 time flash<br />
Green LED Keeps flashing Green LED Keeps flashing<br />
Note (1) The green LED in the outdoor unit is used in the FDCA301 ~ 601 models only.<br />
YES<br />
Are the discharge<br />
pipe thermistor characteristics<br />
OK, is there no<br />
broken wire?<br />
Defective discharge pipe<br />
thermistor Replacement<br />
● Display conditions<br />
If the temperature sensed by the thermistor is –10ºC or lower continuously<br />
for 5 seconds between 10 minutes and 10 minutes 20<br />
seconds (2minutes and 2minutes 20seconds) after the compressor<br />
goes ON, the compressor stops. After a 3 minute delay, the compressor<br />
restarts. If this state is detected 3 times in 40 (60) minutes.<br />
Note (1) Values in ( ) show for the case of the 301~601 models.<br />
NO<br />
- 29 -<br />
YES<br />
Thermistor resistance (kΩ)[T 0°C<br />
0<br />
---50 0 50<br />
Temperature [T](°C)<br />
Defective outdoor unit control<br />
PCB Replacement (Defective<br />
discharge pipe thermistor<br />
input circuit)<br />
50<br />
Temperature-resistance<br />
characteristics of discharge<br />
pipe thermistor (ThO-D)<br />
T< 80°C<br />
T> 80°C<br />
0<br />
0 20 50 80 100 120<br />
Temperature [T] (°C)<br />
40<br />
30<br />
20<br />
10<br />
0<br />
10<br />
5<br />
0<br />
Thermistor resistance (kΩ)[T>0°C]<br />
Thermistor resistance (kΩ)[T > 80°C]
Change language