Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 926

FDC-HKX
Error display : e39
11
Indoor unit
Red LED Stays OFF
Green LED Keeps flashing
Note (1) Single flashing of outdoor unit LED indicates Th
indicates Th -2.
0
Is the
discharge gas thermistor
connector connection
OK?
NO
Repair
Error display : e40
12
Indoor unit
Red LED Stays OFF
Green LED Keeps flashing
Did 63H
Defective outdoor unit PCB
Replacement (Defective 63H
input circuit)
Note (1) When the wire of 63H
If the operation is started in this period of time, the operation changes to the thermostat OFF state during cooling, and cool
wind blow stops during heating operation.
924
[Defective discharge gas thermistor]
Outdoor unit
Red LED
Green LED
-1 and double flashing
0
Are the discharge
YES
gas thermistor characteristics
OK, is there no
broken wire?
NO
Defective discharge gas
thermistor Replacement
[63H, motion]
Outdoor unit
Red LED
Green LED
At 63H
1. During cooling
YES
• Is the outdoor unit fan motor operating?
,operate?
1
• Is there no short circuit air circulation for thr outdoor
• Is there sufficient space for air inlet & outlet?
2. During heating
NO
• Is the gas side service valce fully opened?
• Is the indoor unit heat exchanger sensor detached
• Is the filter clogged?
,
1
• Is the outdoor unit fan controlled by due to defective
3. During colling/heating
• Is the refrigerant charge excessive?
is broken from the moment of power on, the error E40 is displayed 40 minutes later.
1
(1)
1 time flash
Keeps flashing
Defective outdoor unit PCB
YES
Replacement (Defective dis-
charge gas thermistor input
circuit)
Temperature-resistance
characteristics of discharge
gas thermistor (Th
100
50
0
0 20
1 time flash
Keeps flashing
operation
1
unit?
from the detector case?
63H ?
2
D)
O-
10
T < 80°C
T > 80°C
5
0
50 80 100 120
Temperature [T] (°C)