- 233 -
Troubleshooting
8-2-65. The reverse phase of 3 phases power
Outdoor unit display
Indoor unit display
Judgment method
Causes
(Operation)
(Timer)
(Fan)
(Filter)
(Removing frost)
- In case of being reversed the order of phases or not entered one or every phase voltage
-
compared to the 3 phases detection circuit wave (If the phase voltage is return to normal,
-
error is auto released)
- 3 phases L1(R), L2(S), L3(T) connection error/Not input 3 phases voltage
No
No
Yes
Yes
Check the main voltage.
Is the voltage between
red~white/white~black/red~black
of CN82 power cable about
AC 380V?
After switching power breaker off exchange
the 2 lines among the three lines of 3 phases
inlet. And check again it.
Is E425 error occurred again?
Replace the PCB because it is a defect of
3 phases detection circuit.
Manage to the troubles with measuring
from 3 phases power inlet.
Normal operation
1. Check point
1.
- Check the 3 phases detection power on the outdoor unit PCB.
1.
- The color of power cable on L1(R), L2(S), L3(T) of 3 phases detection connecter is red, white, black.
(Be sure to change the color and order.)
K1
K2
K3
K4
CN82
Power cable for check
3 phases power
DB98-17816A(1)_8 3/2/04 9:35 AM Page 233
Summary of Contents for DVM Series
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Page 298: ... 297 Exploded Views and Parts List 31 1 31 6 31 5 31 4 31 2 61 1 61 2 62 1 65 2 31 3 ...
Page 358: ... 357 Memo ...
Page 361: ... 360 Wiring Diagram 10 10 1 2 4 way cassette type Cooling only AVMCC ...
Page 362: ... 361 Heat pump AVMCH ...
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