Power Supply Insufficient - Daikin VRV Inverter K Series Manual

SI-05C.BOOK Page 328 Monday, November 6, 2000 4:13 PM
How to Use The Monitor Switch On The Inverter PC Board
5.7

Power Supply Insufficient

U U U U 2 2 2 2
Remote Controller
Display
Supposed Causes
Troubleshooting
328
Power supply insufficient
Instantaneous failure
Open phase
Defect of inverter unit
Defect of outdoor PC board
Defect of K1M.
Main circuit wiring defect
Turn on again.
NO
Turn K1M ON.
of power reaching the K1M
YES
The
voltage between
the P and N terminals is
320 VDC (Y1, YAL) or more
and N gradually rise to 339
when the compressor
is running.
"U2" blinks again.
Monitor field power supply.
Replace the inverter unit.
Is 220~240 V
YES
coil?
NO
Does
the voltage
between terminals P
YES
VDC (Y1, YAL) after
turning on?
NO
Is 220~240 V at NO
the connector of X1A.
Is 220~240 V of
power reaching X5A of outdoor
PCboard side?
YES
Check the
transmission wiring
between the outdoor unit PC
board and inverter
unit.
: http://splitoff.ru/tehn-doc.html
Troubleshooting PLUS Series
SiE-05C
Replace K1M.
Replace the inverter unit.
NO
Replace the outdoor unit
PC board.
(VF164)