Daikin VRVIII-S, Service Manual

Page: 181 / 266

Troubleshooting by Indication on the remote control SiENBE34-703
170 Troubleshooting
Troubleshooting
∗
: Refer to information on P.195.
(V3187)
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Caution
Repair the broken wires, and
then restart operation.
Replace the fuse.
Fix the indoor/outdoor unit
transmission wiring.
Push and hold the RESET
button on the outdoor unit PC
board for 5 seconds.
Replace the outdoor unit PC
board (A1P).
Replace the indoor unit PC
board.
Push and hold the RESET
button on the master outdoor
unit PC Board for 5 seconds.
Fix the indoor/outdoor unit
transmission wiring.
Has the
indoor or
outdoor unit PC
board been replaced, or
has the indoor - outdoor or
outdoor - outdoor unit
transmission wiring
been modified?
All
indoor
unit remote
controls of the same
refrigerant system
display"U4."
Outdoor unit PC
boardmicrocomputer
monitor(HAP) blinks.
Operation ready
lamp (H2P) is
blinking.
Lamp does not go
off for 12 minutes or
more.
The fuse F3U on the
outdoor unit's PC board
is burnt.
Check No. 3
∗
Check for the fan motor
connector.
Replace outdoor unit PC
board (A1P).
Has either
the fuse F4U on the
outdoor unit PC board (A1P)
or the fuse F1U on the inverter PC
board (A2P) blown out?
Are
there any broken
wires in the connectors of the
inverter PC board (A1P) and the control PC
board (A2P)?
Reset the power supply.
Supply 220~240 V.
Replace the fuse F4U and
the inverter PC board (A2P).
Replace the fan motor.
Replace the inverter PC
board.
Replace the fuse F4U.
∗
The unit will not operate
forup to 12 minutes.
YES
YES
NO
NO
NO
NO
NO
NO
YES
YES
YES
Is indoor -
outdoor and outdoor
- outdoor unit transmission
wiring normal?
The voltage between
terminals L3 and N of the
outdoor unit PC board is
220~240 V.
YES
YES
NO
YES
Is resistance
between pins in
excess of judgment
criteria?
Is
indoor -
outdoor and outdoor -
outdoor unit transmission
wiring normal?
YES
NO
NO
YES
YES
NO
NO
YES
Check No.3