No.
SYMPTOM /
PROBLEM
PROBABLE
CAUSE
CORRECTIVE ACTION
8.
One indoor unit or
more are operating in
cool mode with no
capacity, and the
other units have water
leaks/freezing
problems
The
communication
wires of the
indoor units are
switched
Check and correct the communication wires
connection
9.
One indoor or more
are operating in heat
mode with a limited
capacity, and the coil
on the other units are
very hot.
Outdoor unit
10.
Outdoor unit display
board and LEDs are
off
No power
supply
Check supply voltage to main terminals L and
N with volt meter.
Miss-wiring
Check all supply wiring to controller and
terminals according to wiring diagram
Loose
connection
Check all power wiring connections
Burnt fuse
Check fuse on the main board (
Error!
Reference source not found.
)
If still not OK
Replace main board (
14.1.13
)
11.
Compressor does not
start operation
One or some
components are
not operating
well
Check for any fault code shown on display
board and act accordingly.
Electronics
control problem
or protection
PFC Chock coil
Check the PFC Chock coil (
13.5.5
)
Driver failure
Check if fault code # is shown on display
board. If so, fix the problem according to
13.5.4
or replace driver.
If still not OK
Replace compressor.
12.
Cooling capacity is
not sufficient
Unit size not
match the load
Check if the size chosen for the complete
room(s) load is enough or need bigger units
Piping size not
matching
system
Check if piping is installed correctly and proper
diameter size and total length is according to
unit specifications
Refrigerant
leakage
Check refrigeration system (
13.3
)
Refrigerant
over-charge
Refrigerant clog
Check and repair clogging specially near the
EEV
Electronics
control problem
or protection
Check for any fault code shown on display
board and act accordingly.
Compressor
failure
Check if fault code # is shown on display
board. If so, fix the problem according to
13.5.7
or replace driver
Indoor coil block Clean filters and/or remove block or air by-
TROUBLESHOOTING
1
3
-10
SM
HJD
DCI 1-A GB
3
Summary of Contents for AW-HJD009-N11
Page 46: ...9 SM HJD DCI 1 A 2 GB ...
Page 53: ...CONTROL SYSTEM 12 SM HJD DCI 1 A 1 GB SM HJD DCI 1 A 2 GB ...
Page 72: ...3 3 3 3 3 12 4 3 4 12 4 4 12 4 4 1 12 4 4 2 12 4 4 3 CONTROL SYSTEM 12 23 SM HJD DCI 1 A GB ...
Page 92: ...12 11 7 Segme ent Legend d CONTROL SYSTEM 12 44 SM HJD DCI 1 A GB 3 ...
Page 109: ...5 5 HJD00 0 SM HJD DCI 1 A 2 GB 14 14 1 14 1 ...
Page 112: ...5 4 HJD0 SM HJD DCI 1 A 2 GB 4 4 ...
Page 114: ...5 6 HJD0 SM HJD DCI 1 A 2 GB 4 4 ...
Page 117: ...5 8 YBDE00 0 18 SM HJD DCI 1 A 2 GB 4 4 14 9 14 9 012 DCI ...
Page 131: ...SM HJD DCI 1 A 2 GB 5 ...
Page 132: ... SERVICE MANUAL HJD DCI Series ...