12—TROUBLESHOOTING
SM YAZE218 1-A.2 GB | 12—4
12.3.2 Outdoor unit diagnostics and corrective actions
n
o
it
c
A
e
v
it
c
e
r
r
o
C
n
o
it
p
ir
c
s
e
D
t
l
u
a
F
e
m
a
N
t
l
u
a
F
o
N
1 OCT bad
Thermistor not connected or damaged
Check Thermistor (12.4.6)
2 CTT bad
3 HST bad
4 OAT bad
5 OMT bad
6 RGT bad
7 RLT bad
A
N
A
N
d
e
v
r
e
s
e
R
8
A
N
A
N
d
e
v
r
e
s
e
R
9
A
N
A
N
d
e
v
r
e
s
e
R
0
1
11
a) Compressor IPM Fault
b) IPM Driver Pin
c) CompressorCurrent
Sensor Fault
PM module detect shoot-through
current / IPM driver control pin is
unconditionally latch to high state / The
quiescent reference voltage of sensor
resistor is either too high or too low.
Disconnect the compressor plug
and measure between U-V, U-W for
resistance using multimeter. Resistance
value should be below 1 OHM. If
multimeter display high resistance,
replace compressor. Make sure the
phase sequence of U- V-W is correctly
plug into the compressor, othewise
replace controller if error is persistent
12 No Water Flow (For Hydro
Units only)
A
N
A
N
13 Refrigerant Leakage
(future option)
A
N
A
N
14 a) DC under voltage
b) DC over voltage
The capacitor bank DC voltage supply
for the compressor is below operable/
too high value
Check AC input line voltage RMS value,
it should read above 198VAC /below
264VAC. If voltage is above 198VAC/
below 264VAC, and DC over voltage
error is continuously display, replace
controller.
15
a) AC under voltage
b) AC over Voltage
c) Zero Crossing
detection
The AC input supply voltage is below
the limit of 198V / The AC input supply
voltage is above 264V / The AC line
frequency is out of range from 45Hz to
55Hz.
Check AC input line voltage RMS value,
it should read in the range of 198VAC –
264VAC. Check AC input line operating
frequency, it should be in the range from
45Hz to 55Hz. If error is continuously
being display, replace controller.
16
a) Mismatch between
IDU & ODU models
b) Missing ODU
con guration
c) Unde ned ODU Model
d) HW Type and ODU
model mismatch
Miss-match between the IDUs
connected to port A,B,C or D, or the
total capacity code of IDUs is higher
than the ODU maximum capacity code
Change con guration if needed.
17 No Communication
No signals in lineA,B,C,D
Check communication (12.4.7)
18 System Over Power
Compressor stopped due to over
power protection
No action required
19 PFC Current sensor
Controller cannot detect valid AC
line current after compressor start
If error is continuously being display,
replace controller.
Summary of Contents for YAZE218
Page 11: ...4 1 SM YAZE218 1 A 2 GB 4 OUTLINE DIMENSIONS 4 OUTLINE DIMENSIONS 4 1 Indoor Unit HJD009 012 ...
Page 25: ...6 2 SM YAZE218 1 A 2 GB 6 OPERATING CURVES 6 1 2 Heating Technician Mode ...
Page 26: ...SM YAZE218 1 A 2 GB 6 3 6 OPERATING CURVES 6 1 3 Tubing Length correction Factor ...
Page 28: ...SM YAZE218 1 A 2 GB 8 1 8 WIRING DIAGRAMS 8 WIRING DIAGRAMS 8 1 YAZE218 Wiring Diagrams ...
Page 29: ...8 WIRING DIAGRAMS 9 1 SM YAZE218 1 A 2 GB 9 REFRIGERATION DIAGRAMS 9 1 YAZE218 Cooling Mode ...
Page 30: ...8 WIRING DIAGRAMS SM YAZE218 1 A 2 GB 9 2 9 2 YAZE218 Heating Mode ...
Page 77: ...14 1 SM YAZE218 1 A 2 GB 14 APPENDIX A 14 APPENDIX A INSTALLATION AND OPERATION MANUAL ...
Page 78: ...SERVICE MANUAL YAZE218 ...
