Troubleshooting - Haier HDU-60CA03T3 Service Manual

9.2 Sensor characteristic
Model
Outdoor unit
HDU-42HT03/H
Indoor unit
HDU-42CA03T3/H
Outdoor unit
HDU-50CA03T3/H
HDU-60CA03T3/H
Indoor unit

10. Troubleshooting

As for the failure code, please refer to the page 26 and page 30
1) Sensor failure
check if the wiring is
correct according to
wiring diagram
no
if sensor is fixed
well
yes
Is sensor short-circuit
or open-circuit?
yes
Is sensor resistance
acceptable?
yes
Is DC voltage between
both ends of sensor
near 5V or 0V?
no
Replace PCB
Commercial Air Conditioner
Code
0010450398 temp. sensor
0010451314 coil temp. sensor
001A3900110 ambient temp. sensor R25=5KΩ±1%，B25/50=3450K±1%
001A3800128 coil temp. sensor
0010450398 temp. sensor
001A3900110 ambient temp. sensor R25=5KΩ±1%，B25/50=3450K±1%
0010401922 coil temp. sensor
no
reconnect
Relocate
yes
Replace sensor
no
Replace sensor
39
Name characteristic
R80=50KΩ±3%，B25/80=4450K±3%
R25=5KΩ±1%，B25/50=3450K±1%
R25=10KΩ±3%，B25/50=3700K±3%
R80=50KΩ±3%，B25/80=4450K±3%
R25=10KΩ±3%，B25/50=3700K±3%