Error handling instructions for Split outdoor unit
Split ODU – 6 720 817 722 (2015/06)
21
2.9
Error code 32
2.9.1
Error diagnosis and countermeasure flow chart
Inspecting inverter compressor discharge sensor
1. Set multi-tester to resistance measurement mode.
2. Measure the resistance between inverter discharge sensor
connector pins.
3. Measure resistance value of 200k
10%, 25 °C basis.
4. Check if the sensor insulation is damaged, measure the resistance
between sensor connector pin and unit assembly pipe (1M
or
more)
Fig. 19 CN_TH3 connector
[1]
CN_TH3 (red 4pin connector)
Display
code
Title
Cause of error
Check point & Normal
condition
32
High
temperatur
e in
discharge
pipe of the
inverter
compressor
• Overload
operation
(outdoor fan
constraint,
screened,
blocked
• Poor INV
comp
discharge
sensor
• LEV
connector
displaced /
poor LEV
assembly
1. Check outdoor fan
constraint / screened /
flow structure
2. Check refrigerant leakage
3. Check if the sensor is
normal
4. Check the status of EEV
assembly
Table 17 Error code 32
Is the heating water flow
sufficient?
No
->
1. Check that the heating water
circulation pump is working
2. Check that the heating water
flow rate is sufficient
3. Check preassure gauge
(1.5~2.5 bar)
-->Remove cause of error
Yes
Is there enough
refrigerant?
No
->
1. Check refrigerant leakage
2. Supply refrigerant if not
enough
Yes
Is the EEV properly
assembled?
No
->
1. Check the status of PCB
(inverter) EEV1 assembly
2. Check the status of EEV
assembly
3. Check PCB (inverter) IPM
input signal connectors short-
circuit
--> Refer to CH21 trouble
shooting method
Yes
Is the inverter
compressor sensor
normal?
No
->
1. Check the sensor assembly
status
2. Check if the sensor is broken:
measure resistance
200k
10% (25 °C basis)
Table 18 Error diagnosis and countermeasure chart
6 720 817 722-17.1I
1
