Automatic Pti Step No. And Contents; Automatic Pti Alarm - Daikin LX10F11B3 Service Manual

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3.3.1 Automatic PTI Step No. and Contents

During PTI operation, Step No, contents, and select PTI (Short, Full, Chilled or Frozen) will be displayed.
Step No.
P00 Controller data check
P02 Alarm check on all sensors
P03 PCC check / EFM check
P04 SS, RS accuracy check
P06 HPT, LPT accuracy check
P08 INV check
P10 ESV & EMV check
P12 LSV check
P14 HSV check
P16 RSV check
P18 DMV check
P20 HPS check
P22 Pump down check
P24 Valve leak check
P50 0℃ pull-down
P60 0℃ control maintenance
P70 Defrost test
P80 -18℃ pull-down
P90 -18℃ control maintenance

3.3.2 Automatic PTI Alarm

Alarm code T＊＊＊ is displayed for Automatic PTI.
Step
Contents
No.
Controller
P00
data
Alarm Same as
P02 check on
all sensors operation
EFM
check
P03
PCC
check
RS, SS
P04
check
HPT, LPT
P06
check
Contents
Alarm
Conclusion
code
No
No conclusion
alarm
Same as normal
normal
operation
EFM operation current is
T031
large at high and low speed.
EFM operation current
T032 is small at high and low
speed. (Broken wire?)
T033 Current is small.
T034 A current is present. PCC failure (welding)
The temperature difference
of SS and DSS is large.
T041
The temperature difference
of RS and DRS is large.
The pressure
T061 difference of HPT
and LPT is large.
Short PTI Full PTI
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓
✓
✓
✓
✓
Possible cause
Same as normal
operation
Faulty motor coil
Faulty operation of
magnetic contactors
EFM wiring fault
PCC failure (broken wire)
SS Failure
RS Failure
HPT Failure
LPT Failure
3-6
Chilled PTI Frozen PTI
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓
✓ ✓
✓
✓
Check method
Same as normal
operation
Check motor coil
Check of magnetic
contactors operation
Check wiring
Check PCC wiring and
contact points.
Check PCC wiring and
contact points.
Compare the SS with the
DSS on the control panel.
Compare the RS with the
DRS on the control panel.
Compare the high-pressure value
between HPT and manifold gauge.
Compare the low-pressure value
between LPT and manifold gauge.