3-44
3.7.2.2 Short PTI (S.PTI)
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Step display and content
※
1 If the ambient temp is –10˚C or lower, the function check of the solenoid valve cannot be preformed
correctly, short circuit the terminals 121 and 102 on the terminal board, and check the operation of
the solenoid valve.
※
2 If the difference between ambient temperature and return air temperature is 15˚C or higher, these
steps will be skipped.
※
3 Step No. are indicated in LED display.
Step
Frozen
P02
P90
P00
P80
Content
Short
PTI
Full
PTI
Chilled
Basic data record (container No., date, time, compressor
integrated run-hour, ambient tempera ture)
Alarm check on all sensors
P04
Power conditions (voltage and frequency) check
P05
Compressor start running check
P06
Actuating pressure check at OFF and ON of High pressure switch (HPS)
P08
Pump-down check
P10
Solenoid valve leakage check
•Liquid solenoid valve (LSV)
•Injection solenoid valve (ISV)
•Hot gas solenoid valve (HSV)
•Defrost solenoid valve (DSV)
•Discharge gas by-pass (BSV)
•Economizer solenoid valve (ESV)
P12
Supply and return air sensor (SS and RS) accuracy check
P14
Pressure sensor (HPT and LPT) accuracy check
P16
Evaporator fan high and low-speed operation check
P18
Start up
P20
Economizer solenoid valve (ESV) opening or closing check
※
1
※
2
P22
Discharge gas by-pass solenoid valve (BSV) opening or closing check
※
2
P24
Defrost solenoid valve (DSV) opening or closing check
P26
Standard pull-down operation
P28
Suction modulating valve (SMV) operation check
P29
Electronic expansion valve (EV) operation check
P30
Injection solenoid valve (ISV) opening or closing check
※
2
P32
Hot-gas solenoid valve (HSV) and Reheat coil solenoid
valve (RSV -optional) opening or closing check
P50
Check on pull-down to 0˚C
P60
Check on controllability of chilled mode operation.
P70
Check on defrosting
Check on pull-down from 0˚C through –18˚C
Check on controllability of frozen mode operation
Chilled PTI
ChP10
Example: Step No.10
Short PTI
Full PTI
Frozen PTI
SP 10
FP 10
FrP10
Custom PTI
Custom PTI
Custom PTI
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