York Chiller YCIV Lockout: HPCO Fault

Hello from Belize. We have a York Chiller YCIV0207SA. Recently we have gotten a Lockout on compressor 2 : HPCO Lockout. We have checked all fuses and have also changed out the Relay Circuit Board 031-02479-002 for compressor 2 and it did not work.

I have noticed that when the compressor is ramping up it does not on the display menu for compressor 2, the section where it says fan on, there is no indication that the fans are starting up. Have tried manually giving power to contactors and fans all are working, therefore no fuses are bad. Any help would be greatly appreciated. Below are the reading on the display before it goes to HPCO fault. Maybe I am missing something.

Pressures :Suction = 67 Discharge =113

Temperatures: Suction=83.0 Discharge=130.5

Suction: Superheat = 15.7 Sat Temp = 66.9 Temp=82.6

Discharge: Superheat= 32.2 Sat temp=99.2 Temp = 131.4

Motor Temps T1=118.0 T2=137.3 T3=123.2

Speed 33.8% Econimizer Solenoid = off

Suction Superheat =15.5

Drain Valve = 5.4%

Fans On = 0

Check discharge pressure transducer, and that valve for transducer is open.

check fuses for second stage fan circuit.

check with a set of gauges on the system to confirm the readings are correct. Or is there a deviation to the display to the actual pressure readings.

do the KISS program.

Keep

It

Simple

Sunshine