York YVAG033 - User Manual

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D

C INVERTER AIR-COOLED

CHILLER AND HEAT PUMP

I

nstallation , Operation & Maintenance Manual

FORM NO.:

6U5M-A11M-NB-EN

Y

VAG012~040RSE

Cooke Industries - Phone: +64 9 579 2185 Email: sales@cookeindustries.co.nz Web: www.cookeindustries.co.nz

Table of Contents

Questions and Answers:

M
michaeljonesAug 10, 2025
What to do if York Inverter shows “High Discharge Pressure or Compressor Overload” fault?
- D
  Dennis LoweryAug 10, 2025
  If your York Inverter displays a “High Discharge Pressure or Compressor Overload” fault, several issues could be the cause. Start by checking the condenser fans to ensure they are functioning correctly and blowing air in the right direction. Also, too much refrigerant can cause this issue, so have some removed. Additionally, air in the refrigerant system, a defective discharge pressure switch, a locked compressor motor, or an open compressor internal motor protector could be the culprits. In the last case, verify refrigerant charge, superheat setting, compressor rotation and if the compressor is overloaded.
A
Alyssa DeanAug 18, 2025
What to do if York YVAG033 shows “Low Suction Pressure” Fault?
- V
  vpetersAug 18, 2025
  If your York Inverter displays a “Low Suction Pressure” fault, several things could be wrong. It might be due to a low refrigerant charge, which would require you to repair any leaks and add refrigerant. The BPHE could be fouled or clogged, needing a cleaning. Also, check the EEV wiring or consider replacing the EEV if it's defective. Reduced chilled liquid flow, a defective suction pressure transducer/low pressure switch or wiring, or non-operating fans (in heating mode) could also be the cause. In the case of reduced chilled liquid flow, check the liquid flow rate, pump operation, clean the pump strainer and purge the chilled liquid system of air. If the fans are not operating, check the fan wiring and communication.
A
Anita MayAug 26, 2025
What to do if York YVAG033 shows “Chiller Water Flow” Fault?
- S
  Sean MartinezAug 26, 2025
  If your York Inverter displays a “Chiller Water Flow” Fault, it could be due to several reasons. First, check the chilled liquid flow. Second, too much air in the piping system can cause this, so purge the air through a release valve. Third, ensure the flow switch is installed correctly according to the manufacturer’s instructions. Lastly, the flow switch itself might be defective and need replacement.
S
stuartfarleySep 2, 2025
Why York YVAG033 has no display on wire controller and won't operate?
- B
  Brittany OwensSep 2, 2025
  If your York Inverter wire controller has no display and the unit won't operate, there could be a few reasons. First, there might be no power from the microboard to the 12VDC wire controller, so check the microboard power supply and wiring. Second, there might be no 230VAC to the microboard, so check the power supply and wiring to the microboard. Third, the communication wire between the wire controller and the unit might be defective, so check the communication wiring and contact YORK Service before replacing circuit boards!

York YVAG033 Specifications

General

Brand	York
Model	YVAG033
Category	Inverter
Language	English

Summary

GENERAL SAFETY GUIDELINES

SAFETY SYMBOLS

Explains symbols used in the document to alert readers to specific situations and hazards.

OPERATING CONDITIONS

VOLTAGE, TEMPERATURE, AND MEDIUM LIMITS

INSTALLATION REQUIREMENTS

INSPECTION, HANDLING, AND RIGGING

Procedures for unit inspection, safe handling, and rigging for installation.

SITE SELECTION AND FOUNDATION

Guidelines for choosing an installation site and preparing a suitable foundation.

INSTALLATION CLEARANCES AND SPACING

INSTALLATION CLEARANCES DIAGRAM

WATER SYSTEM INSTALLATION

CHILLED LIQUID PIPING SPECIFICATIONS

Guidelines for selecting pipe materials, sizes, and connections for chilled water systems.

CHILLED LIQUID PIPING INSTALLATION

Recommendations for installing piping, including flow direction, support, and accessory placement.

WATER SYSTEM MANAGEMENT

WATER QUALITY STANDARDS

ELECTRICAL CONNECTION AND SAFETY

FIELD WIRING AND POWER SUPPLY

Instructions for field wiring, recommended copper wiring, and considerations for aluminum wiring.

EXTERNAL INTERLOCKS AND COMPRESSOR HEATERS

CRITICAL ELECTRICAL SAFETY PRECAUTIONS

Crucial safety warnings regarding power supply, wiring, and accessories.

ELECTRICAL DIAGRAMS AND WIRING

WIRE CONTROLLER INSTALLATION

Step-by-step guide for wiring and installing the wire controller.

POWER SUPPLY SPECIFICATIONS

UNIT POWER SUPPLY CABLE SPECIFICATION

Table detailing recommended cable diameters and breakers for power supply.

SYSTEM POWER SUPPLY DISTRIBUTION

UNIT WIRING DIAGRAMS

SINGLE UNIT POWER SUPPLY CONNECTION

ELECTRICAL SCHEMATICS

YVAG012 R ELECTRICAL SCHEMATIC

Detailed electrical schematic for the YVAG012R model.

YVAG014;016;018 R ELECTRICAL SCHEMATIC

Detailed electrical schematic for YVAG014/016/018R models.

YVAG020~033 ELECTRICAL SCHEMATIC

YVAG040 ELECTRICAL SCHEMATIC

WIRE CONTROLLER OPERATION

INTERFACE OVERVIEW

KEY FUNCTIONS

CONTROLLER OPERATIONS

BASIC AND ADVANCED OPERATIONS

SCHEDULE TIMER AND PARAMETER SETTINGS

FAULT DIAGNOSIS

How to access and interpret fault codes displayed on the controller.

RUNNING STATUS AND CONTROL FUNCTIONS

MONITORING RUNNING STATUS

FAULT RESET, KEYLOCK, AND SPECIAL MODES

MAINTENANCE PROCEDURES

IMPORTANT MAINTENANCE NOTES

General important notes regarding maintenance responsibilities and warranty.

COMPRESSOR CARE AND CONDENSER CLEANING

MODBUS PROTOCOL AND SYSTEM CONFIGURATION

MODBUS PROTOCOL DEFINITIONS

SYSTEM SETPOINT CONFIGURATION

SYSTEM PARAMETERS AND FAULT DEFINITIONS

SYSTEM PARAMETER TABLE

FAULT DEFINITIONS

Details fault codes, their causes, and relevant unit/system classification.

TROUBLESHOOTING GUIDE

WIRE CONTROLLER AND CHILLER FLOW ISSUES

Solutions for common problems like no display, unit not operating, and chiller water flow faults.

SUCTION PRESSURE AND DISCHARGE PRESSURE ISSUES

Troubleshooting steps for low suction pressure and high discharge pressure faults.

CONTINUED TROUBLESHOOTING

LEAVING WATER TEMP AND COMPRESSOR START ISSUES

FAN PROTECTION AND COOLING;HEATING EFFECT ISSUES

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