Daikin EWWD750CJYNN [2/28] Contents

Contents

This manual provides installation, setup and troubleshooting information for the control panel of the Chillers with

Frame 4000 and 3200 screw compressor.

All operational descriptions contained in this manual refer to control software ver. 10.100 and subsequent revisions.

Chiller operating characteristics and menu selections may be different from other versions of the control software.

Contact Daikin Service for software update information.

Installation precautions

Warning

Electric shock hazard. Injury to personnel or damage to equipment may occur. This equipment must be properly

grounded. Connections and service of the control panel must be performed only by personnel that are knowledgeable in

the operation of the equipment being controlled.

Caution

Static sensitive components. A static discharge while handling electronic circuit boards can cause damage to the

components. Discharge any static electrical charge by touching the bare metal inside the control panel before

performing any service work. Never unplug any cables, circuit board terminal blocks, or power plugs while

power is applied to the panel.

Temperature and humidity considerations

The controller is designed to operate within an ambient temperature range of –40°C to +65°C with a maximum relative

humidity of 95% (non-condensing).

1. General description

The control panel contains a microprocessor based controller which provides all monitoring and control functions

required for the safe, efficient operation of the Chiller. The operator can monitor all operating conditions by using the

panel’s built in 4-line by 20-character keypad/display or by using an IBM compatible computer running monitor

software release 2.0 or later. In addition to providing all normal operating controls, the controller monitors all safety

devices on the unit and takes corrective action if the chiller operates out of its normal design conditions. If a fault

condition occurs, the controller will shut-down the system and activate an alarm output. The most important operating

conditions at the time an alarm condition occurs are retained in the controller’s memory to aid in troubleshooting and

fault analysis.

The system is protected by a password scheme which only allows access by authorized personnel. A password must be

entered into the panel keypad by the operator before any configuration can be altered.