Table 8 Ð Accessing Functions and Subfunctions

OPERATION

KEYPAD

DISPLAY

EXPANSION

ENTRY

RESPONSE

 

 

To access a function, press

 

 

 

subfunction no. and function

 

RESET

RESET SETPOINTS

name key. Display shows sub-

 

 

 

 

function group.

 

 

 

 

 

 

 

To move to other elements,

 

CRT1 x

COOL RESET AT 20 MA

scroll up or down using arrow

 

 

 

 

keys. NOTE: These

 

CRT2N x

COOL RTEMP (NO RESET)

displays do not show if

 

 

 

 

control is not con®gured

 

CRT2F x

COOL RTEMP (FULL RESET)

for reset.

 

 

 

 

 

CRT2D x

COOL DEGREES RESET

 

 

 

 

When the last element in a

 

RESET

RESET SETPOINTS

subfunction has been displayed,

 

 

 

 

the ®rst element is repeated.

 

CRT1 x

COOL RESET AT 20 MA

 

 

 

 

 

 

To move to next subfunction

 

DEMAND

DEMAND LIMIT SETPOINTS

it is not necessary to use

 

subfunction number. Press

 

 

CURRENT TIME AND DAY OF

function name key to ad-

 

TIME

vance display through all

 

WEEK

 

 

subfunctions within a

 

 

 

function and then back

 

SETPOINT

UNIT SETPOINTS

to the ®rst.

 

 

 

To move to another function,

 

 

 

either depress function name

 

 

 

key for desired function

 

X ALARMS

THERE ARE n ALARMS

(display shows the ®rst

 

 

 

subfunction),

 

 

 

or

 

 

 

Access a speci®c sub-

 

 

 

function by using the sub-

 

STAGE

CAPACITY STAGING

function number and the

 

INFORMATION

 

 

function name key.

 

 

 

Table 9 Ð Keypad Directory

STATUS

SUBFUNCTION

KEYPAD ENTRY

DISPLAY

 

COMMENT

 

 

 

 

1 AUTOMATIC DISPLAY

 

Refer to Automatic Display Operation/Default Display section on page 25.

 

 

 

 

 

2 ALARMS/ALERTS

 

X ALARMS

 

Number of Tripped Alarms/Alerts

 

 

R S AL

 

Reset all Alarms/Alerts

 

 

ALARM* X

 

}

 

 

 

ALARM* X

 

 

 

 

ALARM* X

 

Displays Tripped Alarms/Alerts

 

 

ALARM* X

 

 

 

 

ALARM* X

 

 

 

 

 

 

 

 

To toggle between inputs (Yes/No) Press:

(no) or

(yes)

 

 

 

 

 

 

 

3 MODES

 

X MODES

 

Number of Modes in Effect

 

 

X MODE

 

}

 

 

 

X MODE

 

Displays Mode in Effect

 

 

X MODE

 

 

 

 

 

 

 

X MODE

 

 

 

 

 

 

 

 

27

Page 27
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Carrier 30GN040-420 operating instructions Accessing Functions and Subfunctions, Keypad Directory

30GN040-420 specifications

The Carrier 30GN040-420 is a well-regarded model within the industry of chillers, designed to deliver efficient cooling solutions for a variety of commercial applications. Its compact design and advanced technology make it an ideal choice for businesses looking to optimize their HVAC systems.

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In summary, the Carrier 30GN040-420 chiller provides a robust solution for businesses requiring dependable and efficient cooling. Its features, including flexible capacity options, reliable scroll compressors, energy-efficient performance, advanced controls, and quiet operation, position it as a top choice for various commercial and industrial applications. As technology continues to evolve, models such as the 30GN series remain at the forefront, meeting the demands of modern HVAC needs while ensuring sustainability and efficiency.