Carrier Supra 650 Service Manual download pdf (Page 37)

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2.4.10 Functional Parameters

NOTE

If configuration CNF11 is “ON” functional pa-

rameters are locked out and the ability to

change functional parameters from keypad is

disabled.

The Function Parameters control selected operating

features of the unit. These parameters can be displayed

by pressing the FUNCTION CHANGE key. When multi-

ple choices are available, the display will show the func-

tion description on the left side with the corresponding

function choice on the right side. The list can be scrolled

through by pressing the FUNCTION CHANGE key or by

using the ARROW keys. With each FUNCTION

CHANGE key push, the list is advanced one. If the

FUNCTION CHANGE key is pressed and held for one

second, the list will scroll at a rate of one item every 0.5

seconds. Once the end of the list is reached the list will

scroll back to the first entry.

With a function parameter displayed, the data choice

can be changed by pressing ENTER then pressing ei-

ther the up or down ARROW keys. The displayed choice

will then flash to indicate that the choice has not been

entered. Depress the ENTER key to activate the new

choice. The display will stop flashing to indicate that the

choice has been entered.

If the new choice is not entered in 5 seconds, the display

will revert back to the last entered choice. All function

parameters are retained in memory. Descriptions of the

function parameters and operator choices are provided

in the following paragraphs. A function parameter listing

is also provided in Table 2-1.

Defrost Interval

The English display for Defrost Interval is “DEFR” the

code display is “FN0.” The choices are displayed with

one decimal place and then the capital letter H for hours

(i.e., DEFR 12.0H). The defrost choices are 1.5, 3, 6 or

12 hours.

Speed Control

The Speed Control parameter overrides the normal mi-

croprocessor speed control solenoid operation. Param-

eter English displays are “CITY SPD” or “HIGH SPD.”

The code displays are “FN1 ON” or “FN1 OFF.” With

“CITY SPD” or “FN1 ON” displayed the unit is locked

into low speed. With “HIGH SPD” or “FN1 OFF” dis-

played, speed is under normal microprocessor control.

Minimum Off-Time

The auto start mode Minimum Off-Time parameter En-

glish display is “OFF T” the code display is “FN2.” The

choice for the off-time is displayed with two digits and

then the capital letter M for minutes (i.e. OFF T 20M or

FN2 20M). The off-time choices are 10, 20, 30, 45 or 90

minutes.

Minimum On-Time

The auto start mode Minimum On-Time parameter En-

glish display is “ON T.” The code display is “FN3.” The

choice for the on-time is displayed with two digits and

then the capital letter M for minutes (i.e. ON T4 M).The

on-time choices are 1 or 4 minutes.

Controlling Probe

The Controlling Probe parameter English displays are

“REM PROBE” or “SUP PROBE.” The code displays

are “FN4 A” or “FN4 B.” With “REM PROBE” or “FN4 A”

displayed, the microprocessor is set for operation with a

single probe sensing return air temperature. With “SUP

PROBE” or “FN4 B” displayed, the microprocessor is

set for dual probe (supply air or return air) control.

Standard Units Select

The Standard Unit Select parameter allows selection of

English or metric data display. The English display is DE-

GREES F or C. The code display is FN5. The choices

are_C and _F. This parameter will also convert pressure

readings to psig or bars.

Maximum Off Time

The auto start mode Maximum Off Time English display

is “TIME START” or “TEMP START” the code display is

“FN6 ON” or “FN6 OFF.” With “TIME START” or “FN6

ON” displayed the engine will be started 30 minutes

after shutdown. With “TEMP START” or “FN6 OFF”

displayed the engine will be under normal microproces-

sor temperature control.

Diesel Backup Feature:

If the unit is in standby mode and AC power is lost for five

minutes or more, the diesel engine will start and run until

AC power is restored and applied for five minutes. The

ROAD icon will blink once every second while the PLUG

icon will stay on constantly to indicate that this feature is

active.

When the five minute shutdown timer expires and AC

power is present, the unit will shut down the diesel en-

gine and restart the standby motor. If AC power is NOT

present, the diesel engine will operate.

If the unit is set to “TEMP START” the standby diesel

back up feature will be turned off and the unit will operate

in normal standby mode.

MOP STD - Future Expansion

Used to add or subtract 5psig (0.34 Bar) to unloader

equat

ions. English display is “MOP STD.” The code

displayis“FN7”

Compartment 2 Setpoint - N/A

English display is “2SET.” The code display is “FN8”

Compartment 3 Setpoint - N/A

English display is “3SET.” The code display is “FN9”

Auto/Manual Start Operation

The English displays for Auto/Manual Start Operation

are “AUTO OP” and “MAN OP.” The code displays are

“FN10 ON” and “FN10 OFF.” With “AUTO OP” or “FN10

ON” displayed the unit will be in the Auto Start/Stop

Operation mode. With “MAN OP” or “FN10 OFF” dis-

played the unit will be in the Manual Start mode.

To start the unit in manual start mode, the Auto Start/-

Stop - Continuous Run selection must be in “continuous

run” mode.

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Comments to this Manuals

Hermes Hurtado 13 Mar 2025 | 11:43:58

Soy mecánico mantenedor. Necesito manuales técnicos

Carrier Supra 650 Service Manual Page 37

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