Carrier Nc 4 Manual

							Carrier Air Conditioning Pty Ltd.  ABN 81 000 024 742 DOC No.  REV. 
The manufacturer reserves the right to discontinue or change specifications or designs at any time without notice and without incurri ng obligations. SU000022 A 
 
OWNERS MANUAL
OWNERS MANUALOWNERS MANUAL OWNERS MANUAL 
 
OPERATING YOUR NETWORKER WALL CONTROL 
 
Networker Components 
The On/Off Button 
This is the button to turn the Networker ON or OFF. 
The Function
 Button. (Fn) 
The function button, when used in conjunction with buttons 1, 2, 4 & 5
 
allows the user to perform specialised functions such as message 
repeating and Networker locking. 
 
The Mode
 Button. 
This button allows you to switch between the available operating modes of 
the attached reverse-cycle air conditioner appliance. 
These include operating as a heater only (heating), operating as a cooler 
only (cooling) or operating as both a heater and cooler (heating and cooling 
with auto-changeover). 
 
The Fixed Control Buttons
. 
These two buttons have their permanent functions written on them. 
 
 AUTO   Switches the Networker between manual operation and Auto 
Program operation. 
 PROG  This button is used to set the Networkers Auto Program settings. 
 
The Variable Control Buttons
. 
These buttons (numbered 1-5) have a function when there is text beside 
the actual button on the display screen. 
 
The Display Screen
. 
Provides you with information about the system.  The Screen shows the 
current time via a Digital Clock
 in the top left corner, the Day of the Week 
on the left-hand side, and the operating mode selected at the bottom. 
Buttons 1, 2, 4 & 5 have additional features when used in conjunction with 
the function button, which is detailed later. 
The Rotary
 Dial. 
This dial is used to alter various settings. 
The display will also show scrolling messages across the top of the screen, 
which can display some of the unit’s operational states. 
 
Setting the Time & Day 
To set the Time and/or Day the Networker must be turned OFF using the 
On/Off button. 
• Press the Clock
 button (Key 5 button) and the screen will display the 
message “Clock setting mode”, and then the Digital Clock will flash. 
• Use the Rotary Dial
 to select the right time. 
• To set the day press the Day
 button (Key 1 button) until the correct 
day of the week appears on the left of the screen, e.g. “Mon”.  
• Press the Clock
 button (Key 5 button) again to save your new 
settings. 
 
Appliance Operating Symbols 
When the Networker is switched on certain operating symbols appear 
describing the operation of the air-conditioner appliance. 
• When the Networker switches ON the attached air-conditioner 
appliance to HEAT, a flame symbol will appear on the screen. 
• When the Networker switches ON the attached air-conditioner 
appliance to COOL, a snowman symbol will appear on the screen. 
• In both cases the fan symbol will also appear on the display and 
appears rotating when the fan of the attached air-conditioner 
appliance is switched on. 
Note: that a flashing flame or snowman symbol indicates that the 
compressor within the air-conditioner appliance is yet to switch ON..
FIG 1  
FIG 3  
FIG 2  
FIG 4   
						

							The manufacturer reserves the right to discontinue or change specifications or designs at any time without notice and without incurring obligations.  
Note: that a flashing fan symbol indicates that the fan within the air-
conditioner appliance is yet to switch ON. 
 
General Operating Symbols 
• The thermometer on the display registers the current room 
temperature with the small marker beside it indicating the 
temperature that the heating/cooling system is currently set to 
maintain. 
• The bar adjacent to the Key 1
 button is displayed when continuous 
fan operation has been enabled using the Key 1
 button. 
• The Econ symbol is displayed when economy operation has been 
enabled using the combination of the Function
 button immediately 
followed by the Key 4
 button 
 
Note: that the actual room temperature appears in the top right of the 
display screen. 
Note: that “continuous” fan operation results in the fan being switched on 
all the time to allow continuous circulation of air. 
Note: that the economy operation is only available for reverse-cycle air-
conditioning systems. 
 
Manual Operation 
• Turn the Networker ON and press the Auto button until ‘Manual’ 
appears near the bottom left-hand corner of the screen.  The Set 
Temperature will now appear at the top of the screen with the current 
room temperature still visible in the top right of the screen. 
• The Set Temperature
 is the temperature the air-conditioning system 
is set to maintain.  To alter it use the Rotary Dial
 to select the 
temperature required. 
• Fan operation can be toggled between automatic and continuous 
operation using the Key 1
 button. 
• Where applicable, economy operation can be toggled on and off 
using the combination of the Function
 button followed by the Key 4 
button.Where applicable the mode of operation can be cycled between heat 
only, cool only and heating/cooling operation using the Mode
 button. 
Note: that the Networker limits the Set Temperature
 to a maximum of 30°C 
and a minimum of 8°C.  If the minimum is exceeded the air-conditioning 
system is switched off and the Set Temperature
 indicated as ‘—‘. 
Note: that the Networker remembers your last settings, and goes back to 
them the next time you select manual operation. 
 
Auto Program Operation 
In Auto Program mode the Networker allows you to preset your air-
conditioner to switch ON or OFF when you wake, leave, return and just 
before you sleep.  Settings that can be defined include: 
• The start time for the period. 
• The set temperature to be maintained. 
• Automatic or continuous fan operation. 
• The Mode of operation (where applicable). 
• Economy operation (where applicable). 
 
In Auto Program mode the Networker has a pre-set Auto-Program for the 
entire week the settings of which are defined in the table below. 
 
Beginning Auto Program Operation 
If the pre-set Auto-Program settings suit your lifestyle then all you need to 
do is run the system in Auto Program mode by following these simple 
steps: 
 
• Use the On/Off
 button to turn the Networker ON. 
• Use the Auto
 button until ‘Auto Program’ appears on the display 
screen. 
 
Temporarily Overriding the Auto-Program Settings 
If these pre-set Auto-Program settings do not suit your lifestyle, you may 
want to temporarily override them by simply using the Networker as you 
would under manual operation, namely: 
 
• To alter the Set Temperature
 use the Rotary Dial to select the 
temperature required. 
• To alter fan operation use the Key 1
 button to toggle between 
automatic and continuous operation. 
• To alter the economy setting use the combination of the Function
 
button followed by the Key 4
 button to toggle the economy operation 
on and off (where applicable). 
• To alter the operating mode use the Mode
 button to cycle between 
heat only, cool only and heating/cooling operation (where applicable). 
 
Period Description Temperature Fan Economy Mode 
Wake Define the time and settings to operate your 
system before you get up in the morning. 20°C AUTO  OFF  HEAT/COOL 
Leave Define the time and settings to operate your 
system when you have left for the day. -- (OFF)  AUTO  OFF  HEAT/COOL 
Return Define the time and settings to operate your 
system just before you get home. 20°C AUTO  OFF  HEAT/COOL 
Sleep Define the time and settings to operate your 
system at night. -- (OFF)  AUTO  OFF  HEAT/COOL 
 
FIG 5  
FIG 7  
FIG 6   
						

							The manufacturer reserves the right to discontinue or change specifications or designs at any time without notice and without incurring obligations.  
The word ‘Temporary’ will flash at the bottom of the display screen until the 
current period ends.
 
 
The ‘Advance Period’ button (Key 2
 button) has now become the ‘Cancel’ 
button.  This button can be used to return the Networker to the settings 
defined for the current time period 
 
Note: that the Networker will revert to the settings defined for the next 
period after the current period ends. 
 
Advancing Time Period 
If the settings defined by the current time period do not suit your lifestyle, 
you may want to use the settings defined by the next time period.  In this 
case the ‘Advance Period’ button (Key 2
 button) can be used to operate 
the system using the settings defined by the next time period. 
 
The word ‘Temporary’ will flash at the bottom of the display screen along 
with the time period advanced to being displayed until the current time 
period ends. 
 
The ‘Advance Period’ button (Key 2
 button) has now become the ‘Cancel’ 
button.  This button can be used to return the Networker to the settings 
defined for the current time period 
 
Permanently Changing the Auto-Program Settings 
 
If your lifestyle doesn’t match the pre-set Auto-Program you can change 
the settings to your requirements by pressing the Prog
 button.  After this is 
done the words ‘Auto Program’ are flashed on the display screen to 
indicate that the Auto-Program settings can be altered. 
 
When changing the settings the Networker combines all the weekdays into 
one block and both days of the weekend into another block, which are 
listed on the left – hand side of the screen.  To toggle the block that you 
want to change the settings for press the Day
 button (Key 1 button). 
 
To select the time period you want to change press the Period
 button (Key 
2 button) until the required time period is displayed. 
The combination of the Function
 button followed by the Key 1 button 
toggles the operation of the Key 1
 button between selecting: 
• The required block of days to program, and 
• Automatic or continuous fan operation. 
 
Note: that when selecting automatic or continuous fan operation ensure 
that the word ‘Fan’ is next to the Key 1
 button. The ‘Time/Temp°’ button can be used to toggle the actual setting the 
Rotary Dial
 alters, namely the time period Set Time or Set Temperature.  
The setting that is flashing is the one that can be altered by the Rotary 
Dial. 
With the block of days and time period to program selected you can now 
program the actual settings, namely: 
• To alter the Set Time
 use the Rotary Dial to select the time required 
when the Set Time
 is flashing. 
• To alter the Set Temperature
 use the Rotary Dial to select the 
temperature required when the Set Temperature
 is flashing.   
• To alter fan operation use the Key 1
 button to toggle between 
automatic and continuous operation when the ‘Fan’ word is displayed. 
• To alter the economy setting use the combination of the Function
 
button immediately followed by the Key 4
 button to toggle the 
economy operation on and off (where applicable). 
• To alter the operating mode use the Mode
 button to cycle between 
heat only, cool only and heating/cooling operation (where applicable). 
• Once all settings have been defined save the new settings by 
pressing the Prog
 button. 
 
Note:  that selecting a Set Temperature
 of (--) will turn the air-conditioner 
OFF for that time period. 
 
Operating the Fan Only 
To simply circulate the air in the house, the fan can be made to run 
continuously. 
With the Networker switched OFF press the Fan
 button (Key 1 button).  
After s small delay a small rotating fan symbol will appear and air should 
begin circulating within the ductwork of your system. 
To switch the fan OFF simply press the Fan
 button (Key 1 button). 
 
Coded Messages 
While the Networker is operating your system, it is also monitoring and 
controlling every aspect of the system’s performance.
FIG 8  
FIG 12  
FIG 9  
FIG 11  
FIG 10   
						

							The manufacturer reserves the right to discontinue or change specifications or designs at any time without notice and without incurring obligations.  
If anything unusual occurs, the Networker will display a message stating 
“Air-Conditioner Fault – R01 Code#?? for assistance call 1300 652 349” 
across the top of the screen. There are two parts to the message: the 
R01 number designates which appliance has the fault, and the Code#?? 
relates to the type of fault.  The screen will also display the spanner 
symbol. 
 
Note: Whenever such a message appears, it is a good idea to write it 
down before doing anything else. 
 
This code contains information that will enable Carrier to deal quickly 
and easily with anything that requires their attention. With many of them 
you will be asked to contact Carrier Service on 1300 652 349 and pass 
on the message, the model and type of appliance. 
 
Message repeating 
Push the Function button followed by the Key 1 button quickly after to 
repeat a message. 
 
Resetting 
If something has interrupted the unit’s operation, the word Reset could 
appear beside the Key 4
 button while a coded message is scrolling 
across the top of the display. 
 
When this is the case the Key 4
 button can be used to re-start the unit. 
If the unit does not resume normal operation or the error message re-
appears, contact Carrier Service. 
 
Locking/Unlocking the Networker 
To prevent any unwanted alterations being made to the operational 
settings, the Networker can be locked via a 4-digit PIN number. In the 
case of dual networkers, if one is locked the other is also locked. 
There can be up to 3 PIN numbers stored into the controller, which 
allows the Networker to be locked or unlocked by various users. If dual 
networkers are installed, the user PIN numbers can only be set from the 
Master Networker.  The Slave Networker can only lock and unlock the 
system and cannot access the PIN numbers. 
 
Setting PIN Numbers 
Push the Function button then the Key 2 button immediately after. The 
screen will then display “Enter Your PIN number to lock the system”. Do 
not enter numbers at this stage, please continue to the next step. 
• Push the Mode
 button once. The screen will now display “User PIN 
number reset – Enter master PIN number”. Do not enter numbers at 
this stage, please continue to the next step. 
• Push the Mode
 button once again. The screen will now display the 
message “User PIN number 1 alteration – Enter current PIN”. If 
this is the first time for setting the PIN numbers the current PIN will 
be “1111”. If the PIN has been previously altered then enter your 
current PIN. 
• The screen will then display the message, “Enter the new PIN”.  
• Enter your new 4-digit PIN number using a combination of Keys 1-5
. 
The screen will now display, “Repeat the entry of the new PIN”.  
• Providing you re-enter the new PIN correctly the screen will now 
display “Valid PIN – PIN altered”. • Repeat this process to change the other PINs if necessary. 
Remembering that all PINs are set as “1111” by default. Pushing the 
Mode
 button, while you’re at the user PIN 1 alteration screen will give 
access to set user PIN numbers 2 & 3. 
• If an incorrect number is entered press the Auto
 button to clear all 
digits, then re-enter your user PIN number. 
• To exit this area at any time simply press the On/Off
 button. 
 
Locking the Networker 
• Push the Function button then the Key 2 button immediately after. 
The screen will now display “Enter Your PIN number to lock the 
system”. 
• Enter your current user PIN number to lock the Networker. The 
screen will now display “System locked out!”  

 If an incorrect number is entered press the Auto
 button to clear all 
digits, then re-enter your PIN number. 
 
Unlocking the Networker 
• Push the Function button then the Key 2 button immediately after. 
The screen will now display “Enter Your PIN number to unlock the 
system”. 
• Enter your current user PIN number to unlock the Networker. The 
screen will now display the message “System unlocked!” 
• If an incorrect number is entered press the Auto
 button to clear all 
digits, then re-enter your PIN number. 
 
Note: If an invalid PIN is entered, the message “Invalid PIN entered – Try 
again” will scroll across the screen. The user has three attempts at 
entering a valid PIN number.  On the third failed attempt the message 
“Invalid PIN entered!” will be displayed.  At this point the Networker will 
abort the PIN entry screen, and resume the state that it was in prior to 
attempting to enter the PIN.  You can immediately retry entering the PIN 
numbers, or if you cannot remember the PIN numbers, call Carrier Service 
on 1300 652 349. 
 
Dual Networker Operation (Where Applicable) 
It is possible to have two networkers connected to the system. The two 
networkers will operate together, one will be configured as a Master and 
the other a Slave, and the settings for the system will be common on both 
controllers. 
 
The benefit of having two controllers is the convenience of making 
adjustments to the settings as an adjustment made on one of the 
networkers is immediately reflected on the other Networker. When locking 
one of the networkers the other one will also be locked, and the system 
can be unlocked at either Networker.  
 
By default the Master Networker senses room temperature as is indicated 
by the flashing heart symbol. 
Note: that only the Master control has the ability to set the clock time, this 
is one way of identifying which controller is the Master – Look for the word 
‘clock’ beside the Key 5
 button while the system is in the OFF position. 
 
FIG 13