Friedrich kuhl r-410a 用户手册

12

appears on screen.  The word “

” appears next to the 

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The 

 alert is issued when the fan run 

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This alert may be reset by the user (Refer to Special Functions, Filter Reset).
Maintenance Required – When maintenance is required, a service  icon 

 appears on screen.  This icon will not be dismissed until maintenance 

has been performed.  If the service icon 

the icon 

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is established the service icon 

 goes away.

Wait – The WAIT icon 

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lli

 

Whenever the compressor shuts off, system pressures must be allowed 

to equalize.  At this time, an internal timer begins a count-down from up to 

240 seconds.  If a demand for heat or cool occurs during this count-down 

the WAIT icon 

 displays letting you know that the compressor will not 

operate until the count-down has completed.  This timer prevents damage 

to the unit if it tries to start too quickly after it stops running.  Normally the 

WAIT icon 

 is off.  Once the timer has cleared, the air conditioner will 

heat or cool based on the temperature setting.  Electric heat is not affected 

by this timer.
Protection Alert (Freeze) – If the room freeze protection is active, the 

display indicates this by showing Room Freeze Protection "FRZ".  Once 

 

temperature is less than 40° F (4° C), and the air conditioner is equipped with 

electric heat, the room freeze protection will activate.  The air conditioner 

will run high fan and electric heat until the room temperature reaches  

46° F (8° C).  Pressing the 

 button delays the freeze protection function 

Low Battery – When the battery is low a warning display 

 will be 

inserted before other messages such as “COOL”.  If the Low Battery 

 alert is on, the battery in the control unit must be changed.  Refer 

to the changing the battery procedure.  Once the battery is changed, the 

alert message will go off.  Refer to Troubleshooting Tips.  Under normal 

conditions the battery life should be greater than 7 years.

Sp

(The control system has five (5) customer alerts)

ecial Functions

Panel Lock     – The front panel push buttons can be locked to prevent 

inadvertent operation.  To lock the front panel, press and hold the 

SCHEDULE

 + 

  buttons for three (3) seconds.  A double beep indicates your mode 

change was successful and a   icon appears on the display.  To unlock 

the display, press and hold the 

 + 

  .

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The   icon will no longer be visible.
Filter Reset –

 icon displays, the timer may be reset by pressing 

and holding the 

 button for three (3) seconds.  A beep indicates the 

system timer was reset and the 

 icon and the word "

RESE T

" will 

no longer be visible.
User Menu Functions – The User Menu Functions allows you to change 

the following selections: Set TIME, 12/24 Hour Clock Format, BEEP ON / 

OFF, DIM ON / OFF, Emergency Heat (EMHT) ON / OFF, Auto BAND Adjust,  

F/ C Select, FRZ ON / OFF, Temp Offset (TO) and the Automatic Temperature

To enter the User Menu, press and hold 

 for 3 seconds, the TIME 

selection appears.  Use the 

 (UP) or 

 (DOWN) buttons to scroll 

through the User Menu.  Press the 

 button to enter the displayed 

function.  If left inactive for 15 minutes  the User Menu display will no longer 

be visible and it returns to normal operation mode display.  To manually 

exit the User Menu, press the 

 button.

Time Setting – When in the User Menu, on the Control Panel, use the 

 (UP) and 

 (DOWN) to select TIME.  Push 

, the hours segment 

 (UP) and 

  

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( 

 (UP) and 

 (DOWN) 

to set the minutes, then push 

.  

NOTE:   If the AM or PM indicator is incorrect, push 

 until the hours 

 (UP) or 

 (DOWN) to advance 

the hour segment 12 hours, then push 

.  The day of the week 

displays.  Use the 

 (UP) or 

 (DOWN) to select the current 

day.  Press the 

 key to save and go back to the TIME screen. 

Press 

 (UP) to go to the next menu 1224.

NOTE: Pressing 

the   button again will exit the user menu function 

mode.  Or simply leave the control inactive for 15 minutes and 

the control will return back to normal operation. 

The hour digits flash first. The user presses the       or
to change the hours. To change AM-PM, the hours must be
advanced 12 hours. Press the         key to change to the
minutes. To exit the selection process, user presses the
key which will go to the time screen.
 

The minutes digits flash. The user presses the       or
to change the minutes. Press the         key to change the days.
To exit the selection process, the user presses the          key
which will go to the time screen.
 

The dot underneath the days of the week begins to blink to
indicate which day it is. If the user has not set the date before,
the dot starts on Monday. If the user is making a correction to
previously set information the dot appears under whichever
day the unit thinks it is. The user can press        or       to move
the dot left or right (respectively) along the week. The user
presses            to loop back to the hours setting. To exit the
selection process, the user presses the          key which will go
to the time screen.
 

Tuesday has been selected. The user presses         to loop
back to the hours setting. To exit the selection process and
accept the changes, the user presses the        key which will go
to the time screen. 

BACK

Sensing Feature (ATSF).

SCHEDULE