Norcold 121X series, Руководство по обслуживанию

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S
ection
9
75
1 COLD-
9 COLDEST
Screen
1 COLD-
9 COLDEST
Stored Fault History
The second of two stored fault history screens.
It displays stored fault history using lit LED
segments. Segments fault descriptions are
illustrated below.
1 -Thermistor disconnected/
mafunction
6 -AC voltage over 135
volts
2 -Flame present with gas
valve off
5 -Flame sensing (Sr) fault
7 -No cooling sensed
Pressing the
MODE
switch button displays
screen
1 COLD-
9 COLDEST
.
Segment 5: The fault is logged in any
operating mode if any of the following occurs:
1.
Problem in gas sense circuitry (hardware).
2. Gas valve drive circuit present when it is
not supposed to be.
3. Gas valve drive circuit is not present when it
is supposed to be.
4. Internal memory fault.
Segment 6: The fault is logged anytime AC
voltage rises over 135 volts.
Segment 7: The high temperature limit switch
opens when overheating is sensed in the
cooling unit boiler area. The system sensing
algorithm still present and will sense a “no
cool” condition, however it will not lock out
heat sources or display the “no” “co” fault code
in normal display mode.
Screen
1 COLD-
9 COLDEST
Clear Stored Fault History
This screen is used to erase stored fault
history from screens four and five. To clear
fault history:
1. Screen shows
1 COLD-
9 COLDEST
.
2. Press and hold the
SET TEMP
switch button until
1 COLD-
9 COLDEST
appears on the screen.
3. Wait five seconds.
4. Press and hold down the
SET TEMP
button until
1 COLD-
9 COLDEST
appears on the screen.
Pressing the
MODE
switch button displays
screen
1 COLD-
9 COLDEST
.
Screen
1 COLD-
9 COLDEST
Power Board Inputs
Displays “live” power board inputs through lit LED
segments. The assigned LED segments and information
are illustrated below.
1 COLD-
9 COLDEST
3 -Thermistor sensing
temperature
1 -Fresh food compartment light is
off and door is closed
2 -Sensing flame (LP gas
operation)
Pressing the
MODE
switch button displays
screen
1 COLD-
9 COLDEST
.

IMPORTANT
