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USER GUIDE
SAFETY • INSTALLATION & INTEGRATION • OPERATING INSTRUCTIONS • MAINTENANCE • SERVICE
SERVICE MENU
In addition to a feature rich customer menu, the 3000
series also offers a service menu with the ability to
fine tune and monitor unit operation.
To initiate the Service menu hold both
seconds.
Actual Temps
Up
Down
The Actual Temp option in the service menu will
display raw thermistor readings without calculating
offsets.
1.
Temps".
.
2.
and
3. Use to scroll through available thermistor
readings.
To exit the Actual Temps menu press
"Return to Menu" and press
All Errors
Up
Down
The All Errors option keeps record of any system
errors. When an error occurs it is recorded to all errors.
The number next to the error indicates the number of
recorded instances. Errors in the log may not be
and
Select
RETURN TO MENU
ACTUAL TEMPS
ZONE = 2°C
EVAP = °C
Press
to select "Actual
Press
to select
to confirm.
Number
Error ID
Of Occurrences
Select
RETURN TO MENU
ALL ERRORS
NO COMM 0
ZONE T OPEN 0
currently active. The error log memory is non volatile
and is persistent should power be lost and restored to
the unit. See below for a list of logged errors and their
respective descriptions.
ID
Description
for 5
No
Unit lost
Comm
communication to
the display.
Zone T
Zone thermistor
Open
circuit open.
Evap T
Evaporator
Open
thermistor circuit
open.
Amb
Ambient
Thrm
thermistor circuit
Open
open.
Zone T
Zone thermistor
Short
circuit shorted.
Evap T
Evaporator
Short
thermistor circuit
short.
u-line.com
Solution
Unplug
the
communication
cable from the user interface.
Check
the
black
to
red
conductors looking for 5 VDC.
If voltage is present replace
the
user
interface.
If
no
voltage is present check for 5
VDC at the main board where
the
communication
cable
plugs onto the pins for the red
and black conductors. If 5
VDC is not present replace the
main control board. If 5 VDC
is
present
replace
the
communication cable.
Check thermistor connection
to harness for moisture or
corrosion.
Also
check
connection where thermistor
harness
attaches
to
main
board. If connections are valid
replace the thermistor.
Check thermistor connection
to harness for moisture or
corrosion.
Also
check
connection where thermistor
harness
attaches
to
main
board. If connections are valid
replace the thermistor.
Check thermistor connection
to harness for moisture or
corrosion.
Also
check
connection where thermistor
harness
attaches
to
main
board. If connections are valid
replace the thermistor.
Check thermistor connection
to harness for moisture or
corrosion.
Also
check
connection where thermistor
harness
attaches
to
main
board. If connections are valid
replace the thermistor.
Check thermistor connection
to harness for moisture or
corrosion.
Also
check
connection where thermistor
harness
attaches
to
main
board. If connections are valid
replace the thermistor.
Control Operation - Servi
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