USER GUIDE
Control Operation - Service 2
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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 and for 5
seconds.
Actual Temps
The Actual Temp option in the service menu will display
raw thermistor readings without calculating offsets.
1. Press to select “Actual Temps”.
2. Press .
3. Use
and
to
scroll
through available thermistor
readings.
To exit the Actual Temps menu press to select “Return
to Menu” and press to confirm.
All Errors
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 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.
Up
Select
Down
RETURN TO MENU
ACTUAL TEMPS
ZONE = 2°C
EVAP = °C
Up
Error ID
Number
Of Occurrences
Select
Down
RETURN TO MENU
ALL ERRORS
NO COMM 0
ZONE T OPEN 0
ID
Description
Solution
No
Comm
Unit lost
communication to
the display.
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.
Zone T
Open
Zone thermistor
circuit open.
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.
Evap T
Open
Evaporator
thermistor circuit
open.
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.
Amb
Thrm
Open
Ambient
thermistor circuit
open.
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.
Zone T
Short
Zone thermistor
circuit shorted.
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.
Evap T
Short
Evaporator
thermistor circuit
short.
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.
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