USER GUIDE
Control Operation - Service 3
u-line.com
SAFETY • INSTALLATION & INTEGRATION • OPERATING INSTRUCTIONS • MAINTENANCE •
SERVICE
To access All Errors follow the steps below.
1. Press to select “All Errors”.
2. Press .
3. Press and to scroll through available
information.
To clear the error log press to select “Clear Errors” and
press
to
confirm.
To exit the Actual Temps menu press to select “Return
to Menu” and press to confirm.
Relay Status
Relay status displays the current state of each relay. While
all available relays are displayed, only a portion are used.
NOTE: The Cond (Condenser Fan) will switch state with
the compressor relay, however the condenser fan is
actually powered through a DC output. Condenser fan
status can be viewed through the “Output” service menu
option.
To access Relay Status
1. Use to select “Relay Status”.
2. Press .
3. Press and to scroll through available
information.
To exit the Relay Status simply press to exit.
Amb
Thrm
Short
Ambient
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.
Temp Hi
6H+
Zone temperature
+10°F over set
point for over 6
hours.
Is condenser coil clean? Is
condenser fan operating? Check
zone thermistor for correct
resistance. Verify thermistor
connections are clean and
intact. Check zone valve
operation. Sealed system issue?
Temp Hi
12H+
Zone temperature
+10°F over set
point for over 12
hours.
Is condenser coil clean? Is
condenser fan operating? Check
zone thermistor for correct
resistance. Verify thermistor
connections are clean and
intact. Check zone valve
operation. Sealed system issue?
Temp Lo
6H+
Zone temperature
-10°F under set
point for over 6
hours.
Verify thermistor connections
are clean and dry. Verify
thermistor resistance. Verify
correct operation of zone valve.
Temp Lo
12H+
Zone temperature
-10°F under set
point for over 12
hours.
Verify thermistor connections
are clean and dry. Verify
thermistor resistance. Verify
correct operation of zone valve.
Door
Open 5M
Door switch open
for more then 5
minutes.
Check door switch magnet reed
switch alignment when door is in
closed position. Check reed
switch connection at the harness
and the main board.
ID
Description
Solution
ID
Description
Availability
Mull
Mullion Heater
Not Used
Cond
Condenser Fan
Not Used
Def
Defrost Valve
Not Used
Pan
Pan heater
Not Used
Comp
Compressor
Used
Up
Select
Down
RETURN TO MENU
RELAY STATUS
MULL COND DEF LVLV
OFF OFF OFF OFF
68