U-Line 3090WCWC User Manual page 67

USER GUIDE
SAFETY • INSTALLATION & INTEGRATION • OPERATING INSTRUCTIONS • MAINTENANCE • SERVICE
ID Description
L Zone T Left Zone thermistor
Short circuit shorted.
R Zone T Right Zone thermistor
Short circuit shorted.
L Evap T Left evaporator
Short thermistor circuit short.
R Evap T Right evaporator
Short thermistor circuit short.
Amb Ambient thermistor
Thrm circuit shorted.
Short
L Temp Left Zone temperature
Hi 6H+ +10°F (5°C) over set
point for over 6 hours.
R Temp Right Zone
Hi 6H+ temperature +10°F
(5°C) over set point for
over 6 hours.
L Temp Left Zone temperature
Hi 12H+ +10°F (5°C) over set
point for over 12 hours.
Solution
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.
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?
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?
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?
ID Description
R Temp Right Zone
Hi 12H+ temperature +10°F
(5°C) over set point for
over 12 hours.
L Temp Left Zone temperature
Lo 6H+ -10°F (5°C) under set
point for over 6 hours.
R Temp Right Zone
Lo 6H+ temperature -10°F
(5°C) under set point
for over 6 hours.
L Temp Left Zone temperature
Lo 12H+ 10°F (5°C) under set
point for over 12 hours.
R Temp Right Zone
Lo 12H+ temperature +10°F
(5°C) under set point
for over 12 hours.
L Door Left door switch open
Open 5M for more then 5
minutes.
R Door Right door switch open
Open 5M for more then 5
minutes.
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
and press to confirm.
u-line.com
Solution
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?
Verify thermistor
connections are clean and
dry. Verify thermistor
resistance. Verify correct
operation of zone valve.
Verify thermistor
connections are clean and
dry. Verify thermistor
resistance. Verify correct
operation of zone valve.
Verify thermistor
connections are clean and
dry. Verify thermistor
resistance. Verify correct
operation of zone valve.
Verify thermistor
connections are clean and
dry. Verify thermistor
resistance. Verify correct
operation of zone valve.
Check door switch magnet
reed switch alignment
when door is in closed
position. Check reed switch
connection at the harness
and the main board.
Check door switch magnet
reed switch alignment
when door is in closed
position. Check reed switch
connection at the harness
and the main board.
to select "Clear Errors"
Control Operation - Service 3