TROUBLESHOOTING GUIDE
5-2
Warm compartment
temperatures.
Questions:
What are zone temperatures
and setpoints?
Is zone indicator flashing?
Is compressor running?
Is door alarm beeping with
door shut?
Is condenser dirty?
Electronic Control function.
1. Control shut off.
2. Control setpoint is too warm.
3. Zone thermistor malfunction.
NOTE: If a thermistor is unplugged or
replaced, the unit must be turned
OFF at the master power switch, then
back ON to clear the error mode.
Insufficient condenser air,
1. Clogged condenser.
2. Condenser fan obstructed or
faulty.
3. Kickplate/grille restricted.
Door/drawer air leak.
1. Food obstructing door/drawer
closing.
2. Door/drawer gasket twisted or
torn.
3. Door hinge binding
(700TR, 700TC/I, 700TF/I only).
4. Drawer close tripped backwards.
Poor air ducting.
1. Air leakage past vertical duct
dividers.
2. Air duct restriction.
1. If “--” is displayed, unit is off. Press
“COLDER” key to start the unit.
2. Press “ZONE” key to check setpoints.
Zone indicator will flash. Displayed tem-
perature is now the setpoint. Set
zone(s) to colder temperature(s).
3. If “-20-” is displayed with zone indicator
flashing, thermistor in that zone is
unplugged or faulty. Repair wiring or
replace thermistor. If “-55-” is displayed
with zone indicator flashing, thermistor in
that zone is shorted. Repair wiring or
replace thermistor.
NOTE: Resistance of thermistor should be
approximately 32500 ohms at 32
o
F, 10000
ohms at 77
o
F.
1. Clean condenser and instruct customer.
2. Check condenser fan, clear obstruction
or replace.
3. Remove restriction.
1. Remove obstruction.
2. Repair or replace gasket.
3. See DOOR CLOSING CHECK AND
REPAIR PROCEDURES at end of
Troubleshooting Guide.
4. Trip drawer closer forward.
1. See TC/I Air Seals at the end of
Troubleshooting Guide.
2. Adjust vertical duct divider(s) and/or
remove blockage.
GENERAL TROUBLESHOOTING GUIDE
Complaint Possible Cause Correction
CAUTION! Low voltage.
DO NOT apply 115 volts.
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