BBR Service Manual Advanced Troubleshooting Guide / Section 1.3
For Technical Support, Call 800-537-2653. Copyright 2006 Franke, Inc. All rights reserved.
The Problem Possible Cause What To Check & Do
Breaker OK? Yes = Continue; No = Call
electrician
Power not available to
unit?
Receptacle OK? Yes = Continue; No = Call
electrician
Switch ON but
Power Not “ON”
Power cord OK? Yes = Continue; No = Replace power cord set.
Per Section 2.12.
Compressor thermal
overload tripped?
Unplug refrigerated case power cord for 1 hour,
then retry. If problem reoccurs:
1. Ensure air filter is maintained per PM
Service Instructions
2. Ensure condenser coil is clear of debris
and cleaned, per PM Service Instructions
Power disconnected to
temperature controller
Check input voltage to temperature controller.
Replace wiring harness if damaged.
Temperature controller
disconnected from
condensing unit
Check output voltage at temperature controller.
Replace wiring harness to Condenser, if
damaged
Sensor cable is damaged
or disconnected from
controller to refrigeration
compartment
Connect or replace sensor cable per Section
2.10
Main Power “ON”
But Compressor
Does Not Run
Temperature controller is
defective
Replace defective component per Section 2.9 or
2.9A
Set point too high Adjust thermostat setting, per Section 3.1
Door is being latched or
blocked open for extended
periods.
Discuss case loading and use procedures with
unit manager and crew.
Door frame damaged or
thermo-pane seal has
failed
Inspect glass doors and door tracks for damage.
If needed, replace per Section 2.2
Evaporator fan not
functioning
Check wiring and inspect fan for blockage.
Replace evaporator fan motor if necessary, per
Section 4.3
Evaporator coil blocked
with ice
Check Troubleshooting Problem: Evaporator I s
Blocked With Ice. Page 2
Inspect service valves, lines, joints and
components for signs of leaks, kinks or
restrictions.
Refrigerant charge is not
correct
Service condensing unit per Section 4.6
Compressor Is
Running But Case
Does Not Cool To
34 to 40° F
Condensing unit does not
start
Inspect and test condenser electrical components
for defects (start-capacitor, run-capacitor, start-
relay, condenser fan, compressor…)
Evaporator Is
Blocked With Ice.
Thermostat set point is too
low.
Adjust thermostat setting, per Section 3.1.
Continued…