Hussmann NAV Series, Installation & Operation Manual

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P/N 2400204_H 5-1
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
Service Deli Merchandisers
REPLACING DISPLAY LAMPS
Remove the plastic shield to replace LED
lamps. The switch on the back side of the
merchandiser controls the lights.
Display lamp
SERVICE
— LOCK OUT / TAG OUT —
To avoid serious injury or death from electri-
cal shock, always disconnect the electrical
power at the main disconnect when servicing
or replacing any electrical component. This
includes, but is not limited to, such items as
doors, lights, fans, heaters, and thermostats.
Product will be degraded and may spoil if
allowed to sit in a non-refrigerated area.
TROUBLESHOOTING GUIDE
PROBLEM
Compressor will not
start (no noise)
Compressor will not start;
cuts out on overload
PROBABLE CAUSE
1. Power disconnected
2. Blown fuse or breaker
3. Defective or broken wiring
4. Defective overload
5. Defective temperature
control
1. Low voltage
2. Defective compressor
3. Defective relay
4. Restriction (pinched cap tube)
5. Restriction (moisture)
6. Condenser blocked with
dust and dirt
7. Defective condenser fan
motor
SOLUTION
1. Check service cord or
wiring connection
2. Replace fuse or reset
breaker
3. Repair or replace
4. Replace
5. Replace
1. Cabinet voltage must not
be more than 5% below rating
2. Replace
3. Replace
4. Repair or replace
5. Leak check, replace drier
evacuate and recharge
6. Clean condenser
7. Replace