Manual Repairing Refrigerating Unit - Panasonic NR-B203G-S7 Service Manual

XI. METHODE TO REPAIRING REFRIGERATING UNIT
CONDITION I. NOT COLD
Compressor not run
CHECK
Both terminal direct
Compressor run
joining
Compressor not run
Power source broken
(Start Voltage not
enough )
Starting P.T.C. broken
Compressor noise but
not run
Motor winding
disconnect
Starting Motor burn
Compressor run but not
Cooling Unit brooken
compress
CONDITION II. COLD LESS
Short time
Compressor running
Long time
Evaporator closed by
Out side Evaporator
frost to more
Evaporator not close by
frost
Cold Less
CONDITION III. VERY COLD
Assembly censor
cappilary Thermostat
CAUSE SUSPECT
Compressor run
OLP broken
Starting PTC broken
Motor winding burn
Check Starting P.T.C.
Voltage under load
Check with
M.Tester
Check with M.Tester
Gas leakage
Operation fault
Joint pipe leakage and
clogged
The door have more
gap
Open the door very
long time
Censor cappilary
Thermostat have more
gap
Thermostat broken
Thermostat not have
voltage
-9-
ANALYSIS
Check with Ohm Meter
Change Thermostat
( Tester )
Check with M.Tester Change O L P
Change Starting PTC
Check with M.Tester
Change Compressor
Check with M.Tester
Repair Power Source
Change PTC Starting
Change Compressor
Change Compressor
Repair gas leakage and
Be found gas residu
re-charge
Gas nothing Spray with gas
Change Thermostat
Thermostat broken
Very Cold Touch Defrost button
Repair at cooling unit
Cooling Unit broken
portion
Repair at cooling unit
Check Cooling Unit
portion
Adjust the door
Give the direction to
customer
Setting end of Censor at
center hole
Check with M.Tester Change Thermostat
Repair Thermostat
Check with M.Tester
wiring
ACTION