COMPRESSOR – TROUBLESHOOTING CHARTS
TROUBLE
COMMON CAUSE
REMEDY
WON’T START. NO HUM.
Open line circuit.
Check wiring, fuses, receptacle.
Protector open.
Wait for reset—check current.
Control contacts open.
Check control, check pressures.
Open circuit in stator.
Replace stator or compressor.
WON’T START. HUMS
Improperly wired.
Check wiring against diagram.
INTERMITTENTLY.
(cycling on protector)
Low line voltage.
Check main line voltage, determine location of
voltage drop.
Open starting capacitor.
Replace starting capacitor.
Relay contacts not closing.
Check by operating manually. Replace relay if
defective.
Open circuit in start winding.
Check stator leads. If leads are all right,
replace compressor.
Stator winding grounded (normally
Check stator leads. If leads are all right
will blow fuse.)
replace compressor.
High discharge pressure.
Eliminate cause of excessive pressure. Make
sure discharge shut-off and receiver valves
are open if applicable.
Tight compressor.
Check oil level – correct binding condition, if
possible. If not, replace compressor.
Weak starting capacitor or one weak
Replace.
capacitor of a set.
COMPRESSOR STARTS –
Low line voltage.
Bring up voltage.
MOTOR WON’T GET OFF
STARTING WINDING.
Improperly wired.
Check wiring against diagram.
Defective relay.
Check operation – replace relay if defective.
Running capacitor shorted.
Check resistances. Replace capacitor if
defective.
Starting and running windings shorted.
Check capacitance – replace if defective.
Starting capacitor weak or one of a
Check capacitance. Replace if defective.
set open.
High discharge pressure.
Check discharge shutoff valves.
Check pressure.
Tight compressor.
Check oil level. Check binding. Replace
compressor if necessary.
96
TROUBLESHOOTING
Summary of Contents for BT30RF- EXPR
Page 15: ...SECTION II...
Page 26: ...ELECTRICAL BOX WIRING DIAGRAM 00 0056 00 WIRING DIAGRAM 25...
Page 27: ...ELECTRICAL BOX WIRING DIAGRAM 00 0057 00 26 WIRING DIAGRAM...
Page 28: ...ELECTRICAL BOX WIRING DIAGRAM 00 0064 00 WIRING DIAGRAM 27...
Page 49: ...INSTRUCTIONS SOLID DOOR REMOVAL INSTALLATION ADJUSTMENT 48 MAINTENANCE REPAIR...
Page 63: ...CASTER INSTALLATION INSTRUCTIONS 62 MAINTENANCE REPAIR...
Page 69: ...ELECTRICAL REFRIGERATION INFORMATION BT30RF EXPR Explosion Proof Refrigerator Freezer...
Page 79: ...ELECTRICAL REFRIGERATION INFORMATION ST260RI ST260RIR...
Page 81: ...MODULE 1 ANALOGIC PARAMETERS MODULE 1 PARAMETERS 83...
Page 83: ...MODULE 1 DAYTRONICS PARAMETERS MODULE 1 PARAMETERS 85...
Page 102: ...EVAPORATOR FAN SHROUD ASSEMBLY 104 EVAPORATOR FAN SHROUD ILLUSTRATION...
Page 105: ...EVAPORATOR FAN AREA BT30RSFMS BT50RSFMS EVAPORATOR FAN AREA ILLUSTRATION 107...
