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107
Electric Standby (Optional) Diagnosis
CONDITION
POSSIBLE CAUSE
REMEDY
Unit switch ON—indicator lights
do not come on
Battery discharged
Charge or replace battery
Circuit breaker open
Reset alarm code
Electric motor reset switch tripping
Check for short circuit in unit wiring
(high voltage)
Fuse link blown
Replace fuse link
Dirty battery terminals
Clean and retighten terminals
Unit switch ON—indicator lights
come on but electric motor does
not run
No standby power
Provide power to unit; check power
at:
1. Power source
2. Power plug
3. Motor contactor hot side
4. Motor contactor load side
(contactor closed)
5. Overload relay
6. Motor terminals
Defective motor contactor
Repair or replace motor contactor
Defective low oil pressure sensor
Replace low oil pressure sensor
Overload relay tripping
Check for shorted motor windings or
wires
Defective motor
Replace motor
Batteries discharged
Charge ore replace batteries
Electric motor hums but does not
run
Locked rotor (overload relay will
open after a period of time)
Remove interference
Locked compressor
Repair compressor
Defective clutch on engine (locked
up)
Repair or replace clutch
Low line voltage or no voltage on
one leg
Bring voltage up to within 10% of
motor rating
Summary of Contents for 088669
Page 4: ......
Page 8: ......
Page 12: ...Safety Precautions Rev 04 03 iv PUB126...
Page 13: ...Safety Precautions Rev 04 03 v aea105...
Page 14: ......
Page 28: ...Unit Description Rev 04 03 14 Rear View Curbside RD II SR Evaporator aea105...
Page 32: ...Unit Description Rev 04 03 18 Power Receptacle Box RD II SR 50 aea102...
Page 76: ...Refrigeration Maintenance Rev 04 03 62...
Page 77: ...Refrigeration Maintenance Rev 04 03 63...
Page 81: ...Refrigeration Maintenance Rev 04 03 67...
Page 103: ...89 Hilliard Clutch Maintenance Clutch Assembly...
Page 106: ...Hilliard Clutch Maintenance Rev 04 03 92 12 Install retaining ring Clutch Torque Values...
Page 125: ...111 Cool Cycle RD II SR with TherMax Heating...
Page 126: ...112 Condenser Cycle RD II SR with TherMax Heating...
Page 127: ...113 Heat and Defrost Cycle RD II SR with TherMax Heating...
Page 129: ...115...
Page 130: ...116...
Page 131: ...117...
Page 132: ...118...
Page 133: ...119...
Page 134: ...120...
Page 135: ...121...
Page 136: ...122...