![background image](http://html1.mh-extra.com/html/thermo-king/088669/088669_manual_1104404122.webp)
Electric Standby (Optional) Diagnosis (Rev. 04/03)
108
Contact chatter
Low battery voltage
Check voltage condition. Check
momentary voltage dip during
starting—low voltage prevents
magnet sealing
Defective or incorrect coil
Replace coil
Poor contact in control circuit
Check auxiliary switch contacts and
overload relay contacts. Check for
loose connections in control circuits
Contact welding or freezing
Abnormal in-rush of current
Check or grounds, shorts or
excessive motor load current
Low voltage
Correct voltage condition. Check
momentary voltage dip during
starting
Foreign matter prevents contacts
from closing
Clean contacts
Rapid cycling
Check for cause of short cycling
(such as thermostat)
Short circuit
Correct fault
Electric heaters do not heat—
(optional) indicator lights come
on
Defective heater contactor
Replace contactor
HC wire open
Locate open and repair
Battery is not recharging
Loose connections in electrical
system
Check all electrical connections and
charging system
Worn brushes in alternator
Replace brushes
Voltage regulator faulty
Repair or repalce regulator
Battery defective
Replace battery
Alternator defective
Repair or replace alternator
Loose belt
Tighten belt
Dirty battery terminals
Clean and retighten
Alternator relay defective
Replace relay
Fuse F309 open
Replace fuse
CONDITION
POSSIBLE CAUSE
REMEDY
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...