Troubleshooting Guides
600 Series
(Prior to #1810000)
8-4
#3756270 - Revision B - January, 2006
(Continued - see Pointers on previ-
ous page)
A. W
arm Freezer Temperatures
w/ “VACUUM CONDENSER”
flashing
Evaporator heavily frosted
(NOTE: To manually initiate defrost, press
and hold the ICE key for approximately ten
seconds)
a. Evaporator fan malfunction
b. Defrost heater disconnected or faulty
c. Defrost terminator disconnected or
faulty.
d. Defrost sense line disconnected.
e. No power from control board
Power To Compressor fault
a. Compressor wiring disconnected
b. Compressor electricals disconnected
or faulty
c. No power from control board
• Sealed System Leak
• Sealed System Restriction
• Inefficient Compressor
a. See Evaporator Fan Fault above.
b. Check electrical connections for 20 Ohms,
reconnect or replace if defective.
c. Check electrical connections, reconnect/repair
or replace if defective.
d. Check DEF SEN electrical connection at con-
trol board for 115V. Repair connection.
e. Check DEF HTR terminal at control board for
115V. Replace board if defective.
a. Check wiring at compressor, reconnect or
repair.
b. Check compressor electricals. Replace if
defective.
c. Check F COMP terminal on control board for
115V. If no power, replace board.
Problem Possible Cause Test/Action
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