Sub-Zero INTEGRATED Series Service Manual page 22

INTEGRA
INTEGRA
Monitor Compressor Run Duration, Displays If Service is Needed
The microprocessor observes the changing state of the compressor relays to determine the length of compressor
run time (See Figure 3-23).
40 / EC 50, respectively), and defrost is initiated, but SERVICE will not flash.
If several 100% run periods occur, and the compartment temperature does not fall to at least the set point / low off-
set temperature average (and the door is not opened during the last run period), then SERVICE will flash along with
the error code (See Figure 3-24).
NOTES:
• To clear a flashing SERVICE and EC, the problem must be corrected, then press the Bell ON/OFF key for 15
seconds. Failure to clear error codes will cause SERVICE to display constant once Diagnostic Mode is initiated.
• If the unit is ever switched OFF then back ON, the compressor will not energize for at least 3 minutes. This 3
minute minimum OFF time is used to protect the compressor and its electricals.
HIGH VOLTAGE
BLACK
J5
J7
E2 E7 E10 E6
J4
J3
J2 J1
Figure 3-23. 736TCI Signal Trace Schematic (High Voltage) of Compressor Electrical System
SERVICE
Figure 3-24. "SERVICE", "40" or "50" and "EC" Flashing = Several Excessive Compressor Run Periods
TED
TED
(736 T (736 T all SWS #2970000) all SWS #2970000)
If a compressor runs 100% (Fre = 6 hours / Ref = 4 hours), an error code is logged (EC
L1
115 VOLTS
NEUT
60 CYCLES
WHITE
GRAY
J6
PURPLE
SERIES
SERIES
WHITE
REFRIGERATOR
OVERLOAD
PROTECTOR
FREEZER
OVERLOAD
PROTECTOR
3
1
5
4
6
2
7
8
M
FREEZER
COLDER WARMER COLDER
3-15
General Information
M
RUNNING
CAPACITOR
(WHEN USED)
REFRIGERATOR
STARTING
COMPRESSOR
RELAY
M
RUNNING
CAPACITOR
FREEZER
(WHEN USED)
COMPRESSOR
STARTING RELAY
M
M
length of compressor
run time is monitored
by microprocessor.
ICE
REFRIGERATOR
WARMER
ON/OFF
#7015817 - Revision A - January, 2010
UNIT
ON/OFF
ON/OFF