Sub-Zero 400 Series Service & Parts Manual

COMPONENT INFORMATION
2-18
Evaporator Sump Drain Tube Heater
To access the drain tube heater, the unit tray
assembly must be slid out. The drain tube heater
is located in the unit tray area at the bottom of the
evaporator sump (Figure 2-29). To remove the
drain tube heater, pull it out of the sump drain
tube, then disconnect the electrical connection
located at the upper rear of the unit compartment.
NOTE: When replacing the drain tube heater, it is
necessary to feed the heater in through the drain
tube, under the evaporator, approximately seven
inches.
12-Volt Transformer
To access the transformer, slide the unit tray
assembly out, then locate the transformer at the
upper right side behind the water valve (if applica-
ble). To remove the transformer, first remove two
nuts, one in front and one in back of the trans-
former (Figure 2-29), then disconnect the electrical
connection.

Sub-Zero 400 Series Specifications

General

Brand	Sub-Zero
Model	400 Series
Category	Refrigerator
Language	English