Sub-Zero 400 Series Service & Parts Manual

TROUBLESHOOTING GUIDE
5-10
700TC/I AIR SEALS
If Refrigerator Section Is Too Warm
• Make sure upper air duct is positioned in slot
of transition duct. If not, reposition upper air
duct (see #1, Figure 5-1).
• Check that all foam blocks are in position at
top of transition duct, and are making a good
seal against upper air duct (see #2, Figure 5-
1). Reposition foam blocks as required, or
order Foam Tape (3/4” x 1/8”), part no.
6230730, and apply to top of blocks.
• Make sure return air duct is not blocked by
ice or frost (#3). Replace if defective with
part no. 3013550.
• Check that right rear sump baffle is posi-
tioned tightly against back of sump (#4).
Reposition baffle assembly if required and/or
apply a bead of silicone sealant where baffle
meets back of sump.
• Make sure evaporator fan assembly is cor-
rectly positioned with no play front to back
(#5). Reposition if required.
• Check baffle operation by clenching refriger-
ator thermistor firmly in one hand to warm it.
The baffle should open after 1-2 minutes.
If Refrigerator Section Is Too Cold
• Check that all foam blocks are in position at
top of transition duct, and are making a good
seal against upper air duct (see #2, Figure 5-
1). Reposition foam blocks as required, or
order Foam Tape (3/4” x 1/8”), part no.
6230730, and apply to top of blocks.
• Make sure the lower air duct is firmly against
back wall and vertical duct dividers (#6). If
not, tighten lower duct mounting screw
and/or reposition vertical duct dividers and/or
order Foam Tape (3/4” x 1/8”), part no.
6230730, and apply to top of vertical duct
dividers and along side of flange of lower air
duct.
Figure 5-1. 700TC/I Air Seals
• Check that the baffle mount assembly is posi-
tioned firmly against bottom flange of air duct
and foam block inside left corner of air duct. If
necessary, reposition baffle mount assembly
and/or order Foam Tape (3/4” x 1/8”), part no.
6230730, and apply to top of baffle mount
assembly.
• Check baffle operation by placing refrigerator
thermistor in a glass of ice water. The baffle
should close after 1-2 minutes.
Upper Air Duct
Thermistor
Return Air Duct
Lower Air Duct
Transition
Duct
Foam
Block
Baffle
Mount
Assy.
Vertical
Duct
Dividers

Sub-Zero 400 Series Specifications

General

Brand	Sub-Zero
Model	400 Series
Category	Refrigerator
Language	English