Filter
Top Products
21
SUB-ZERO TROUBLESHOOTING GUIDE
TROUBLESHOOTING GUIDE
P
ROBLEM POSSIBLE CAUSE POSSIBLE SOLUTION
U
nit operates
I
ce may be stuck in the evaporator Check water supply – filter may
but no ice falling in
and the unit is ”frozen up” be restricted
storage bin
C
heck inlet water valve – inlet screen
may be restricted or valve does not
operate
H
ot gas valve may not operate –
check and repair or replace
Harvest time set too short – timer
needs adjustment (see page 19)
Too much heat load Inlet water valve leaks through,
must be replaced
No water spray Water pump does not operate, must
be replaced or check for water
leak in reservoir
No airflow Fan motor does not operate or fan
blade is broken, must be replaced
Condenser completely blocked,
must be cleaned (see page 17)
Cube size control will not close Defective control, must be replaced
Inlet water valve leaks through,
must be replaced or not enough
refrigerant, call a
Sub
-Zero
authorized service center
Compressor does not operate Start relay or capacitor must be
properly or at all replaced
Call a Sub-Zero authorized service
center
Not enough r
efrigerant
Call a
Sub
-Zero authorized service
center
Restricted system Call a Sub-Zero authorized service
center
Hot gas valve leaks through Call a Sub-Zero authorized service
center