Ice-O-Matic ICE0250 Series - Manual (Page 44)

ICE Series Troubleshooting Trees
Page C14
Machine Does Not Enter Harvest
YES
Will suction
pressure drop
below cut-in of
Timer Initiate?
Check Purge Valve
to make sure it is not
leaking, if it is
replace valve or
remove obstruction
OK
Hot Gas Valve
could be leaking
Does the
manual Purge
Switch
energize the
Purge Valve?
NO
OK
Is the freeze
pattern on the
Evaporator
even?
TXV(s) may be
stuck open, see
page E3 and E4
Timer Initiate
Control out of
adjustment or
may be
defective
YES
Check for signs of a
weak Compressor,
see page E1
High
Temperature
Safety Control
may be open,
see page F8
Check Timer
Number 2
NO
NOT OK
Make sure system is
not overcharged
Check Timer Initiate
Control for correct
cut-in pressure
Check Timer
Number 1 for proper
setting and
operation
NOT OK
OK
OK
YES
OK
Relay Number 1
or Relay Base
may be
defective
OK
Timer may be
defective
NO