Motak PKM0335, Installation And User Manual, Page: 44 / 137

44 Part Number: 000016426 Rev 00 08/2020
Before Calling For Service Section 4
Problem Possible Cause To Correct
Ice machine does not cycle
into harvest mode.
The six-minute freeze time
lock-in has not expired yet.
Wait for freeze lock-in to
expire.
Ice thickness float switch or
ice thickness probe is dirty.
Descale and sanitize the ice
machine.
Ice thickness float switch
wire or ice thickness probe
wire is disconnected.
Connect the wire.
Ice thickness float switch or
ice thickness probe is out of
adjustment.
Adjust the ice thickness float
switch.
Uneven ice fill (thin at top of
evaporator).
See “Ice Thickness Check”.
Ice quality is poor
(soft or not clear).
Poor incoming water quality. Contact a qualified service
company to test the quality
of the incoming water and
make appropriate filter
recommendations.
Water filtration is poor. Replace the filter.
Ice machine is dirty. Descale and sanitize the ice
machine.
Water softener is working
improperly (if applicable).
Repair the water softener.
Ice machine produces
shallow or incomplete
cubes, or the ice fill
pattern on the evaporator
is incomplete.
PKM0335/PKM0425/
PKM0535: Ice thickness float
is out of adjustment.
PKU0155: Ice thickness probe
is out of adjustment.
Adjust the ice thickness float
or ice thickness probe.
Water trough level is too high
or too low.
Check the water level and
adjust as required.
Water filtration is poor. Replace the filter.
Hot incoming water. Connect the ice machine to a
cold water supply.
Incorrect incoming water
pressure.
Water pressure must
be 20 - 80 psi (137.9 -
551.5 kPa).
Ice machine is not level. Level the ice machine.