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MFI Series Service Diagnosis
Page 22
Symptom Possible Cause Probable Correction
Unit makes ice, but very slowly •High discharge pressure because •Clean filter and condenser.
of a dirty condenser.
•Low capacity because the auger and •Clean the water system.
evaporator are coated with mineral
scale.
•Low suction pressure due to low •Locate leak. Recover the
refrigerant charge. refrigerant, repair leak, replace
drier, evacuate and weigh
in the nameplate charge.
Water leak. •Drain plugged up. •Clean out drain.
•Tubing cracked •Replace tubing.
•Condensation on drain tubing. •Insulate tubing.
•Water hose off •Reattach hose.
•Reservoir cover off. •Return cover to reservoir.
•Reservoir cracked. •Replace reservoir.
•Evaporator water seal leaks. •Check base of evaporator and
drip pan. If the seal leaks, shut
off the water, remove the auger
and replace the water seal.
Check the gear motor for
water infiltration.
Excessive water use. •Water cooled model, water regulating •Adjust to 245 PSIG discharge
valve not adjusted properly. pressure.
•Reservoir float valve leaks thru. •Replace float valve or seat.
•Water cooled model, overcharged •Recover and weigh refrigerant.
with refrigerant. Weigh in correct charge.
•Water cooled model, condenser coated •Acid clean the water cooled
with minerals. condenser.
Excessive ice meltage. •Bin drain clogged •Clean out bin drain.
•Improper installation of drains, they are •Drains must be separate.
connected.
•Poor fit between bin door and door frame. •Adjust or replace.
Machine makes too much noise. •Evaporator coated internally with minerals. •Clean with ice machine
cleaner.
•Motor bearing dry. •Oil or replace motor.