TD 18438
NO ICE BEING FORMED ON EVAPORATOR.
1. No water in reservoir – clean or replace float.
2. Pump not running – check sensor & board.
3. Dump solenoid – open during freeze cycle.
4. Refrigeration problems – check for leaks.
1. Dirty Condenser.
2. Hot Gas valve open.
3. Weak compressor.
ICE DOES NOT DROP AFTER 4 1/2 MIN-
UTES IN DEFROST CYCLE.
1. Is Hot Gas valve opening?
2. Is the evaporator free of scale & deposits or loosing
its plating?
3. Are the dividers bent, warped, or separated from
evaporator back.?
4. Is CPR valve set at 50 PSI in defrost?
5. Head pressure dropping too low?
6. Is bridge thickness 1/8” minimum?
ICE FORMS ON BOTTOM HALF OF EVAP-
ORATOR.
1. Is reservoir overflowing?
2. Is dump solenoid open?
3. Is unit low on refrigerant?
4. Is Hot Gas valve open during freeze cycle?
5. TXV feeding properly?
LOW HEAD PRESSURE.
1. Is there the proper charge in unit?
2. Is there a leak in the system?
3. Are ambient conditions to cold? (below
50° F).
4. On water cooled units is the water valve set proper-
ly?
5. Is incoming water to condenser, too cold (below
45°F).
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