True Ice Series User Manual

TRUE ICE SERVICE MANUAL
TEC_TM_198 | REV. A | EN 03/26/2024 Page 65 of 96
truemfg.com
Troubleshooting & Diagnosis (cont.)
Problem Causes Possible Solutions
Long Freeze (cont.)
Refrigeration system related (cont.)
• Flooding/starving TXV Check TXV bulb clamp/replace TXV
• Leaking harvest valve Replace harvest valve
• Compressor (weak valves) Replace compressor
• Restriction Replace restricted item
Long Harvest
Lack of maintenance
• Dirty evaporator/nickel plating
Descale and sanitize per instructions (pg. 51); if nickel
plating is missing, replace the evaporator
• Faulty evaporator (missing partitions) Replace evaporator
• Excessive scale deposits Descale and sanitize per instructions (pg. 51)
• Silicone surrounding evaporator plate not
sealing (should be sealed all the way around
the evaporator)
Reapply silicone
NOTICE ›
Surface must be dry and clean. Fill any
voids surrounding the evaporator with 100% silicone.
Silicone should be cured before starting the unit.
Improper Installation
• Not level Level the unit by adjusting bin/dispenser legs
• Low ambient temperature
(below 35˚F (1.7˚C))
Move the unit or increase the ambient temperature
Electrical system related
• Faulty harvest valve (not opening all
the way)
Verify HGV coil voltage is correct
• Open harvest valve coil Replace HGV coil
• Harvest valve relay (on control board)
not closing
Replace control board
• Proximity switch (bin switch) stuck closed Replace proximity switch (bin switch)
• Condenser fan(s) should not run
during defrost)
Check wiring. If wired incorrectly, correct wiring per
wiring diagram; If control board sends voltage to
condenser fans during harvest, replace the control
board
Refrigeration system related
NOTICE ›
If the compressor discharge line temperature (measured 6" (153 mm) from the
compressor) falls below 140˚F (60˚C) when harvest initiates, the unit will not have the designed
temperature required for harvest
• Low Charge Check refrigeration system for leaks
• Incorrect charge
Vacuum refrigeration system and weigh in the
correct charge
• Incorrect refrigerant Verify only R-290 refrigerant is being used
• Non-condensables in the system Replace the drier and pull 500 mic vacuum
• Flooding/starving TXV Check TXV bulb clamp/replace TXV

True Ice Series Specifications

General

Brand	True
Model	Ice Series
Category	Commercial Food Equipment
Language	English