TRUE ICE SERVICE MANUAL truemfg.com
TEC_TM_198 | REV. A | EN
P#857284
03/26/2024 Page 64 of 96
Troubleshooting & Diagnosis
Troubleshooting & Diagnosis
Problem Causes Possible Solutions
Long Freeze
Lack of maintenance
• Air filter Clean (or replace) condenser air filter
• Condenser coil Clean condenser coil
• Clogged water filter Replace in-line water filter
Improper installation
• Clearances Unit must be installed with proper clearances (pg. 14)
• Hot water supply Verify unit is being supplied by cold water
• Ambient temperatures
Designed ambient temperature for proper operation
are 35˚-100˚F (1.7˚-43.3C˚)
• Low supply voltage Designed voltage 104-127 VAC
Water system related
• Incoming water pressure
Verify pressures are between 20-100 psi
• Defective (leaking) inlet water valve
Replace inlet water fill valve
• Relay for water valve stuck closed (control
board issue)
Replace control board
• Water cooled; valve not adjusted correctly
Adjust water flow according to head pressure; if
stuck open, replace valve
Electrical system related
• Voltage dropping under load Verify wire size feeding the outlet
• Defective water level sensor (not reading
water levels/control board correctly
See "Water Level Sensor" (pg. 73)
• Defective compressor relay on control board Replace control board
• Defective compressor and/or start
components
Determine which has failed and replace
NOTICE ›
If a start component fails, replace all
components
• Open compressor windings Replace the compressor
• Defective water pump If water pump has voltage, replace the water pump
• Defective control board See "Transducer Diagnosis" (pg. 76)
Refrigeration system related
• Incorrect charge
• Vacuum the 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
Long Freeze/Long Harvest
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