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Problem Probable Cause Remedy
Machine won’t run (no lights,
not motor)
• Machine not plugged into wall receptacle
• Building circuit breaker tripped or fuse
blown
• Switches in wrong position
• Plug machine directly into outlet. Do not
use extension cord.
• Place circuit breaker in the ON
position or replace fuse
• Turn lower panel Power Switch to ON,
Control Switch to OFF and freezer switch
to ON.
Machine will not freeze • Dasher assembly not installed
• Drive belt broken or off pulley
• Inadequate airflow
• Freezer in CLEAN position
• Mix low light on indicating an out of condition
• Condenser clogged
• Compressor not operating
• Low refrigerant charge
• Improper expansion valve setting
• Defrost timer set
• Install dasher assembly
• Repair or replace
• Allow 6” (15cm) on both sides
• Switch to ON
• Correct out of condition (syrup, water,
alcohol, or CO2)
• Clean condenser
• Check for cause and correct
• Check for leaks, repair and recharge
• Adjust within specifications
• Wait for defrost cycle to end
Product too soft (thin) • Consistency adjuster too thin
• Too much alcohol
• Product BRIX level too high
• Readjust consistency firmer
• Readjust alcohol flow control
• Check water and syrup flow controls for
proper test volume
Product too thick (firm) • Consistency adjuster set too firm
• Too little alcohol
• Product BRIX level too low
• Readjust consistency setting thinner
• Increase product BRIX level and check
product feed
• Increase product BRIX level
Product will not dispense • Power switch OFF
• MIX LOW light on
• Drive belt broken or off pulley
• Turn power switch ON
• Refill empty product
• Repair or replace
Leakage from drip tube • Worn out or defective drive shaft seal • Replace seal and then lubricate at each
cleaning
Excessive Dispensing Valve
Leaks
• Worn or defective o-ring(s) • Replace and lubricate at each cleaning
Clicking sound from inside the
machine
• Low voltage
• Extension cord is used
• Use dedicated circuit with proper rating
• Connect directly to power source or use
power cord of proper size
Thumping sound from inside the
machine
• Worn belt
• Low alcohol content
• Replace belt
• Check mix
Product does not feed • Low CO2 pressure
• Product pumps defective
• Carbonator pump defective
• Transformer defective or transformer
overload tripped
• Solenoids defective
• Check bottle and regulator
• Replace pumps
• Replace pumps
• Replace transformer or reset transformer
circuit breaker
• Replace solenoids
Premature seal wear • Incorrect installation of dasher
• Improper drive shaft clearance
• Advise careful installation
• Adjust to proper clearance
Troubleshooting Guide
If machine is not operating properly, check the following list for possible solutions. Only a qualified service technician
should perform electrical and mechanical adjustments or repairs. Always disconnect power before attempting any
maintenance procedures.
If you still need help, call an authorized dealer in your area or GCS’ Technical Service Department. You can reach
Technical Service at (800) 425-4776 Monday-Friday, 8:00 AM-6:00 PM Eastern Standard Time. Please have the model and
serial number ready so that accurate information can be given.
Prior authorization must be obtained from Grindmaster Crathco Systems’ Technical Service Department for all
warranty claims.
Page 16 Crathco Beverage Freezers