must for patching measures or call for professionals.
7.4 Ensure the smoothness of drainpipes.
7.5 Frequently observe the operation of the product. In case of any abnormal noise, smell or
smog, cut off the power supply immediately and call for professionals for help. Do not restart the
product before trouble is cleared.
7.6 We will not be responsible for any accident incurred by failures of following the notices.
8. Frequent troubleshooting
Number
Troubles
Causes
Solutions
1
Strange noise under the
bottom shelf
Fan blade broken.
Power off and fix the blade.
2
Non-refrigerating in spite
of normal operation
1. Unit off.
2. Melting process.
3. Refrigerant leaking
4. Unit failure.
1. Power on.
2. Stop melting.
3. Patch the leak and refill
refrigerant.
4. Call for professionals.
3
Weak air from air curtain,
and
higher
cabinet
temperature
1. Evaporator blocked by frost.
2. Inside fan damaged.
3.Too
low
set
point
of
temperature controller.
4.Vent blocked by storage
1. Increase melting frequency.
2. Replace the fan.
3. Adjust the set point.
4. Remove the storage.
4
Normal air curtain, but
higher
cabinet
temperature
1. Insufficient refrigerant.
2.Too
high
set
point
of
temperature controllers.
3.Expansion value fails.
4.Thewind curtain disturbed by
strong air flow.
5. Ambient temperature or
humidity beyond standards.
1.Refill the refrigerant.
2.Adjust the set point for the
temperature controller.
3.Repair or replace the expansion
valve.
4. Removing the disturbing
factors.
5. Improve the conditions.
5
Melting water overflown
1.Heating pipe for melting water
damaged
2. Water-level controller failure.
3. Ambient temperature or
humidity beyond standards.
1. Replace the heating pipe.
2.Replace
the
water-level
controller.
3. Impove the conditions.
6
Normal air curtain, but
periodical fluctuation of
cabinet temperature
1.Condenser contaminated.
2. Poor venting of the unit.
3.Heatprotection of compressor
failure.
4.Expansion valve blocked by ice
5. Expansion valve failure.
6.
Temperature
controller
failure.
1. Clean the condenser.
2.
Improve
the
venting
conditions.
3. Replace the heat protection.
4. Replace the drying filter.
5. Replace the expansion valve.
6. Replace the temperature
controller.
