Troubleshooting - Lincat C6R/75U User And Installation Instructions Manual

Problem
Compressor will not start
The temperature is too cold
The temperature is not cold
enough
IS517 ECN4508

Troubleshooting

Possible Cause
No voltage in socket
Electrical conductor or wires may be
cut
Defective electrical component:
controller, relay, thermal protector etc
Compressor motor has a winding
open or shorted
Compressor stuck
Temperature control contacts are
open
Incorrect wiring
Fuse blown or circuit breaker tripped.
Mains Power cable unplugged
Controller set too high
Cabinet in defrost cycle
Controller is set at a very cold
position
Controller does not disconnect the
condensing unit
Control contacts are stuck closed
Defective or incorrect temperature
controller
Controller is set at a very warm
position
Condenser is dirty
The refrigerator has been placed at
an inadequate location
Compressor is inefficient or there is a
high pressure due to the air in the
system
Iced up evaporator coil
Too many door openings
Excessive heat load placed in cabinet
Excessive heat load placed in cabinet
The refrigerator has been
overcharged with the refrigerant gas
Page 16
Solution
Use voltmeter to check
Use ohmmeter to check for continuity
Replace defective component
Measure ohmic resistance of main
and auxiliary winding using
ohmmeter. Compare with correct
values
Change compressor
Change compressor
Replace the controller
Check wiring diagram and correct
Replace fuse or reset circuit breaker
Plug in main power cable
Set controller to lower temperature.
Wait for defrost cycle to finish
Set to factory parameter and check if
the compressor stops according to
controllers operating range.
Check the insulation of the controller
and probe(s). If problem persists,
change the controller and probe
Change the control. Check amperage
load
Determine correct controller and
replace.
Set to factory parameter and check if
the compressor stops according to
controllers operating range
Clean condenser
The unit must not be near stoves,
walls that are exposed to the sun, or
places that lack sufficient air flow.
If there is air in the system, purge and
recharge
Check temperature control,
refrigerant charge, and defrost
mechanism. Remove all ice manually
and start over.
Advise user to decrease if possible
Advise user not to put in products that
are too hot.
Advise user not to put in products that
are too hot.
Check to see if condensation or ice
crystals have formed on the suction
line. If so, charge with the correct
amount of gas.