Foster HR 410 - Troubleshooting: Compressor and Temperature Issues; Compressor Will Not Start; The Temperature Is Too Cold; The Temperature Is Not Cold Enough

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Troubleshooting
Problem
Possible Cause
Solution
Compressor will not start
No voltage in socket
Use voltmeter to check
Electrical conductor or wires may be
cut
Use ohmmeter to check for
continuity
Defective electrical component:
thermostat, relay, thermal protector
etc
Replace defective component
Compressor motor has a winding
open or shorted
Measure ohmic resistance of main
and auxiliary winding using
ohmmeter. Compare with correct
values
Compressor stuck
Change compressor
Temperature control contacts are
open
Repair or replace the contacts
Incorrect wiring
Check wiring diagram and correct
Fuse blown or circuit breaker
tripped.
Replace fuse or reset circuit breaker
Power cord unplugged
Plug in power cord.
Controller set too high
Set controller to lower temperature.
Cabinet in defrost cycle
Wait for defrost cycle to finish
The temperature is too cold
Controller is set at a very cold
position
Set to warmer position and check if
the compressor stops according to
controllers operating range.
Controller does not disconnect the
condensing unit
Check the insulation of the
thermostat. If problem persists,
change the thermostat
Control contacts are stuck closed
Change the control. Check
amperage load
Defective or incorrect temperature
control
Determine correct control and
replace.
The temperature is not cold
enough
Controller is set at a very warm
position
Adjust to colder setting
Condenser is dirty
Clean condenser
The refrigerator has been placed at
an inadequate location
The unit must not be near stoves,
walls that are exposed to the sun, or
places that lack sufficient air flow.
Compressor is inefficient or there is
a high pressure due to the air in the
system
If there is air in the system, purge
and recharge
Iced up evaporator coil
Check temperature control,
refrigerant charge, and defrost
mechanism. Remove all ice
manually and start over.
Restriction in system
Locate exact point of restriction and
correct
The refrigerator has been used
improperly
The shelves must never be covered
with any type of plastic or other
material that will block the circulation
of cold air within the refrigerator.
Too many door openings
Advise user to decrease if possible