“HA”
maximum
temperature
alarm
blinking or
beeping
a.
Ambient temperature
too high
b.
Improper cabinet seals
c.
Iced evaporator
d.
Low voltage
e.
Operating 60 Hz unit at
50Hz
f.
Sealed system problem
g.
Undercharge or
overcharge
a.
Check for installation location
b.
Check for gasket and door opening
c.
Defrost and reset temperature
d.
Check power supply
e.
Use proper 60 Hz
f.
Call service for checking loss of
refrigerant or restrictions
g.
Call service to add or remove
refrigerant
Compressor
stopping
and starting
but short
running time
a.
Incorrect temperature
setting
b.
Incorrect voltage
c.
Failed thermistor
d.
Failed components
e.
Overcharge of
refrigerant
f.
Discharge or suction
pressure too high
a.
Set 55 to 60
°
F
b.
Check for voltage
c.
Check thermistor by placing it in ice
water and measuring resistance
d.
Check compressor windings, start
relay and overload protector.
e.
Call service for removing refrigerant
f.
Call service for OEM information
Compressor
running but
not cooling
a.
Refrigerant leakage
b.
Refrigeration system
restriction
a.
Check for loss of refrigerant
b.
Call service for checking restrictions
House
circuit
tripping
a.
Incorrect fuse or
breaker
b.
Incorrect wirings
c.
Failed components
a.
Check for proper fuse or breaker
b.
Check for wirings and connections
c.
Call service
Noisy
operation
a.
Mounting area not firm
b.
Loose parts
c.
Compressor
overloaded due to high
ambient temperature
and ventilation
d.
Malfunctioning
components
a.
Add support to improve installation
b.
Check cabinet washers, tubing
contact and loose screws.
c.
Check for ambient temperature and
ventilation
d.
Call service for checking Internal
loose, inadequate lubrication and
incorrect wirings
Dispensing System
Complaint Possible
Causes
Response
Unit not
dispensing
a.
Power cord unplugged
b.
No power to unit
c.
Low voltage.
d.
Incorrect or loose wirings.
e.
Nitrogen empty
f.
Nitrogen tubing blockage
g.
Defective solenoid valve
h.
Defective stopper-
dispenser
a.
Check for power cord plug
b.
Check power at receptacle &
fuses
c.
Contact an authorized electrician
d.
Check all wirings and connections
e.
Check for nitrogen cylinder
f.
Check for kinked tubes
g.
Check for solenoid valve
h.
Check for stopper-dispenser
Dispensing is
interrupted
a.
Blockage of solenoid valve
b.
Leakage of seal
c.
Kinked tubes
a.
Clean solenoid valves
b.
Check for stopper-dispenser
c.
Check for kinked tubes
Unit dripping
a.
Leakage of solenoid valve
a.
Check for solenoid valves
14
W W W . V I N O T E M P . C O M
