V21 Parts & Service Manual
All V21 Identified Equipment
REV A – 10/2013
P/N: 1230476
ERROR
PROBABLE CAUSE
CORRECTIVE ACTION
Compressor will not start,
condenser fan motor
running - unit hot (power to
compressor)
Defective overload relay
Replace the overload relay.
Compressor motor rocked
Replace the refer unit.
Defective capacitor
Replace the capacitor.
Defective PTC relay
Replace the PTC relay.
Compressor starts but
doesn’t run.
Loss of refrigerant
Replace the refrigeration unit.
Smashed tubings and capillary
Replace the refrigeration unit.
Defective overload relay
Replace the overload relay.
Compressor runs but cabinet
temperature warm.
Loss of refrigerant
Replace the refrigeration unit.
Smashed tubings
Replace the refrigeration unit.
Defective drainage
Make sure the drain hose is not kinked or
clogged.
Defective temperature sensor
Replace the temperature sensor.
Poor air flow
Make sure nothing is sitting in front of the
evaporator.
Defective control board
Replace the control board.
Defective door seal
Make sure the vend flap and gasket are
not open
or damaged.
Defective heat exchange on condenser/
Blocking air flow by dust, lint or fin damage
Clean the surface of the condenser fins or
straighten the bent fins.
Evaporator frosted over
Loss of refrigerant
Replace the refrigeration unit.
Smashed tubings
Replace the refer unit.
Defective drainage
Make sure the drain hose is not kinked or
clogged. Re-install hose correctly if kinked or
clogged.
Defective temperature sensor
Replace the temperature sensor.
Defective control board
Replace the board.
Poor sealing
Check gasket, vend flap, and permagum on the
bulkhead.
Product freezing up (too
cold)
Temperature setting too low.
Adjust set point in control board.
Defective temperature sensor
Replace the temperature sensor.
Defective control board
Replace the board.
Excessive noise
Fan blade hitting shroud or loose fitting
Replace the fan blade or re-install correctly.
Defective fan motor
Re-install or replace the motor.
Defective compressor
Replace the refrigeration unit.
Referigeration base deformed
Re-install or replace the base and plastic trim.
Drain pan over flow
Poor sealing
Make sure the vend flap closes correctly and the
gasket is sealing.
Evaporation board (wick) dirty
Clean or exchange the evaporation board.
Drain hose falls out from the stud of drain
pan.
Install hose correctly .
Defective condenser fan motor
Replace the motor.
Abnormal amount of water goes into the
pan at one time
Throw out the water and check periodically to
make sure the problem is not still occurring.
Heater
Heater will not run even at
the specific ambient
temperature
No power to refrigeration unit
Check power supply and connection. Replace if
necessary.
Defective temperature sensor
Replace temperature sensor.
Defective relay
Replace the heater relay.
Defective control board
Replace the control board
Refrigeration unit will not
run even at the specific
cabinet temperature
No power to refrigeration unit
Check power supply and connection. Replace if
necessary.
Defective temperature sensor
Replace temperature sensor.
Defective control board
Replace the control board
V21 T
roubleshooting Chameleon / Trade / HV3 | T1-10