Vendo VARI-PAK 450, Manual

Page: 110 / 113

T-10
07/2003
T-11
07/2003
Unit will not run in the
compressor relay test
mode. **NOTE: Leave
the compressor relay
test mode on, in order to
check for voltage.
Defective control board. Unplug unit at power distibution panel. Remove
air dam. Reconnect power. Enable compressor
relay through Test Mode. Check 2-pin connection
on power distribution for 110V.
Defective relay. Upon opening the cabinet door, the lights and
fans should shut off. If they don’t, replace the
cabinet switch.
Refrigeration unit runs
constantly.
Defective cabinet switch. Upon opening the door, the display should read
either errors, summary sales, or none. If it does
not, then replace the cabinet switch.
Defective control board. Replace control board.
Defective relay - contacts are
welded together.
Replace relay.
Compressor will not start. Overload protector inoperative. Check overload (apply insulated jumper across
terminal, if compressor starts, replace overload).
Defective cabinet switch. Check for error codes. Replace cabinet switch.
Compressor will not start,
condenser fan motor
running - unit hot (power
to compressor).
Defective over load relay Replace the over load relay.
Compressor motor rocked Replace the refer unit.
Defective capacitor Replace the capacitor.
Defective PTC relay Replace the PTC relay.
Compressor starts but
does not run.
Loss of refrigerant Replace the refrigeration unit.
Smashed tubings and capillary Replace the refrigeration unit.
Defective over load relay Replace the over load 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.
Defective heat exchange on
condenser/ Blocking air flow by
dust, lint or fins damage
Clean the surface of the condenser fins or
straighten the bent fins.
Both compressor and
condenser fan motors will
not operate.
Bad refrigeration control relay. Test relay using relay test function of the
electronic controller. Replace relay if necessary.
Bad connection at power board. Check wiring connections. Make corrections if
necessary.
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.