Instruction for installation,
maintenance technician
and final user.
VENDING MACHINE
Rev. 00
Models: VDI 100 – 189 – 217 - 254
Pag. 42 di 46
PROBLEM
POSSIBLE CAUSES
RECOMMENDED SOLUTIONS
condenser fan works,
the compressor is
cold.
The relay board is faulty.
Check that the compressor windings have the right
electrical resistance.
Check that the guide relay has control wiring.
The condenser fan does not
work.
Check the circuit. Replace the motor.
Check if the fan is blocked.
Check the guide relay board.
The condenser is dirty.
Check if the condenser fins are dirty or obstructed.
The evaporator fan does not
work.
Check the circuit. Replace the motor and check
that the fan is not blocked.
Check the guide relay board.
No gas in system.
Check for any leaks and only reload with the
quantity and type of gas recommended by the
manufacturer.
The temperature setting is not
exact.
Set the desired temperature (ref. Programming
Manual).
The compressor
works, but the
temperature is not
ideal.
EMS programmed badly.
Check if the energy saving program is correct and
change if necessary (ref. Programming Manual).
Faulty relay board.
Check the relay board and wiring.
Incorrect temperature setting.
Check the setting.
The
compressor
works continuously.
Gas leak.
Reload the cooling system after repairing the leak.
Evaporator fan does not work.
Check the evaporator fan (see previous
instructions).
Evaporator covered in
ice.
The cooling compartment is badly
sealed.
Change the sealing and/or adjust the internal door
closure.
Check that the product door is not blocked.
