62-69137-00
11
A09
Defrost valve (HGV) short circuit
A10
Liquid injection valve (INV) short circuit
A11
Main hot gas valve (MHV) short circuit
A21
Clutch short circuit
A22
Condenser fan open circuit
A23
Evaporator fan open circuit
A24
Defrost valve (HGV) open circuit
A25
Liquid injection valve (INV) open circuit
A26
Main hot gas valve (MHV) open circuit
E2P
Wrong read/write data from EEPROM
Setpoint adjusted out of range -29°C /+30°C
Lose of set parameters
b. Direct display
Note
Direct display malfunction messages are displayed instead of temperature read-out as soon as the malfunction is
detected, and remain displayed as long as malfunction persists.
The unit does not run until the malfunction has disappeared or been corrected.
Code
Description
Unit
shutdown
Checking
Mode
EE
Evaporator temperature probe
(open/short circuit)
Yes
－
Evaporator probe
and connections
280/350/400/500/700
EEE
Defrost terminal temperature probe
(open/shot circuit)
No
-Defrost probe and
connections
280/350/400
bAt
Battery low voltage alarm
YES
－
Battery voltage
－
Alternator
connections
280/350//500/700
con
Communication malfunction
No
- Communication line
280/350/400/500/700
Err
Programming mistake of the maximum
setpoint by user
Setpoint lower than minimum setpoint
but in the range -29°C /+30°C
No
－
Setpoint
280/350/400/500/700
6.2 SMART Operation principle
For its small volume, we can install the SMART
display board anywhere of the cab cage.
After starting up, the refrigeration unit by pressing the
key, unit start-up and shut-down are
automatic.
An open-type compressor is driven by the engine of
the vehicle. The vehicle battery (alternator) powers the
evaporator and condenser fans. The unit automatically
shuts down when the engine is switched off with the
ignition key.
The unit can be completely shut down manually by
pressing the
key on the cab command.
Temperature control
As soon as the set-point temperature has been reached,
temperature control is obtained by shut down and
start-up of the electro-magnetic clutch.
Condenser fan is controlled by the microprocessor and
evaporator fan(s) cut out during regulation. When
transporting fragile loads such as fresh meat,
vegetables and cheese, it is possible to program the
microprocessor to obtain continuous ventilation by the
evaporator during regulation.
Defrost
－
Frozen unit only
