Rivacold BEST W R290 Notice D'instructions page 132

The suction pipe and the compressor are frosted
Cause
There is a liquid return and the
evaporator fans are NOT
working
Liquid return
8.2 Errors indicated by the controller
8.2.1 Skills
Manufacturer's personnel
COMPANY
Electrical maintenance engineer
8.2.2 Errors
ID Description
Err HMI communication
error
0 Retain memory
writing number
error
1 Retain memory
writing error
2 Coldroom
temperature probe
alarm
Instruction manual v. 00 | 9600-0033
Rev.
BEST W R290
If there is NO controller consent, check the evaporator fan
l
parameters and, if necessary, load the default setting.
If there is controller consent, then, check the wiring of the
l
fans and the relay on the circuit board together with its
activation state.
If the relay is NOT active, replace the circuit board
l
Check the overheating value in the evaporator inside the
coldroom. If the value is less than 2K, then the thermostatic
valve does NOT work and is blocked in the open position and,
therefore, must be replaced.
Cause
Connection error User interface not
between the circuit usable
board and HMI
Fault in the memory Machine stop due to
of the electronic circuit board fault
control
Fault in the memory Machine stop due to
of the electronic circuit board fault
control
Value measured Visual indication
outside the only
operating ranges
Faulty or
disconnected
sensor
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|
Solution
Impact Resolution
Check the electrical
connections or
replace the
interface, if
necessary
Replace the circuit
board
Replace the circuit
board
Check wiring and
integrity of the
probe and replace it
if necessary
EN
8. Diagnostics
Personnel
Reset
Relay
(*)
A No
M No
M No
A No
131