RIVC000001 Pag. 17 REV. 00 11/10/10
UK
Code
displayed
Description Notes
OFF unit in stand-by (operation disabled) remains until the next ON command
dF defrosting in progress see par. “ddL”
dFu defrosting not performed displayed for 2 seconds when the defrosting
command is not performed because the evaporator
temperature is already above the defrosting end
temperature (parameter dst)
uM master unit
uSx slave x unit
at switch on, the network configuration of the unit is
displayed
Cn terminal/control connection interrupted the terminal is not receiving data from the control
If the terminal
/control connection does not operate correctly at switch on, the terminal display will read “88,8” and
the LEDs will all be switched off.
9.
EMERGENCY SYSTEM
PLEASE NOTE:
A specialist technical engineer must only perform the operations described here below.
If the electronic control unit breaks down or presents operating anomalies and it
is impossible to replace
it immediately, there is a
n EMERGENCY SYSTEM that can be used to maintain the unit in operation until
it can be re
placed.
To use this system, proce
ed
as follows:
1. Cut off power to the Blocksystem
2. Remove
all jumpers between the L terminals and the common contacts of the card relays (terminals
25-28-33-36
-38)
3. As shown in the d
iagram, connect a thermostat between the L terminal, the NO terminals (ter
minals
32,
37) and the NC terminal (terminal 34) of the compressor, defrosting and fan relays (COMP,
DEF
and FAN)
4. Fit a jumper between the L terminal and the NO
terminal of the ON/OFF relay (terminal 26
supplying power to the crankcase heaters, door and waste, wher
e fitted).
5. Connect the Blocksystem back to th
e mains power, setting the thermost
at to the required
temperature.
6. PLEASE
NOTE: This connection can only be used momentarily. Contact your dealer as soon as
possible to replace the malfunctioning card.
7. PLEASE NOTE: Defrosting will be cut out for the entire emergency phase and for this reason, we
recommend that cold room door opening be kept to a minimum.
8. When fitting the new control unit, restore all of the connections described in points 2,3,4 and 5.
Key:
T = Thermostat
T
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