Rivacold BEST W R290 Notice D'instructions page 136

ID Description
30
Circuit 2 condensing
pressure probe
alarm
31
Circuit 3 Suction
pressure probe
alarm
32
Circuit 3 condensing
pressure probe
alarm
33 Compressor 3 alarm Compressor 3 alarm
34
Defrost not
performed alarm
35
Blackout alarm
36
Low overheating
protection
Instruction manual v. 00 | 9600-0033
Rev.
BEST W R290
Cause
Value measured Visual indication
outside the only
operating ranges
Faulty or
disconnected
sensor
Value measured If the leak function
outside the is active, it causes
operating ranges circuit 3 to stop,
otherwise only a
Faulty or
visual indication is
disconnected
given
sensor
Value measured Visual indication
outside the only
operating ranges
Faulty or
disconnected
sensor
Circuit 3 block
triggered, possible
causes:
circuit breaker or
dedicated thermal
protector tripped
Compressor
overheating or short
circuit
Evaporator Defrost not
temperature higher performed, visual
than the defrost end indication for 5
value seconds and unit
proceeds with its
standard operating
cycle
Power failure for Visual indication, if
more than 1 minute blackout lasts
longer than
parameter tbO
forced defrost
starts
Overheating too low, The valve closing
below threshold P7 intensity is
for longer than P9 increased: the more
the overheating
drops below the
threshold, the
greater the valve
closing intensity will
be. The LowSH
threshold must be
less than or equal to
the overheating
setpoint. The low
overheating integral
time indicates the
intensity of the
reaction: the lower it
is, the greater the
intensity of the
reaction.
© 2020 RIVACOLD srl
|
Impact Resolution
Check wiring and
integrity of the
probe and replace it
if necessary
Check wiring and
integrity of the
probe and replace it
if necessary
Check wiring and
integrity of the
probe and replace it
if necessary
Check the condition
of compressor 3
Check parameter
dT1 or dT2
Check power source
or electrical
connections
Check that the
compressor, the
thermostatic valve
and the low
pressure and
suction temperature
transducers
function properly.
Check parameters
P7, P8, P9.
EN
8. Diagnostics
Reset
Relay
(*)
A No
A No
A No
A Yes
A No
M No
A No
135