Rivacold BEST W R290 Bedienungsanleitung Seite 137

EN
8. Diagnostics
ID Description
37
Evaporation
temperature low
protection
38
High evaporation
temperature
protection
39
High condensing
temperature
protection
40
Low intake
temperature alarm
41
EEV motor error
42
Ineffective adaptive
control
43
EEV emergency
closure alarm
44
Error in the EEV
range of parameters
45
Error in the EEV
service position
percentage
136
BEST W R290
Cause
Evaporating The valve opening
temperature too intensity is
low, below threshold increased. The
PL1 for longer than further the
PL3 temperature drops
below the threshold,
the greater the valve
opening intensity
will be. The integral
time indicates the
intensity of the
action: the lower it
is, the greater the
intensity.
Evaporating Closing of the
temperature too electronic valve in a
high, above controlled manner,
threshold PM1 for which implies
longer than PM3 abandoning the
overheating
regulation, and its
increase. The
protection will
therefore have a
moderate reaction
that tends to limit
the increase in
evaporation
temperature,
keeping it below the
operating threshold,
trying to increase
the overheating as
little as possible.
Condensing Moderate closure of
temperature too the valve and
high relative increase in
overheating
Low suction Visual indication
temperature only
Faulty valve motor EEV valve regulation
or no connection interrupted
Valve tuning failed Visual indication
only
Power failure and EEV valve regulation
valve closed in interrupted
emergency due to
power supply from
an external source
(Ultracap or UPS)
Error in EEV Driver Visual indication
parameterization only
Manual forcing Interruption of
value outside the 0- manual valve
100% range forcing
Impact Resolution
Check that the
thermostatic valve
and evaporator fans
function properly.
Check for ice on the
evaporator coil.
Check parameters
PL1, PL2, PL3
Cooling demand too
high or check that
the compressor and
thermostatic valve
function properly.
Check parameters
PM1, PM2, PM3
Check that the
condenser-fan
functions
Clean the
condensing coil
Check the
connections and the
condition of the
motor. Switch the
circuit board off and
back on
Check the setting of
parameter PrE
Check the power
supply of the circuit
board
Check the
parameters of the
EEV unit
Check the value of
parameter PMu
Instruction manual v. 00 | 9600-0033
Rev.
Reset
Relay
(*)
A No
A No
A No
A No
A No
A No
A No
A No
A No
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