Manual
EVO controller
15
www.jakkagroup.com
It is present only if the fan speed control is configured with an
external 0-10V analog signal (Installer menu)
Ext.signal
ko
The external signal source works properly
External signal not present (voltage at the clamps = 0V):
1) check electrical connections of the external source (see electric diagram);
2) if the problem is not solved, check whether the external signal is present
(tester) and its value is greater than 0V;
3) if the problem is not solved, replace the electronic card..
ok
FlowSupply
ko
It is present only if the machine is in the constant flow version with control on
both flows
The supply pressure sensor works properly
Possible anomaly in the supply pressure sensor
ok
It is present only if the machine is in the constant flow version with control on
both flows
FlowExhaust
ko
The return pressure sensor works properly
Possible anomaly in the return pressure sensor
ok
Flow
ko
Possible anomaly in the pressure sensor
ok
It is present only if the machine is in the constant flow version with control on
one flow
The pressure sensor works properly
DpSupply
ko
It is present only if the machine is in the constant pressure version with control
on both flows
The supply pressure sensor works properly
Possible anomaly in the supply pressure sensor
ok
DpExhaust
ko
Possible anomaly in the return pressure sensor
ok
It is present only if the machine is in the constant flow version with control on
both flows
The return pressure sensor works properly
Dp
ko
Possible anomaly of the pressure sensor
ok
It is present only if the machine is in the constant pressure version with control
on one flow
The pressure sensor works properly
It is present only if the fan speed automatic control alarm is configured with a
CO
2
o CO
2
-VOC sensor (Installer menu) or it is present an excess of CO
2
in
the environment
Autominutes
ko
Possible anomaly in the sensor
ok
The sensor works properly
It is active if the unit can’t exit from anti-frost modality after then two minutes
are elapsed.
Anti-frost
ko
ok
The unit works properly
It is present only if a digital input is configures ad Min speed (Factory)
DI open, unit works normally.
DI closed, unit works at min speed.
It is on when the control is configured to manage a dehumidification system
Air temperature sensor after the cool water coil is working properly
Problem with the input air temperature sensor:
1) check electrical connections of the temperature probe (see wiring diagram);
2) if the problem is not solved, replace the temperature probe
3) if the problem is not solved, replace the electronic card.
Td(Dehumid.)
ko
Min speed
ok
ko
ok
Two minutes are elapsed from anti-frost heat exchanger modality and expel-
led temperature does not rise up to 3 C°. For speed management the control
stops fan supply and set to max speed fan exhaust .For heat stops fan supply
,fan exhaust runs at speed set in control panel. For by-pass stop fan exhaust
and leave by-pass in its modulated position.
