aldes EasyVEC 4000 Manuel d'instructions d'installation - Page 14

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If you cannot manage to eliminate the fault yourself using the following table:

- Microwatt and Microwatt+ version Reset the remote control to its factory settings, see instructions remote control 11025983

- Turn off the power. Wait until the screens are unlit. Turn on the power.

- If the problem persists, read the product rating plate and contact our after-sales service.

Problem

Microwatt and Microwatt+

version

PCB power fault

The remote control screen

does not light up

Microwatt and Microwatt+

version

A fault is displayed on the

remote control

The circuit breaker on the switchboard detects an overload and

cuts the circuit.

The motor does not

Or power fault.

start and the frequency

controller screen is unlit.

Controller inoperative

The controller is faulty and displays a fault code

The controller does not receive the order to start the motor

The motor does not

start and the frequency

controller screen is lit.

Motor wiring fault

Motor is inoperative

The fan unit will not start or starts then stops

The fan impeller rotates in the wrong direction

The fan does not run

normally

The fan does not work at the specified operating set point

Controller fault codes

- Analyse the fault code displayed on the controller and correct the problem :

- Reset the faults by pressing its STOP/RESET button.

- Cut the power supply

Controller fault code

Over-current

ocA, ocd, ocn

Over-voltage

OvA, Ovd, Ovn, Ovs

Under-voltage

LvA, Lvd, Lvn, Lvs

oH1

Controller over-heating

Overload (too much motor current)

oL1, oL2, EoL1, EoL2

Gff

Earthing (controller output)

PHL

Loss of phase (controller input)

orP

oPHL

Loss of phase (controller output)

oPL1, oPL2, oPL3

Possible cause

Description

• Check all wiring.

• Check the fuse on PCB

• See instructions 11025983 (remote control)

• Check the size of the circuit breaker.

• Check the system voltage and the controller wiring (inside and outside the unit)

• Identify and correct the fault that caused the controller to fail

• Change the controller

• See below: §Controller fault codes

• Check the controller output voltage.

• The order to start is given by the controller terminal block (the RUN button is disabled).

- Check the position of switches above the controller terminal block: NPN (and AVI depending

on version)

- Check the wiring between PCB and controller (depending on version)

• Check the wiring between the controller and the motor terminal box

• Identify and correct the fault that caused the motor to fail

• Change the motor

• Check all wiring

• Check the motor: connect to a 400 V AC power supply

• Replace the defective part

• Check the direction of rotation of the fan motor.

• Check the motor wiring: swap two phase wires (on versions with 3-phase AC motor and

power supply) on the motor wiring to make it rotate in the correct direction:

((see sticker on the impeller for verification))

• Check that the impeller is not sticking

• Check that the pressure set point is correctly defined (see page 10 or remote control

instructions, depending on the version)

• Check the pressure sensor: compare the set point defined with a pressure measurement

made separately inside the casing and upstream of the impeller

• Check the pressure tap tube between the pressure sensor (outlet P2, depending on the

version) and inside the casing. Unblock it

• Check the motor

• The controller is under-dimensioned. Check the air ductwork for leaks or abnormal

pressure losses

- Wait until all the screens go blank

- Turn the power back on

• Check the current absorbed by the motor.

• Check the motor cable and insulation (short-circuit or earthing).

• Check the system voltage.

• Check the motor load (friction, etc.)

• Check the power supply cable (no loss of phase).

• Check the current absorbed by the motor.

• Check the operation of the controller cooling fan.

• Check the ambient temperature of the controller.

• Check the motor load (friction, etc.).

• Check the motor cable and insulation.

• Check the input voltages and phase balance.

• Check the output phase balance

• Change the motor

Solution