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Symptom 1
A fault is displayed on the remote
control
The remote control screen
(depending on version) is
switched on
The remote control screen
(depending on version) is
switched off
The fan unit will not start
Version without remote
control
The fan unit starts and then stops
Low speed
The fan does not run at the
selected set-point
High speed
The speed does not change
when the set point is
changed
The fan rotates in the wrong
direction
The micro-watt+ and constant
flow rate modes are no longer
available (micro-watt+ version)
N°
E.50
Motor speed return = 0 rpm
E.51
Motor speed return < 100 rpm
Fan does not reach minimum pressure set point
E.52
E.53
Incoherent pressure reading (too high)
E.88
Communications fault involving remote control
E.251
Operating in Fire Mode, thermo-contact circuit open
All these error numbers disappear when the fault is resolved and reset (See 6.4).
In the event of a problem, you may carry out a total system reset (Reset: See 6.4) and if the problem persists, contact our After
Sales Service Dept.).
Symptom 2
- See error code table below
- Check all wiring
- Check the motor: must be supplied directly with 230V~. Activate the motor run
control
- Check all wiring.
- Check fuse on Control PCB
- Check all wiring
- Check capacitor (depending on version)
- Check speed controller fuse
- Check voltage at the output of the speed controller (depending on version)
- Check the motor: 230V AC direct supply. In addition, for EC motors (EasyVEC
Compact 2000): activate the motor run control
- Check all wiring.
"Check that the impeller is not rubbing against the casing
- Check the capacitor (depending on version).
- Adjust the speed controller (depending on version).
- Check the output voltage from the speed controller or Control PCB (depending
on version).
- Check the functioning of the pressure sensor(s) (depending on version,
simulating a slight over or under pressure in the pressure tubes.
- Check the motor: Directly from 230V AC supply In addition, for EC motors
(EasyVEC
Compact 2000 & micro-watt/micro-watt + versions): activate the
®
motor run control (contact Technical Support)"
- Check the fire mode thermo-trip device and wiring (depending on version)
- Check the condition, position and connectivity of pressure tubes (depending on
version), unblock if necessary.
- Check the above points (low speed).
- Inspect the aeraulic network looking for leaks.
- Check the above points (high speed - low speed)
- Check the wiring in the motor terminal unit (EasyVEC® 1000 to 2500)
- Check the wiring on the additional pressure sensor (micro-watt+ version)
Meaning
Verifications
Diagnostics/Solutions
Motor disconnected or fan stuck or motor U/S
Fan is rubbing or motor is U/S
Check full system (network load and loss through leakage)
Check the state and connectivity of capillaries, unblock if necessary.
Constant pressure: 80 Pa.
Self-balanced regulated pressure: 50 Pa
Humidity-controlled regulated pressure: 80 Pa
T-Flow regulated pressure: 110 Pa
Expert regulated pressure: 50 Pa
Constant airflow: NA
Control 0-10 V: NA
Pressure sensor U/S
Remote control U/S
Thermocontact circuit or thermocontact U/S
23
Action
Replace the faulty part: Control PCB
or motor
Replace the fault part: remote
control or Control PCB.
Replace the faulty part: fuse,
capacitor, speed controller or motor
®
Replace the faulty part: capacitor,
additional pressure sensor (micro-
watt + version), speed controller,
electronic control PCB or motor
Replace the faulty part: thermo-trip
device (triggering fire mode). See
above (low speed)
- See A45 above (high speed - low
speed)
Change the additional pressure
sensor (micro-watt+ version)
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