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Idiomas disponibles
Display of concentration and control
*If CO
/ PM2.5 sensor (Multi function sensor) is connected to a heat
2
recovery ventilation unit, each concentration is displayed on the remote
controller as shown in the figure on the right.
*The display of the CO
concentration and PM2.5 concentration on the
2
remote controller can be hidden with the DN settings. If you want to
change, contact your supplier (dealer).
*If the concentration is hidden, in the event of a sensor failure, the CO
concentration "- - ppm", PM2.5 concentration "- - μg/m
displayed.
*The display range of the concentration is as follows: CO
3
ppm, PM2.5: 0 - 999 μg/m
.
*If you select the fan speed "Auto", The fan speed is changed automatically in 7 stages according to the CO
concentration and PM2.5 concentration.
*The target concentration of the factory default is as follows: CO
change the target concentration, contact your supplier (dealer).
*The automatic fan speed control according to the CO
individually. When both controls are enabled, the heat recovery ventilation unit will run at a fan speed close to the
target concentration (higher of the concentrations). If you want to select the control either CO
concentration, contact your supplier (dealer).
*As a general guideline, the CO
concentration should be 1000 ppm or less.
2
(REHVA(Federation of European Heating Ventilation and Air Conditioning Associations))
*As a general guideline, the PM2.5 concentration (daily average) should be 70 μ g/m
(Ministry of Environment of China)
Sensor malfunction
*CO
concentration display is "- - ppm" while the heat recovery ventilation
2
unit is running, the concentration may be abnormal or the sensor may be
possible to malfunction.
*PM2.5 concentration display is "- - ppm", the sensor may be possible to
malfunction.
*In addition, if the check code [E30] [J04] [J05] flash on the display of the
remote controller, CO
/ PM2.5 sensor may be possible to malfunction. In
2
the above case, contact your supplier (dealer).
*In the event of this CO
/ PM2.5 sensor failure, the heat recovery
2
ventilation unit will keep operating.
103-EN
2
3
" will also not be
: 300 - 5000
2
3
: 1000 ppm, PM2.5: 70 μg/m
. If you want to
2
concentration or PM2.5 concentration can be selected
2
or PM2.5
2
3
or less.
11
Before calling for service
Check the points described below before asking for repair servicing.
Symptom
Operation does not start after pressing
the button.
The unit runs though the operation lamp
does not turn on.
2
The unit starts running without any
operation of the remote controller.
– 52 –
Cause
• Is the circuit breaker turned off?
• Has a power failure occurred?
• Does the "
" indicator light up?
(The ventilation delay setting is set to "ON" and it is not malfunction. The Heat
recovery ventilation unit will start running after the time set has passed. Consult
your dealer for details.)
Does the "
" or "
" indicator appear on the display?
The nighttime heat purge operation or 24-hour ventilation is set to "ON".
Refer to "Functions" for details. Consult your dealer to change the setting to
"OFF".
Has the unit just recovered from a power failure or have you just turned on the
circuit breaker?
(The settings concerning recovering from power failure are set to "ON". Consult
your dealer for details.
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