
Air 70 Rev. D
17
When the appliance's control system detects a fault, that is in-
dicated by one or several blinking red LEDs.
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cleaned or replaced; see §8.1.
The appliance makes a distinction between a fault at which the
appliance keeps running (limitedly) and a serious (locking) fault
for which the fan is switched off.
The appliance remains in this fault mode until the problem in
question has been solved. then the appliance will reset itself
(Auto reset).
Non-locking fault
When the appliance detects a non-locking fault, it will still keep
running (limitedly).
Locking fault
When the appliance detects a locking fault, it will no longer
work. The red LED on the multiple switch (if applicable) will
be blinking. Contact the installer to remedy this fault. A locking
fault cannot be remedied by taking the voltage from the appli-
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Chapter 7 Faults
7.1 Trouble shooting
Fault code
(blinking
red LEDs)
Cause
Action appliance
Action installer
Fan
(locking fault)
Fan is switched off
Preheater is switched off
If applicable, the Bypass is shut
off and blocked
Restart every 5 minutes
Take the voltage from the appliance
Check the fan wiring
Replace wiring or fan
Put voltage back on appliance
Fault has automatically been reset
Bypass
Appliance keeps running
Bypass is blocked
Take the voltage from the appliance
Check heat exchanger with bypass
valve & bypass motor
Replace heat exchanger with by-
pass valve & bypass motor
Put voltage back on appliance
Fault has automatically been reset
Temperature sensor from
atmosphere
(locking fault)
Fan is switched off
Preheater is switched off
If applicable, the Bypass is shut
off and blocked
Take the voltage from the appliance
Check sensor wiring
Replace wiring or sensor
Put voltage back on appliance
Fault has automatically been reset
Temperature sensor from
dwelling
If applicable, the Bypass is shut
off and blocked
Take the voltage from the appliance
Check sensor wiring
Replace wiring or sensor
Put voltage back on appliance
Fault has automatically been reset
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Содержание Air 70
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