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| EN
RIS PE 3.0 v2020.1
10. POSSIBLE FAULTS AND TROUBLESHOOTING
FAILURE
CAUSE
EXPLANATION / CORRECTIVE ACTIONS
Unit is not operating
No supply voltage
Check whether the device is connected to the
power network
Protection device is off or a current
leakage relay is active (if installed by the
installer)
Switch on only if the unit condition has been
evaluated by a qualified electrician. If the sys
-
tem failed, the failure MUST BE rectified prior
to switching it on.
Air supply heater or pre-heater is not operat-
ing or malfunctioning (if installed)
Too low air flow in air ducts activates auto
-
matic
protection
Check if air filters are not clogged
Check if fans are rotating
Manual protection is activated
Possible heater or unit failure. MUST contact
the servicing staff for failure detection and its
elimination.
Too low air flow at rated fan speed
Clogged supply and/or extract air filter(s)
Filter replacement needed
Filters are clogged and no message is shown
on the remote control
Wrong time in filter timers or their switch is
broken, or its pressure is set improperly.
Shorten filter timer time till the message of
clogged filters or replace the pressure switch
of the filters, or set their proper pressure.
Summary of Contents for RIS 1000 PE 3.0
Page 1: ...RIS PE 3 0 EN MOUNTING AND INSTALLATION INSTRUCTION...
Page 30: ...30 RIS PE 3 0 v2020 1...
Page 31: ...31 RIS PE 3 0 v2020 1...
