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Operating instructions
CHAPTER 3
FAULT/ERROR
Faults
Information
Infos
Info 1
Filter change
Info 2
Frost protection Heat exchanger
Info 3
SD card error
Info 4
Failure of an external module
Error reports
Speed error "Supply air" fan (outside air)
Error 1
Speed error "Extract air" fan (outgoing air)
Error 2
Error 3
-free-
Error 4
SD card error when writing
Error 5
Bus overcurrent
Error 6
-free-
Error 7
BASIS VHZ EH voltage to heat module not available
Error 8
Ext. module (VHZ) mains voltage to KWL-EM unavailable
Error 9
Ext. module (NHZ) mains voltage to KWL-EM unavailable
Error 10
BASIS Int. temp sensor (T1) -outside air- (missing or cable break)
Error 11
BASIS Int. temp sensor (T2) -supply air- (missing or cable break)
Error 12
BASIS Int. temp sensor (T3) -extract air- (missing or cable break)
Error 13
BASIS Int. temp sensor (T4) -outgoing air- (missing or cable break)
Error 14
BASIS Int. temp sensor (T1) -outside air- (short-circuit)
Error 15
BASIS Int. temp sensor (T2) -supply air- (short-circuit)
Error 16
BASIS Int. temp sensor (T3) -extract air- (short-circuit)
Error 17
BASIS Int. temp sensor (T4) -outgoing air- (short-circuit)
Error 18
Ext. module configured as VHZ but not available or malfunction
Error 19
Ext. module configured as NHZ but not available or malfunction
Error 20
Ext. module (VHZ) duct sensor (T5) -outside air- (missing or cable break)
Error 21
Ext. module (NHZ) duct sensor (T6) -supply air- (missing or cable break)
Ext. module (VHZ) duct sensor (T7) –return WW register- (missing or
Error 22
cable break)
Error 23
Ext. module (VHZ) duct sensor (T5) -outside air- (short-circuit)
Error 24
Ext. module (NHZ) duct sensor (T6) -supply air- (short-circuit)
Ext. module (VHZ) duct sensor (T7) –return WW register- (short-circuit)
Error 25
Error 26
Ext. module (VHZ) safety limiter automatically triggered
Error 27
Ext. module (VHZ) safety limiter manually triggered
Error 28
Ext. module (NHZ) safety limiter automatically triggered
Error 29
Ext. module (NHZ) safety limiter manually triggered
Error 30
Ext. module (NHZ) Frost protection measured by WW return (T7)
(switching threshold adjustable e.g. < 7 °C)
Error 31
Ext. module (NHZ) Frost protection measured by supply air sensor (T6)
(switching threshold adjustable e.g. < 7 °C)
Error 32
Frost protection external WW reg (fixed < 7 °C only PHI) measured either
by (1.) Ext. module (NHZ) supply air duct sensor (T6)
by (2.) BASIS supply air duct sensor (T2)
Comfort controller KWL-BEC
3.0
KWL-BEC fault overview
Cause
Filter dirty
Cold outside temperature
SD card inserted incorrectly /
defective
Cable break,
programmed but unavailable
Target speed is not reached in
terms of ventilation
Software error
Cable break
Motor/impeller defective
Like "Error 1" (see above)
-
Internal error
Too many subscribers connected to
bus
-
Electronic error
EM module pre-heater with no
power
EM module auxiliary heater with no
power
Temperature sensor not sending
signal to circuit board
Temperature sensor not sending
signal to circuit board
Temperature sensor not sending
signal to circuit board
Temperature sensor not sending
signal to circuit board
Short-circuit in sensor cable
Short-circuit in sensor cable
Short-circuit in sensor cable
Short-circuit in sensor cable
Pre-heater
programmed,
corresponding
EM
module
connected
Auxiliary heater programmed, but
corresponding
EM
module
connected
Temperature sensor not sending
signal to circuit board
Temperature sensor not sending
signal to circuit board
Temperature sensor not sending
signal to circuit board
Short-circuit in sensor cable
Short-circuit in sensor cable
Short-circuit in sensor cable
Pre-heater coil has overheated!
Bridge not connected or missing
Pre-heater coil has overheated!
Bridge not connected or missing
Pre-heater coil has overheated!
Bridge not connected or missing
Pre-heater coil has overheated!
Bridge not connected or missing
Return temperature too low
Return temperature too low
Return temperature too low
27
Solution
Change filter
for info, turns off automatically in warmer
temperatures
Have SD card tested by specialist
Have programming and connection to
KWL-EM tested by specialist
Check air ducts for obstructions (dirty
grille/filter, incorrectly installed valves,...)
Reset (electricity off/on)
Connect cable correctly
Replace motor/impeller unit
Like "Error 1" (see above)
-
Reset (electricity off/on)
-
Reset (electricity off/on)
Connect/switch on power
Connect/switch on power
Connect temperature sensor correctly
Connect temperature sensor correctly
Connect temperature sensor correctly
Connect temperature sensor correctly
Connect temperature sensor correctly
Connect temperature sensor correctly
Connect temperature sensor correctly
Connect temperature sensor correctly
but
Reprogramme pre-heater or configure
not
KWL-EM as pre-heater
Reprogramme
auxiliary
not
configure KWL-EM as pre-heater
Connect temperature sensor correctly
Connect temperature sensor correctly
Connect temperature sensor correctly
Connect temperature sensor correctly
Connect temperature sensor correctly
Connect temperature sensor correctly
System automatically resets itself after
cooling
Find cause of overheating
(volume flow too low,..)
Reset (electricity off/on)
Find cause of overheating
(volume flow too low,..)
Auto. system reset after cooling
Find cause of overheating
(volume flow too low,..)
Reset (electricity off/on)
Find cause of overheating
(volume flow too low,..)
Check flow temperature, increase if
necessary, outside temperature too cold
Check flow temperature, increase if
necessary, outside temperature too cold
Check flow temperature, increase if
necessary, outside temperature too cold
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heater
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