57
Troubleshooting
Code Meaning/effect
Cause/remedy
AL 156
No negative pressure in the
combustion chamber
No neggativ pressure in combustion
chamber or sensor defective. Press
Reset.
The boiler switches to burnout mode.
a) Heating surface cover leaking, check whether this is firmly closed (see sec-
tion 3.8), press the Reset button.
b) Combustion chamber and ash door are leaking – check the seal, replace
the seal if necessary, press the reset button.
c) Pressure measuring nipple of combustion chamber pressure switch is blok-
ked – clear it (see section 3.9.1), press the reset button.
d) Intake air line or induction opening at rear is blocked – clear it and press
the reset button.
e) Exhaust pipe or flue is blocked, clear it and press the reset button.
f) Combustion chamber pressure switch is defective, inform Windhager
Customer Service or a heating technician.
AL 171
Maximum heating up time
exceeded
Clean the burner pot. Press Reset.
a) FireWIN Klassik without feed: The reserve supply container is empty.
Fill fuel into the fuel container (see section 2.3). Press the Reset button until
the boiler starts operating again. The alarm message AL 171 may light on
up to 2 occasions, press the Reset button.
b) Clean the burner pot (see section 3.6), empty the ash pan in Klassik/Pre-
mium, press the reset button.
c) Too much dust in the reserve supply container – bridge formation, remo-
ve the dust (see section 3.7), press the Reset button.
d) Auger conveyor or rotary feeder jammed due to a foreign body, clean the
reserve supply container or rotary feeder (see section 3.7) and remove the
foreign body, refill the reserve supply container. The alarm message AL 171
may light on up to 2 occasions until the boiler starts operating again, press
the Reset button.
e) FireWIN Premium/Exklusiv with feed: Pellets stuck in the hose before the
entry to the reserve supply container – move the hoses at the connection
pieces, press the Reset button.
f) Ignition defective, inform Windhager Customer Service or a heating tech-
nician.
AL 187
No communication with
main PCB
Check connection for main PCB and
connections. Press Reset.
The boiler switches to burnout mode.
a) Check the connection cable or InfoWIN plug connection to the main PCB,
inform Windhager Customer Service or a heating technician.
b) Connect the main PCB, inform Windhager Customer Service or a heating
technician.
AL 188
Internal error occurred
ErrorCode 188
Current TablelD 4
Internal communication error. The boiler switches to burnout mode.
A reset is performed automatically after 1 minute if this error occurs.
If the malfunction occurs after a short period, or recurs at regular intervals,
contact Windhager Customer Service or your heating technician.
