nilan Comfort CT150 Installation Instructions Manual page 43

Alarm code Category
18 I
19 I
21 I
22 I
71 W
91 I
92
Display text Description/cause
Part of the program setup lost.
Can be due to long-term power
SET outage or lightning strike.
The unit will continue to run on
standard setup
Filter sensor set for X days for
check/replacement of filter (30,
FILTER
90, 180, 360 days). Standard
setup is 90 days
Occurs in the event of power
SET TIME
outage
Target heating of intake air not
possible (only applies if comfort
T AIR heater fitted). Comfort heater and
unit cannot raise the temperature
to target.
Max. defrosting time exceeded for
counterflow exchanger. Can be
EXCH DEF
because the unit has been exposed
to low temperatures
OPT IO Option PCB missing
Error when entering or loading
PRESET
installer's settings
Comfort CT150 / CT200 (English)
Reset alarm.
Program week program as
required.
Contact service if the unit is
running unsatisfactorily or as
before, as any sub-programs can
be lost. (sub-programs are only
accessible by service)
Clean/replace filter.
Reset alarm.
Week timer settings must be
checked and set if required.
Reset alarm.
Set lower target intake
temperature.
Reset alarm.
Contact service if cancellation of
alarm does not help. Note current
operating temperatures from the
SHOW DATA menu as an aid to
service
Contact service
Contact service
BY NILAN
Fault correction
43