Readings on the display
Greenstar – 6721822579 (2021/01)
72
16 Readings on the display
The 7-segment display shows the following:
Table 34 Display readings
Table 35 Special displays
Value displayed Description Range
Number or letter, dot
followed by letter
Servicefunction
( Tab. 26/ 27,
page 56/ 56)
Letter followed by
number or letter
Fault code
(Tab. 36, page 74) (exception:
b.A = service function)
Three numbers
(≤ 199)
Decimal value, e.g. supply
temperature
00 ... 199
One number
(displayed for longer)
followed by two
numbers (displayed
briefly)
Decimal figure (three digits); first
digit is shown alternating with two
last digits (e.g. 2.69..69 for 269)
0 ... 999
Two dashes followed
by two pairs of
numbers
Code is shown in three stages:
1. Two dashes
2. First two digits
3. Last two digits (e.g. -- 10 04)
1000 ...
9999
Two letters followed
by two pairs of
numbers
Code is shown in three stages:
1. Two letters
2. First two CF 10 digits
3. Last two digits (e.g. 20)
Status
code
Description
Acknowledge by pressing any button (except reset).
Acknowledge by pressing two buttons
simultaneously
Acknowledge by pressing the button and holding
longer than 3 seconds (Save function).
The display shows the supply temperature in
alternation with . The appliance works for 15
minutes at the minimum nominal output,
service function 2.F.
The display shows the supply temperature in
alternation with . The appliance works with the set
maximum output in heating mode,
service function 1.A.
The display shows the supply temperature alternating
with . The appliance works for 15 minutes at the
maximum nominal output, service function 2.F.
The air purging function is active, service function 2.C
The display shows the supply temperature alternating
with . The trap filling sequence is active,
service function 4.F.
The display shows the supply temperature alternating
with : Service due, service function 5.A.
The display shows the supply temperature alternating
with . The pump has seized, fault E9.
The display shows the supply temperature alternating
with . The temperature gradient limiter was
triggered. Excessive supply temperature increase:
Heating mode is suspended for two minutes.
Slab drying function of the FW 200 outdoor reset
control ( operating instructions) or building drying
function ( service function 7.E) are activated.
Key pad lock enabled. To unlock the key pad, press
until the supply temperature is shown on the
display.
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