Robur GAHP-AR, Installation, Use And Maintenance Manual

Page: 42 / 44

Diagnostics
42
8
Code
Cooling
Hea
ting
Description
W
arning
Err
or
Possible c
auses / C
hecks
683
X
X
Simultaneous ac
tiv
ation of R
Y and R
W
con
tac
ts on 2-pipe chiller/hea
ters
The w
ar
ning is aut
oma
tically r
eset when either
the R
Y or R
W c
on
tac
ts open, allo
wing f
or a
single c
on
tac
t
NA
Bad 2 amp fuse Bad c
onnec
tion bet
w
een tr
ansf
or
mer and lo
w v
oltage c
onnec
tion t
o boar
d
Fault
y tr
ansf
or
mer
If the pr
oblem persists
, c
on
tac
t A
T
684
X
X
Fault
y lo
w v
oltage
NA
Er
ror can be r
eset via S61, DDC or
po
w
er off
Bad 2 amp fuse Bad c
onnec
tion bet
w
een tr
ansf
or
mer and lo
w v
oltage c
onnec
tion t
o boar
d
Fault
y tr
ansf
or
mer
If the pr
oblem persists
, c
on
tac
t A
T
685
X
X
Inc
or
rec
t unit t
ypes
NA
Er
ror can be r
eset via po
w
er off
Ne
w par
amet
er setting is r
equir
ed
If the pr
oblem persists
, c
on
tac
t A
T
686
X
X
Elec
tronic boar
d fault
NA
Er
ror can be r
eset via po
w
er off
If the pr
oblem persists
, c
on
tac
t A
T
687 688 689 690
X
X
Ambien
t t
emper
atur
e sensor fault (
TA
)
NA
Er
ror can be r
eset via S61, DDC or
po
w
er off
Br
oken or shor
t in sensor wir
e
Possible bad c
onnec
tion a
t c
on
trol boar
d
If the pr
oblem persists
, c
on
tac
t A
T
691
X
X
Elec
tronic boar
d fault
NA
Er
ror can be r
eset via po
w
er off
If the pr
oblem persists
, c
on
tac
t A
T
NA: Not Applicable