Diagnostics
Installation, use and maintenance manual – GAHP-AR
39
8
8
DIA
GNOSTICS
8.1
OPER
ATIVE
C
ODES
Table 8.1
O
per
ativ
e c
odes
Code
Cooling
Hea
ting
Description
W
arning
Err
or
Possible c
auses / C
hecks
601
X
X
Gener
at
or side
w
all limit swit
ch open on
absor
ption units - or - hot w
at
er limit open
on GAHP and A
Y-119 models
W
ar
ning will r
eset aut
oma
tically but gener
at
or
side
w
all limit must be manually r
eset
Er
ror can be r
eset via S61, DDC or
po
w
er off but gener
at
or side
w
all
limit must be manually r
eset
Hy
dr
aulic P
ump malfunc
tion or h
ydr
aulic pump lo
w on oil
Fault
y limit swit
ch
If the pr
oblem persists
, c
on
tac
t A
T
602
X
Exhaust limit open
W
ar
ning will r
eset aut
oma
tically when t
empe
-
ra
tur
e dr
ops b
y 14 °F
Er
ror can be r
eset via S61, DDC or
po
w
er off
Hy
dr
aulic P
ump malfunc
tion or h
ydr
aulic pump lo
w on oil
Fault
y limit swit
ch
If the pr
oblem persists
, c
on
tac
t A
T
603
X
Cold w
at
er saf
et
y limit w
ar
ning
W
ar
ning will r
eset aut
oma
tically when t
empe
-
ra
tur
e incr
eases b
y 3,6 °F abo
ve limit
NA
Ligh
t load c
onditions
Lo
w w
at
er flo
w
If the pr
oblem persists
, c
on
tac
t A
T
604
X
Condenser / absor
ber c
oil o
ver
hea
ting
W
ar
ning will r
eset aut
oma
tically af
ter 20
minut
es
Er
ror can be r
eset via S61, DDC or
po
w
er off
Dir
ty c
ondenser / absor
ber c
oil
Condenser t
emper
atur
e sensor (
TCN) or ambien
t t
emper
atur
e sensor (
TA
) not
sensing c
or
rec
t t
emper
atur
es
Fan mot
or - C
apacit
or
If the pr
oblem persists
, c
on
tac
t A
T
605
X
X
High ambien
t t
emper
atur
e
NA
Er
ror will aut
oma
tically r
eset af
ter
condition is c
or
rec
ted
Check loca
tion of the unit and pr
obe
606
X
X
Lo
w ambien
t t
emper
atur
e
W
ar
ning will aut
oma
tically r
eset af
ter c
ondition
is c
or
rec
ted
NA
Check loca
tion of the unit and pr
obe
607
X
X
High c
ondenser inlet t
emper
atur
e
W
ar
ning will r
eset aut
oma
tically when t
empe
-
ra
tur
e dr
ops t
o 149 °F
Er
ror can be r
eset via S61, DDC or
po
w
er off
Hy
dr
aulic P
ump malfunc
tion or h
ydr
aulic pump lo
w on oil
Check gener
at
or (
TG) t
emp pr
obe c
onnec
tion t
o pipe
If the pr
oblem persists
, c
on
tac
t A
T
608
X
X
Flame c
on
troller er
ror
NA
Er
ror can be r
eset via S61, DDC or
po
w
er off
Check gener
at
or (
TG) t
emp pr
obe c
onnec
tion t
o pipe
Check wir
e c
onnec
tions t
o S61 fr
om F
en
w
al
610
X
X
Inadequa
te w
at
er cir
cula
tion
W
at
er flo
w swit
ch open dur
ing expec
ted
oper
ation
W
ar
ning will aut
oma
tically r
eset when w
at
er
flo
w swit
ch closes f
or 5 sec
onds and outlet
w
at
er t
emp is g
rea
ter than c
old w
at
er saf
et
y
limit or if no w
at
er flo
w is r
equir
ed b
y unit
Er
ror can be r
eset via S61, DDC or
po
w
er off
No or lo
w w
at
er flo
w
W
at
er flo
w swit
ch bad or possibly stuck open
Check Δp - F
lo
w swit
ch oper
ation
611
X
X
Reed sensor not det
ec
ting r
ota
tion of
hy
dr
aulic pump pulle
y
W
ar
ning will r
eset aut
oma
tically af
ter 20
minut
es
Er
ror can be r
eset via S61, DDC or
po
w
er off
Pump mot
or malfunc
tion
Br
oken, str
et
ched or w
or
n belt(s)
W
or
n pulle
ys
M
ag
net on back of bott
om pulle
y possibly ejec
ted
If the pr
oblem persists
, c
on
tac
t A
T
612
X
X
Ig
nition malfunc
tion / ig
nition lockout
W
ar
ning will aut
oma
tically r
eset upon ne
w
ig
nition a
ttempt
Er
ror can be r
eset via S61, DDC or
po
w
er off
Bad ig
nit
or or flame sensor
Bad ig
nition tr
ansf
or
mer
Fen
w
al malfunc
tion
Inc
or
rec
t gas pr
essur
e t
o bur
ner
Block
age of gas or
ific
e
Bad 3.15 amp fuse on main c
on
trol boar
d
If the pr
oblem persists
, c
on
tac
t A
T
Summary of Contents for GAHP-AR
Page 43: ......
