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-)
Blown
fuse or power
removed.
Notes: Fault
light
will
flash
if
either
forced air
or
hydronic
mode is
locked out,
and stay
Lt
solid
if
both modes
are
locked out.
When unit
is
running
in
forced
air
mode,
F/A
1
indicator
is
lit.
When unit
is
running
is
hydronic
mode,
HYD
indicator is
lit.
Table
8
-
Controller
#20-2000
LED
Indicator Chart
I
f
x
x
ASC indicator
on
for 4'
35'
on
power
initialization.
x
Power
applied
-
unit running
or
waiting for
a
call to
run.
ASC indicator ON for
30
to
60 seconds after compressor
shutdown.
x
x
x
x
x
lndicates LP switch position (ON =
open).
x
Lockout, indicators
latched and resettable by
removing
power.
x
x
x
x
x
Indicates
LP switch position (ON
= open).
x
x
x
LP
delayed
5
seconds on
initial
cail,
then
ASC
and
LP
indicator ON
while
switch
is open.
Indicates
LP switch position (ON =
open).
x
x
x
Lockout, indicators
latched and resettable
by removing
power
x
x
x
x
Indicates HP switch position (ON =
open).
x
x
x
x
x
x
x
Lockout, indicators
latched and resettable by
removing
power.
x
x
x
Indicates
HP
switch position (ON
= open).
x
Lockout, indicators
latched and resettable by
removing
power.
x
x
x
x
x
Indicates HP switch position (ON =
open).
x
x
x
x
x
Lockout, indicators
latched and resettable
by removing
power.
x
Indicates FP
switch position (ON
= open).
x
X
x
x
x
Lockout, indicators
latched and resettable by
removing
power.
x
x
FP
switch
disabled
in
cooling
mode.
x
x
Indicates FP
switch position (ON =
open).
x
x
x
x
x
Lockout, indicators
latched and resettable by
removing
power.
x
x
Indicator ON while
water present on sensor
(optional).
x
x
Indicator ON while
water present
on
sensor
(optional).
x
x
x
Indicator ON while
water present on sensor,
ASC period
with cail for F/A cooling only (optional).
x
x
lndicator ON while
water present
on
sensor
(optional).
26
**g
=*:
=:
ffi:e====
:rrx
.:39:
AC power applied
Run
cycle complete
LP
(F/A
heating
-
beforc call)
LP
(F/A
heating
-
after
call)
LP
(F/A cooling
- befbre
call)
LP
@A
cooling -
after
call)
LP
(l{YD
heating - before
call)
LP
QIYD
heating
- after call)
HP
S/A
heating
-
before
call)
HP
(F/A heating -
after
cail)
HP (F/A cooling
-
before call)
HP (F/A cooling -
after
call)
HP
GryD
heating
-
betbre
call)
HP
(HYD
heating -
after
cal])
FP
(F/A heating
-
before call)
FP
(F/A heating
-
alter call)
FP
(F/A
cooling)
FP
(HYD
heating
- before
call)
FP
(FIYD heating -
after
call)
Condeasate
Overflow
Detector
@/A heating)
Condensale
overtlow
l)etector
(F/A cooling
- before
call)
Condensate
Overflow Detector
(F/A cooling
- after
call)
Condensate
Overflow Detector
(}{YD
heating)
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