Table of Contents
Advertisement
i
_°
t_
o
o
START
Is LED status
on?
light
YES
_--_
Is there 115V at L1 and L2?
_
Is door switch closed?
I Isthere24Vat SEC-1andSEC-2?
I--E-P-
I Is there 115V going to switch?
I Rap'ace furnace c°ntr°k
I
IRap'ace d°°r s witch
_ y
I Is LED status
light blinking
rapidly
without
a
pause?
,NO
I
Check for correct line voltage
polarity.
If units I
are twinned,
check for proper
low-voltage
I
(24V) transformer
phasing.
_
Replace
transformer.
Is LED status
light blinking
ON/OFF
slowly
with a combination
of short and long flashes?
I
"
YES
Determine
status code. The status code is a
2 digit number with the first digit determined
by the number of short flashes and the second
digit by the number
of long flashes?
I Go to section belowfor the status code that _
Was there a previous status code
was flashed.
_
other than #11?
To recall status code briefly remove
and reconnect
one RED wire from the draft
safeguard
switch to display
stored status code.
On RED LED control do not
remove
power
or blower
access
panel before initiating
status code recall.
You
can also recall the previous status code by momentarily
shorting the TESTfTWIN
terminal
to Com24V
terminal
until the LED goes out.
LED will flash the status
code of the previous fault or status code #11 (1 short and 1 long flash) if there
was no previous
fault. After the control repeats
the code 4 times, the control
will go through
a brief component
test sequence.
The inducer
will start and run
for the entire component
test. The HSl, blower motor FAN speed (AMBER
LED
boards only) HEAT speed, and COOL speed
will run for 10
15 seconds
each.
Gas valve and humidifier
will not be turned
on.
Does the control respond to W, Y1 (if present),
Y!Y2, and G (24V)
thermostat
signals?
V
YES
Run system through a heating or cooling cycle
to check operation.
Status codes are erased
after 72 hours.
On RED LED boards
stored
status codes can also be erased whenever
115V or 24V
is interrupted.
I Replace
furnace
control.
_._
Is door switch closed?
_-_
Is circuit breaker
closed?
I_
l
YES
I
I check f°r c°ntinuily
in wire fr°m circuit breaker
Itofurnace.
I
I Close circuit breaker
and go back to START. I_-
I
heck room thermostat
or
interconnecting
cable.
' NO
Is 2 4v p resentatW,
l/if p resent), orI
G thermostat
terminals
on the furnace
control?
_
YES
I Disconnect
all the thermostat
wires from the
I
furnace
control.
I
l
I_._[
oes the problem
repeat when using
a jumper
wire?
,NO
The thermostat
is not compatible
with the
furnace
control.
Either install a ballast resistor,
connect
the Com24V
thermostat
terminal
to
the thermostat,
or replace
the thermostat.
NO
Hide quick links:
Advertisement
Table of Contents
