Owner`s manual

32084-3-0813 Page 37
TROUBLESHOOTING
TROUBLESHOOTING LCD CODES - NORMAL OPERATION
OPERATION LCD DIGITS CONTROL BOARD LED SEQUENCE
Power on sequence Blank
Yellow LED permanently OFF
Green and red LED blink four times alternately
Standby “ - -”
Yellow LED permanently OFF
Red LED permanently OFF
Green LED blinking slowly and continuously
Operation Safety Check Desired ame level is shown
Yellow LED on at pressure threshold check
Green and red LED’s blink rapidly and alternately
Heat Request Desired ame level is shown
Yellow LED permanently OFF
Red LED permanently OFF
Green LED blinking fast and continuously
Run Desired ame level is shown
Red LED permanently OFF
Green LED permanently ON
TROUBLESHOOTING LCD FAULT CODES ON THE DISPLAY PANEL
FAULT
DESCRIPTION
LCD Digits Description ACTION
Anomaly such as parasitic
ame, APT failure,
or APS failure
Desired
ame level
is shown
Yellow LED permanently OFF
Turn off main electrical power to
the wall furnace for 30 seconds then
retry ignition.
Green and red LED blink slowly and simultaneously
Ignition lock-out “A1”
Yellow LED permanently OFF
Check gas presence.
Check ame detection probe.
Check ignition probe.
Red LED permanently ON
Green LED performs one blink followed by a one second pause
High water level fault “A2”
Yellow LED permanently OFF
Check pump functionality.
Check that the drain tube is not clogged
or crimped.
Red LED permanently ON
Green LED performs two blinks followed by a one second pause
Transducer fault “A3”
Yellow LED permanently OFF
Check Air pressure sensor connection.
Check fan functionality.
Check for ue blockage.
Red LED permanently ON
Green LED performs two blinks followed by a one second pause
Pressure switch fault “A4”
Yellow LED permanently OFF
Check APS device.
Check fan functionality.
Check for ue blockage.
Red LED permanently ON
Green LED performs 4 blinks followed by a one second pause
Overheat lock-out “A5”
Yellow LED permanently OFF
Check circulating air blower
functionality.
Red LED permanently ON
Green LED performs 5 blinks followed by a one second pause
Inadequate
Combustion Airow
“A7”
Yellow LED permanently OFF
Check for ue restriction.
Red LED permanently ON
Green LED performs 7 blinks followed by a one second pause
Room temp too high “A8”
Yellow LED permanently OFF
Check thermostat functionality.Red LED permanently ON
Green LED performs 8 blinks followed by a one second pause
Room temp sensor failure “A9”
Yellow LED permanently OFF
Check temperature sensor
connection.
Red LED permanently ON
Green LED performs 9 blinks followed by a one second pause
To reset the wall furnace, press the mode selection button on the display panel repeatedly until the wall furnace cycles through the
“OFF” setting once. If the error has been cleared, the wall furnace will operate normally. If the error is still present, consult a qualied
service technician.