
40
FAULT
DESCRIPTION
LCD Digits Description
ACTION
Anomaly as parasitic
flame, APT failure
or APS failure
Desired
flame level
is shown
Yellow LED permanently OFF
Green and LED blink slowly and simultaneously
Turn off main power to the fireplace for 30 minutes.
Ignition Lockout
“A1”
Yellow LED permanently OFF
Red LED permanently ON
Green LED performs 1 blink followed by a 1s
pause
Check for gas presence. Reset and retry ignition
sequence. If problem persists, contact a qualified
service person
High water level
fault
“A2”
Yellow LED permanently OFF
Red LED permanently ON
Green LED performs 2 blinks followed by a 1s
pause
Contact a qualified service person
Transducer fault
“A3”
Yellow LED permanently OFF
Red LED permanently ON
Green LED performs 3 blinks followed by a 1s
pause
Check air pressure switch and air pressure
transducer hose connections. Reset fireplace and try
ignition. If problem persists, contact a qualified
service person
Pressure switch fault
“A4”
Yellow LED permanently OFF
Red LED permanently ON
Green LED performs 4 blinks followed by a 1s
pause
Check air pressure switch and air pressure
transducer hose connections. Reset fireplace and try
ignition. If problem persists, contact a qualified
service person
Overheat lock-out
“A5”
Yellow LED permanently OFF
Red LED permanently ON
Green LED performs 5 blinks followed by a 1s
pause
Allow fireplace to cool completely then reset
fireplace. If problem persists, contact a qualified
service person
Thermistor fault
“A6”
Yellow LED permanently OFF
Red LED permanently ON
Green LED performs 6 blinks followed by a 1s
pause
Contact a qualified service person
Inadequate Combus-
tion Airflow
“A7”
Yellow LED permanently OFF
Red LED permanently ON
Green LED performs 7 blinks followed by a 3s
pause
Contact a qualified service person
Thermistor temp too
high
“A0”
Yellow LED permanently OFF
Red LED permanently ON
Green LED performs 1 blink followed by a 3s
pause
Allow fireplace to cool completely then reset
fireplace. If problem persists, contact a qualified
service person
TROUBLESHOOTING LCD FAULT CODES ON THE DISPLAY PANEL
Operation
LCG DIGITS
CONTROL BOARD LED SEQUENCE
Power on
sequence
Blank
Yellow LED permanently OFF
Green and Red LED blink four times alternatively
Standby
“—”
Yellow LED permanently OFF
Red LED permanently OFF
Green LED blink slowly and continuously
Operation Safety
Check
Desired flame level is shown
Yellow LED on at pressure threshold check
Green and red LED’s blink rapidly and alternately
Heat Request
Desired flame level is shown
Yellow LED permanently OFF
Red LED permanently OFF
Green LED blinking fast and continuously
TROUBLESHOOTING LCD CODES—NORMAL OPERATION
Summary of Contents for Archer IS720G
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